fix: support variadic parameters on methods

_test/variadic5.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"fmt"
+)
+
+type A struct {
+}
+
+func (a A) f(vals ...bool) {
+	for _, v := range vals {
+		fmt.Println(v)
+	}
+}
+
+func main() {
+	a := A{}
+	a.f(true)
+}
+
+// Output:
+// true

interp/run.go

@@ -671,7 +671,11 @@ func call(n *node) {
 
 		// Init variadic argument vector
 		if variadic >= 0 {
-			vararg = nf.data[numRet+variadic]
+			if method {
+				vararg = nf.data[numRet+variadic+1]
+			} else {
+				vararg = nf.data[numRet+variadic]
+			}
 		}
 
 		// Copy input parameters from caller