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This commit is contained in:
Marco Manino
2024-03-18 08:32:17 +01:00
committed by Ayke
parent cef2a82c97
commit 71878c2c0c
1 changed files with 8 additions and 1 deletions
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interp/interpreter.go
+8 -1
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@@ -427,13 +427,20 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
if err != nil { if err != nil {
return nil, mem, r.errorAt(inst, err) return nil, mem, r.errorAt(inst, err)
} }
// typecodePtr always point to the numMethod field in the type
// description struct. The methodSet, when present, comes right
// before the numMethod field (the compiler doesn't generate
// method sets for concrete types without methods).
// Considering that the compiler doesn't emit interface type
// asserts for interfaces with no methods (as the always succeed)
// then if the offset is zero, this assert must always fail.
if typecodePtr.offset() == 0 { if typecodePtr.offset() == 0 {
locals[inst.localIndex] = literalValue{uint8(0)} locals[inst.localIndex] = literalValue{uint8(0)}
break break
} }
typecodePtrOffset, err := typecodePtr.addOffset(-int64(r.pointerSize)) typecodePtrOffset, err := typecodePtr.addOffset(-int64(r.pointerSize))
if err != nil { if err != nil {
return nil, mem, r.errorAt(inst, err) // unlikely return nil, mem, r.errorAt(inst, err)
} }
methodSetPtr, err := mem.load(typecodePtrOffset, r.pointerSize).asPointer(r) methodSetPtr, err := mem.load(typecodePtrOffset, r.pointerSize).asPointer(r)
if err != nil { if err != nil {