1092 lines
34 KiB
Go
1092 lines
34 KiB
Go
package wasm
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import (
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"math"
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"testing"
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"github.com/tetratelabs/wazero/api"
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"github.com/tetratelabs/wazero/internal/leb128"
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"github.com/tetratelabs/wazero/internal/testing/require"
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)
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// Test_ElementInitNullReference_valid ensures it is actually safe to use ElementInitNullReference
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// as a null reference, and it won't collide with the actual function Index.
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func Test_ElementInitNullReference_valid(t *testing.T) {
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require.True(t, MaximumFunctionIndex < ElementInitNullReference)
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}
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func Test_resolveImports_table(t *testing.T) {
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const moduleName = "test"
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const name = "target"
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t.Run("ok", func(t *testing.T) {
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max := uint32(10)
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tableInst := &TableInstance{Max: &max}
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s := newStore()
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s.nameToModule[moduleName] = &ModuleInstance{
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Tables: []*TableInstance{tableInst},
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Exports: map[string]*Export{name: {Type: ExternTypeTable, Index: 0}},
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ModuleName: moduleName,
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}
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m := &ModuleInstance{Tables: make([]*TableInstance, 1), s: s}
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err := m.resolveImports(&Module{
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ImportPerModule: map[string][]*Import{
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moduleName: {{Module: moduleName, Name: name, Type: ExternTypeTable, DescTable: Table{Max: &max}}},
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},
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})
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require.NoError(t, err)
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require.Equal(t, m.Tables[0], tableInst)
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})
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t.Run("minimum size mismatch", func(t *testing.T) {
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s := newStore()
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importTableType := Table{Min: 2}
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s.nameToModule[moduleName] = &ModuleInstance{
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Tables: []*TableInstance{{Min: importTableType.Min - 1}},
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Exports: map[string]*Export{name: {Type: ExternTypeTable}},
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ModuleName: moduleName,
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}
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m := &ModuleInstance{Tables: make([]*TableInstance, 1), s: s}
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err := m.resolveImports(&Module{
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ImportPerModule: map[string][]*Import{
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moduleName: {{Module: moduleName, Name: name, Type: ExternTypeTable, DescTable: importTableType}},
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},
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})
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require.EqualError(t, err, "import table[test.target]: minimum size mismatch: 2 > 1")
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})
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t.Run("maximum size mismatch", func(t *testing.T) {
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max := uint32(10)
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importTableType := Table{Max: &max}
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s := newStore()
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s.nameToModule[moduleName] = &ModuleInstance{
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Tables: []*TableInstance{{Min: importTableType.Min - 1}},
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Exports: map[string]*Export{name: {Type: ExternTypeTable}},
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ModuleName: moduleName,
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}
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m := &ModuleInstance{Tables: make([]*TableInstance, 1), s: s}
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err := m.resolveImports(&Module{
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ImportPerModule: map[string][]*Import{
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moduleName: {{Module: moduleName, Name: name, Type: ExternTypeTable, DescTable: importTableType}},
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},
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})
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require.EqualError(t, err, "import table[test.target]: maximum size mismatch: 10, but actual has no max")
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})
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t.Run("type mismatch", func(t *testing.T) {
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s := newStore()
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s.nameToModule[moduleName] = &ModuleInstance{
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Tables: []*TableInstance{{Type: RefTypeFuncref}},
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Exports: map[string]*Export{name: {Type: ExternTypeTable}},
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ModuleName: moduleName,
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}
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m := &ModuleInstance{Tables: make([]*TableInstance, 1), s: s}
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err := m.resolveImports(&Module{
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ImportPerModule: map[string][]*Import{
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moduleName: {{Module: moduleName, Name: name, Type: ExternTypeTable, DescTable: Table{Type: RefTypeExternref}}},
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},
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})
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require.EqualError(t, err, "import table[test.target]: table type mismatch: externref != funcref")
