https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92338
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Btw, clang agrees with GCC here. t.C:11:22: error: conversion from 'Test' to 'long' is ambiguous int test2 = test[Test()]; ^~~~~~ t.C:3:5: note: candidate function operator int(){ return 0; } ^ t.C:4:5: note: candidate function operator double(){ return 0; } ^ 1 error generated.