https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65755
--- Comment #1 from Ian Lance Taylor <ian at airs dot com> --- Thanks, here is a small test case. package main import ( "reflect" ) type S1 struct{} func (S1) Fix() string { type s struct { f int } return reflect.TypeOf(s{}).Field(0).Name } type S2 struct{} func (S2) Fix() string { type s struct { g bool } return reflect.TypeOf(s{}).Field(0).Name } func main() { f1 := S1{}.Fix() f2 := S2{}.Fix() if f1 != "f" || f2 != "g" { panic(f1 + f2) } }