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})
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}
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var codeEnd = Code{Body: []byte{OpcodeEnd}}
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func TestModule_validateTable(t *testing.T) {
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const maxTableIndex = 5
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three := uint32(3)
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tests := []struct {
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name string
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input *Module
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}{
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{
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name: "empty",
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input: &Module{},
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},
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{
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name: "min zero",
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input: &Module{TableSection: []Table{{}}},
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},
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{
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name: "maximum number of tables",
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input: &Module{TableSection: []Table{{}, {}, {}, {}, {}}},
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},
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{
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name: "min/max",
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input: &Module{TableSection: []Table{{Min: 1, Max: &three}}},
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},
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{ // See: https://github.com/WebAssembly/spec/issues/1427
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name: "constant derived element offset=0 and no index",
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input: &Module{
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TypeSection: []FunctionType{{}},
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TableSection: []Table{{Min: 1, Type: RefTypeFuncref}},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const0},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "constant derived element offset=0 and one index",
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input: &Module{
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TypeSection: []FunctionType{{}},
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TableSection: []Table{{Min: 1, Type: RefTypeFuncref}},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const0},
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Init: []Index{0},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "constant derived element offset - ignores min on imported table",
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input: &Module{
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ImportTableCount: 1,
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{{Type: ExternTypeTable, DescTable: Table{Type: RefTypeFuncref}}},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const0},
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Init: []Index{0},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "constant derived element offset=0 and one index - imported table",
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input: &Module{
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{{Type: ExternTypeTable, DescTable: Table{Min: 1, Type: RefTypeFuncref}}},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const0},
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Init: []Index{0},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "constant derived element offset and two indices",
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input: &Module{
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TypeSection: []FunctionType{{}},
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TableSection: []Table{{Min: 3, Type: RefTypeFuncref}},
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FunctionSection: []Index{0, 0, 0, 0},
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CodeSection: []Code{codeEnd, codeEnd, codeEnd, codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const1},
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Init: []Index{0, 2},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{ // See: https://github.com/WebAssembly/spec/issues/1427
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name: "imported global derived element offset and no index",
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input: &Module{
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
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},
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TableSection: []Table{{Min: 1, Type: RefTypeFuncref}},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "imported global derived element offset and one index",
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input: &Module{
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
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},
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TableSection: []Table{{Min: 1, Type: RefTypeFuncref}},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}},
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Init: []Index{0},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "imported global derived element offset and one index - imported table",
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input: &Module{
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{
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{Type: ExternTypeTable, DescTable: Table{Min: 1, Type: RefTypeFuncref}},
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
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},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}},
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Init: []Index{0},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "imported global derived element offset - ignores min on imported table",
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input: &Module{
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{
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{Type: ExternTypeTable, DescTable: Table{Type: RefTypeFuncref}},
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
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},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}},
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Init: []Index{0},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "imported global derived element offset - two indices",
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input: &Module{
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI64}},
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
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},
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TableSection: []Table{{Min: 3, Type: RefTypeFuncref}},
