case OCLOSUREVAR, OCFUNC:
case OCALLINTER, OCALLFUNC, OCALLMETH:
- if n.Op == OCALLINTER {
+ if n.Op == OCALLINTER || n.Op == OCALLMETH {
+ // We expect both interface call reflect.Type.Method and concrete
+ // call reflect.(*rtype).Method.
usemethod(n)
+ }
+ if n.Op == OCALLINTER {
markUsedIfaceMethod(n)
}
}
}
+ // Don't mark reflect.(*rtype).Method, etc. themselves in the reflect package.
+ // Those functions may be alive via the itab, which should not cause all methods
+ // alive. We only want to mark their callers.
+ if myimportpath == "reflect" {
+ switch Curfn.Func.Nname.Sym.Name { // TODO: is there a better way than hardcoding the names?
+ case "(*rtype).Method", "(*rtype).MethodByName", "(*interfaceType).Method", "(*interfaceType).MethodByName":
+ return
+ }
+ }
+
// Note: Don't rely on res0.Type.String() since its formatting depends on multiple factors
// (including global variables such as numImports - was issue #19028).
// Also need to check for reflect package itself (see Issue #38515).
--- /dev/null
+// run
+
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// See issue 44207.
+
+package main
+
+import "reflect"
+
+type S int
+
+func (s S) M() {}
+
+func main() {
+ t := reflect.TypeOf(S(0))
+ fn, ok := reflect.PtrTo(t).MethodByName("M")
+ if !ok {
+ panic("FAIL")
+ }
+ fn.Func.Call([]reflect.Value{reflect.New(t)})
+}