https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86301
--- Comment #5 from zhonghao at pku dot org.cn --- (In reply to Jonathan Wakely from comment #4) > If you tried the latest g++ why are you reporting bugs for version 8.0.1? (In reply to Jonathan Wakely from comment #3) > (In reply to zhonghao from comment #2) > > (In reply to Jonathan Wakely from comment #1) > > > (In reply to zhonghao from comment #0) > > > > A previous version of clang++ produces similar error message for this > > > > code, > > > > but was fixed. > > > > > > No it didn't, the error shown in the Clang bug comes from GCC! > > > > > > Please make more effort to understand what you are doing, OR I WILL BAN > > > YOUR > > > ACCOUNT. > > > > Did you try the latest g++ and clang++. > > Yes. > > > They produce different results when > > they compile the code. My clang is 7.0.0. It does not produce any error > > messages for this code. > > That doesn't mean the code is valid. Is the code invalid? Do you mean that clang accepts a piece of invalid code? That sounds a bug in clang? > > > Do the difference indicate bugs in g++? > > No. See https://gcc.gnu.org/gcc-7/porting_to.html#hypothetical-instantiation Is this code a corner case? Or, does it illustrate an undefined behavior?