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FunctionSection: []Index{0, 0, 0, 0},
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CodeSection: []Code{codeEnd, codeEnd, codeEnd, codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x1}},
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Init: []Index{0, 2},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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{
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name: "mixed elementSegments - const before imported global",
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input: &Module{
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TypeSection: []FunctionType{{}},
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ImportSection: []Import{
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI64}},
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{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
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},
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TableSection: []Table{{Min: 3, Type: RefTypeFuncref}},
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FunctionSection: []Index{0, 0, 0, 0},
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CodeSection: []Code{codeEnd, codeEnd, codeEnd, codeEnd},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const1},
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Init: []Index{0, 2},
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Type: RefTypeFuncref,
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},
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{
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OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x1}},
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Init: []Index{1, 2},
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Type: RefTypeFuncref,
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},
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},
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},
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},
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}
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for _, tt := range tests {
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tc := tt
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t.Run(tc.name, func(t *testing.T) {
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_, _, _, tables, err := tc.input.AllDeclarations()
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require.NoError(t, err)
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err = tc.input.validateTable(api.CoreFeaturesV1, tables, maxTableIndex)
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require.NoError(t, err)
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err = tc.input.validateTable(api.CoreFeaturesV1, tables, maxTableIndex)
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require.NoError(t, err)
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})
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}
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}
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func TestModule_validateTable_Errors(t *testing.T) {
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const maxTableIndex = 5
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tests := []struct {
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name string
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input *Module
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expectedErr string
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}{
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{
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name: "too many tables",
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input: &Module{
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TableSection: []Table{{}, {}, {}, {}, {}, {}},
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},
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expectedErr: "too many tables in a module: 6 given with limit 5",
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},
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{
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name: "type mismatch: unknown ref type",
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input: &Module{
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TableSection: []Table{{Type: RefTypeFuncref}},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{
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Opcode: OpcodeI32Const,
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Data: leb128.EncodeUint64(math.MaxUint64),
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},
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Type: 0xff,
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},
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},
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},
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expectedErr: "element type mismatch: table has funcref but element has unknown(0xff)",
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},
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{
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name: "type mismatch: funcref elem on extern table",
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input: &Module{
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TableSection: []Table{{Type: RefTypeExternref}},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{
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Opcode: OpcodeI32Const,
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Data: leb128.EncodeUint64(math.MaxUint64),
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},
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Type: RefTypeFuncref,
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},
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},
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},
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expectedErr: "element type mismatch: table has externref but element has funcref",
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},
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{
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name: "type mismatch: extern elem on funcref table",
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input: &Module{
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TableSection: []Table{{Type: RefTypeFuncref}},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{
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Opcode: OpcodeI32Const,
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Data: leb128.EncodeUint64(math.MaxUint64),
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},
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Type: RefTypeExternref,
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},
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},
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},
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expectedErr: "element type mismatch: table has funcref but element has externref",
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},
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{
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name: "non-nil externref",
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input: &Module{
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TableSection: []Table{{Type: RefTypeFuncref}},
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ElementSection: []ElementSegment{
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{
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OffsetExpr: ConstantExpression{
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Opcode: OpcodeI32Const,
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Data: leb128.EncodeUint64(math.MaxUint64),
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},
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Type: RefTypeExternref,
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Init: []Index{0},
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},
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},
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},
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expectedErr: "element[0].init[0] must be ref.null but was 0",
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},
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{
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name: "constant derived element offset - decode error",
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input: &Module{
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TypeSection: []FunctionType{{}},
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TableSection: []Table{{Type: RefTypeFuncref}},
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FunctionSection: []Index{0},
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CodeSection: []Code{codeEnd},
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ElementSection: []ElementSegment{
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|
{
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OffsetExpr: ConstantExpression{
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|
Opcode: OpcodeI32Const,
|
|
Data: leb128.EncodeUint64(math.MaxUint64),
|
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},
|
|
Init: []Index{0},
|
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Type: RefTypeFuncref,
|
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},
|
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},
|
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},
|
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expectedErr: "element[0] couldn't read i32.const parameter: overflows a 32-bit integer",
|
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},
|
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{
|
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name: "constant derived element offset - wrong ValType",
|
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input: &Module{
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TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
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|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI64Const, Data: const0}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
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expectedErr: "element[0] has an invalid const expression: i64.const",
|
|
},
|
|
{
|
|
name: "constant derived element offset - missing table",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const0}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "unknown table 0 as active element target",
|
|
},
|
|
{
|
|
name: "constant derived element offset exceeds table min",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 1, Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: leb128.EncodeInt32(2)}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0].init exceeds min table size",
|
|
},
|
|
{
|
|
name: "constant derived element offset puts init beyond table min",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 2, Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const1}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const1}, Init: []Index{0, 0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[1].init exceeds min table size",
|
|
},
|
|
{ // See: https://github.com/WebAssembly/spec/issues/1427
|
|
name: "constant derived element offset beyond table min - no init elements",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 1, Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: leb128.EncodeInt32(2)},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0].init exceeds min table size",
|
|
},
|
|
{
|
|
name: "constant derived element offset - funcidx out of range",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 1}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const1}, Init: []Index{0, 1},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0].init[1] funcidx 1 out of range",
|
|
},
|
|
{
|
|
name: "constant derived element offset - global out of range",
|
|
input: &Module{
|
|
ImportGlobalCount: 50,
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 1}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: const1}, Init: []Index{
|
|
ElementInitImportedGlobalFunctionReference | 1,
|
|
ElementInitImportedGlobalFunctionReference | 100,
|
|
},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0].init[1] globalidx 100 out of range",
|
|
},
|
|
{
|
|
name: "imported global derived element offset - missing table",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "unknown table 0 as active element target",
|
|
},
|
|
{
|
|
name: "imported global derived element offset - funcidx out of range",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Min: 1}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}}, Init: []Index{0, 1},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0].init[1] funcidx 1 out of range",
|
|
},
|
|
{
|
|
name: "imported global derived element offset - wrong ValType",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI64}},
|
|
},
|
|
TableSection: []Table{{Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0] (global.get 0): import[0].global.ValType != i32",
|
|
},
|
|
{
|
|
name: "imported global derived element offset - decode error",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{
|
|
Opcode: OpcodeGlobalGet,
|
|
Data: leb128.EncodeUint64(math.MaxUint64),
|
|
},
|
|
Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0] couldn't read global.get parameter: overflows a 32-bit integer",
|
|
},
|
|
{
|
|
name: "imported global derived element offset - no imports",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
GlobalSection: []Global{{Type: GlobalType{ValType: ValueTypeI32}}}, // ignored as not imported
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0] (global.get 0): out of range of imported globals",
|
|
},
|
|
{
|
|
name: "imported global derived element offset - no imports are globals",
|
|
input: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeFunc, DescFunc: 0},
|
|
},
|
|
TableSection: []Table{{Type: RefTypeFuncref}},
|
|
FunctionSection: []Index{0},
|
|
GlobalSection: []Global{{Type: GlobalType{ValType: ValueTypeI32}}}, // ignored as not imported
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}}, Init: []Index{0},
|
|
Type: RefTypeFuncref,
|
|
},
|
|
},
|
|
},
|
|
expectedErr: "element[0] (global.get 0): out of range of imported globals",
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
_, _, _, tables, err := tc.input.AllDeclarations()
|
|
require.NoError(t, err)
|
|
err = tc.input.validateTable(api.CoreFeaturesV1, tables, maxTableIndex)
|
|
require.EqualError(t, err, tc.expectedErr)
|
|
})
|
|
}
|
|
}
|
|
|
|
var (
|
|
const0 = leb128.EncodeInt32(0)
|
|
const1 = leb128.EncodeInt32(1)
|
|
)
|
|
|
|
func TestModule_buildTables(t *testing.T) {
|
|
three := uint32(3)
|
|
tests := []struct {
|
|
name string
|
|
module *Module
|
|
importedTables []*TableInstance
|
|
importedGlobals []*GlobalInstance
|
|
expectedTables []*TableInstance
|
|
}{
|
|
{
|
|
name: "empty",
|
|
module: &Module{
|
|
ElementSection: []ElementSegment{},
|
|
},
|
|
},
|
|
{
|
|
name: "min zero",
|
|
module: &Module{
|
|
TableSection: []Table{{Type: RefTypeFuncref}},
|
|
ElementSection: []ElementSegment{},
|
|
},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 0), Min: 0, Type: RefTypeFuncref}},
|
|
},
|
|
{
|
|
name: "min/max",
|
|
module: &Module{
|
|
TableSection: []Table{{Min: 1, Max: &three}},
|
|
ElementSection: []ElementSegment{},
|
|
},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 1), Min: 1, Max: &three}},
|
|
},
|
|
{ // See: https://github.com/WebAssembly/spec/issues/1427
|
|
name: "constant derived element offset=0 and no index",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 1}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{},
|
|
},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 1), Min: 1}},
|
|
},
|
|
{
|
|
name: "null extern refs",
|
|
module: &Module{
|
|
TableSection: []Table{{Min: 10, Type: RefTypeExternref}},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{5}}, Init: []Index{ElementInitNullReference, ElementInitNullReference, ElementInitNullReference}}, // three null refs.
|
|
},
|
|
},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 10), Min: 10, Type: RefTypeExternref}},
|
|
},
|
|
{
|
|
name: "constant derived element offset=0 and one index",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 1}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{0}}, Init: []Index{0}},
|
|
},
|
|
},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 1), Min: 1}},
|
|
},
|
|
{
|
|
name: "constant derived element offset - imported table",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{0}}, Init: []Index{0}},
|
|
},
|
|
},
|
|
importedTables: []*TableInstance{{Min: 2}},
|
|
expectedTables: []*TableInstance{{Min: 2}},
|
|
},
|
|
{
|
|
name: "constant derived element offset=0 and one index - imported table",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{{Type: ExternTypeTable, DescTable: Table{Min: 1}}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{0}}, Init: []Index{0}},
|
|
},
|
|
},
|
|
importedTables: []*TableInstance{{Min: 1}},
|
|
expectedTables: []*TableInstance{{Min: 1}},
|
|
},
|
|
{
|
|
name: "constant derived element offset and two indices",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
TableSection: []Table{{Min: 3}},
|
|
FunctionSection: []Index{0, 0, 0, 0},
|
|
CodeSection: []Code{codeEnd, codeEnd, codeEnd, codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{1}}, Init: []Index{0, 2}},
|
|
},
|
|
},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 3), Min: 3}},
|
|
},
|
|
{ // See: https://github.com/WebAssembly/spec/issues/1427
|
|
name: "imported global derived element offset and no index",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Min: 1}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{},
|
|
},
|
|
importedGlobals: []*GlobalInstance{{Type: GlobalType{ValType: ValueTypeI32}, Val: 1}},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 1), Min: 1}},
|
|
},
|
|
{
|
|
name: "imported global derived element offset and one index",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Min: 2}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{0}}, Init: []Index{0}},
|
|
},
|
|
},
|
|
importedGlobals: []*GlobalInstance{{Type: GlobalType{ValType: ValueTypeI32}, Val: 1}},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 2), Min: 2}},
|
|
},
|
|
{
|
|
name: "imported global derived element offset and one index - imported table",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeTable, DescTable: Table{Min: 1}},
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{0}}, Init: []Index{0}},
|
|
},
|
|
},
|
|
importedGlobals: []*GlobalInstance{{Type: GlobalType{ValType: ValueTypeI32}, Val: 1}},
|
|
importedTables: []*TableInstance{{References: make([]Reference, 2), Min: 2}},
|
|
expectedTables: []*TableInstance{{Min: 2, References: []Reference{0, 0}}},
|
|
},
|
|
{
|
|
name: "imported global derived element offset - ignores min on imported table",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeTable, DescTable: Table{}},
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{0}}, Init: []Index{0}},
|
|
},
|
|
},
|
|
importedGlobals: []*GlobalInstance{{Type: GlobalType{ValType: ValueTypeI32}, Val: 1}},
|
|
importedTables: []*TableInstance{{References: make([]Reference, 2), Min: 2}},
|
|
expectedTables: []*TableInstance{{Min: 2, References: []Reference{0, 0}}},
|
|
},
|
|
{
|
|
name: "imported global derived element offset - two indices",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI64}},
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Min: 3}, {Min: 100}},
|
|
FunctionSection: []Index{0, 0, 0, 0},
|
|
CodeSection: []Code{codeEnd, codeEnd, codeEnd, codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}},
|
|
Init: []Index{ElementInitNullReference, 2},
|
|
TableIndex: 1,
|
|
},
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x1}},
|
|
Init: []Index{0, 2},
|
|
TableIndex: 0,
|
|
},
|
|
},
|
|
},
|
|
importedGlobals: []*GlobalInstance{
|
|
{Type: GlobalType{ValType: ValueTypeI64}, Val: 3},
|
|
{Type: GlobalType{ValType: ValueTypeI32}, Val: 1},
|
|
},
|
|
expectedTables: []*TableInstance{
|
|
{References: make([]Reference, 3), Min: 3},
|
|
{References: make([]Reference, 100), Min: 100},
|
|
},
|
|
},
|
|
{
|
|
name: "mixed elementSegments - const before imported global",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI64}},
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Min: 3}},
|
|
FunctionSection: []Index{0, 0, 0, 0},
|
|
CodeSection: []Code{codeEnd, codeEnd, codeEnd, codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{1}}, Init: []Index{0, 2}},
|
|
{OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{1}}, Init: []Index{1, 2}},
|
|
},
|
|
},
|
|
importedGlobals: []*GlobalInstance{
|
|
{Type: GlobalType{ValType: ValueTypeI64}, Val: 3},
|
|
{Type: GlobalType{ValType: ValueTypeI32}, Val: 1},
|
|
},
|
|
expectedTables: []*TableInstance{{References: make([]Reference, 3), Min: 3}},
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
m := &ModuleInstance{
|
|
Tables: append(tc.importedTables, make([]*TableInstance, len(tc.module.TableSection))...),
|
|
Globals: tc.importedGlobals,
|
|
}
|
|
err := m.buildTables(tc.module, false)
|
|
require.NoError(t, err)
|
|
|
|
require.Equal(t, tc.expectedTables, m.Tables)
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestModule_buildTable_Errors covers the only late error conditions possible.
|
|
func TestModule_buildTable_Errors(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
module *Module
|
|
importedTables []*TableInstance
|
|
importedGlobals []*GlobalInstance
|
|
expectedErr string
|
|
}{
|
|
{
|
|
name: "constant derived element offset exceeds table min - imported table",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{{Type: ExternTypeTable, DescTable: Table{}}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeI32Const, Data: []byte{2}},
|
|
Init: []Index{0},
|
|
},
|
|
},
|
|
},
|
|
importedTables: []*TableInstance{{References: make([]Reference, 2), Min: 2}},
|
|
expectedErr: "element[0].init exceeds min table size",
|
|
},
|
|
{
|
|
name: "imported global derived element offset exceeds table min",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Min: 2}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}},
|
|
Init: []Index{0},
|
|
},
|
|
},
|
|
},
|
|
importedGlobals: []*GlobalInstance{{Type: GlobalType{ValType: ValueTypeI32}, Val: 2}},
|
|
expectedErr: "element[0].init exceeds min table size",
|
|
},
|
|
{
|
|
name: "imported global derived element offset exceeds table min imported table",
|
|
module: &Module{
|
|
TypeSection: []FunctionType{{}},
|
|
ImportSection: []Import{
|
|
{Type: ExternTypeTable, DescTable: Table{}},
|
|
{Type: ExternTypeGlobal, DescGlobal: GlobalType{ValType: ValueTypeI32}},
|
|
},
|
|
TableSection: []Table{{Min: 2}},
|
|
FunctionSection: []Index{0},
|
|
CodeSection: []Code{codeEnd},
|
|
ElementSection: []ElementSegment{
|
|
{
|
|
OffsetExpr: ConstantExpression{Opcode: OpcodeGlobalGet, Data: []byte{0x0}},
|
|
Init: []Index{0},
|
|
},
|
|
},
|
|
},
|
|
importedTables: []*TableInstance{{References: make([]Reference, 2), Min: 2}},
|
|
importedGlobals: []*GlobalInstance{{Type: GlobalType{ValType: ValueTypeI32}, Val: 2}},
|
|
expectedErr: "element[0].init exceeds min table size",
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
m := &ModuleInstance{
|
|
Tables: append(tc.importedTables, make([]*TableInstance, len(tc.module.TableSection))...),
|
|
Globals: tc.importedGlobals,
|
|
}
|
|
err := m.buildTables(tc.module, false)
|
|
require.EqualError(t, err, tc.expectedErr)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestTableInstance_Grow(t *testing.T) {
|
|
expOnErr := uint32(0xffff_ffff) // -1 as signed i32.
|
|
max10 := uint32(10)
|
|
tests := []struct {
|
|
name string
|
|
currentLen int
|
|
max *uint32
|
|
delta, exp uint32
|
|
}{
|
|
{
|
|
name: "growing ousside 32-bit range",
|
|
currentLen: 0x10,
|
|
delta: 0xffff_fff0,
|
|
exp: expOnErr,
|
|
},
|
|
{
|
|
name: "growing zero",
|
|
currentLen: 0,
|
|
delta: 0,
|
|
exp: 0,
|
|
},
|
|
{
|
|
name: "growing zero on non zero table",
|
|
currentLen: 5,
|
|
delta: 0,
|
|
exp: 5,
|
|
},
|
|
{
|
|
name: "grow zero on max",
|
|
currentLen: 10,
|
|
delta: 0,
|
|
max: &max10,
|
|
exp: 10,
|
|
},
|
|
{
|
|
name: "grow out of range beyond max",
|
|
currentLen: 10,
|
|
delta: 1,
|
|
max: &max10,
|
|
exp: expOnErr,
|
|
},
|
|
{
|
|
name: "grow out of range beyond max part2",
|
|
currentLen: 10,
|
|
delta: 100,
|
|
max: &max10,
|
|
exp: expOnErr,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
table := &TableInstance{References: make([]uintptr, tc.currentLen), Max: tc.max}
|
|
actual := table.Grow(tc.delta, 0)
|
|
require.Equal(t, tc.exp, actual)
|
|
})
|
|
}
|
|
}
|
|
|
|
func Test_unwrapElementInitGlobalReference(t *testing.T) {
|
|
actual, ok := unwrapElementInitGlobalReference(12345 | ElementInitImportedGlobalFunctionReference)
|
|
require.True(t, ok)
|
|
require.Equal(t, actual, uint32(12345))
|
|
|
|
actual, ok = unwrapElementInitGlobalReference(12345)
|
|
require.False(t, ok)
|
|
require.Equal(t, actual, uint32(12345))
|
|
}
|
|
|
|
// Test_ElementInitSpecials ensures these special consts are larger than MaximumFunctionIndex so that
|
|
// they won't collide with the actual index.
|
|
func Test_ElementInitSpecials(t *testing.T) {
|
|
require.True(t, ElementInitNullReference > MaximumFunctionIndex)
|
|
require.True(t, ElementInitImportedGlobalFunctionReference > MaximumFunctionIndex)
|
|
}
|