https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38534
--- Comment #27 from Lukas Grätz <lukas.gra...@tu-darmstadt.de> --- (In reply to Jakub Jelinek from comment #26) > (In reply to Lukas Grätz from comment #25) > > (In reply to Jakub Jelinek from comment #19) > > > (In reply to H.J. Lu from comment #18) > > > > (In reply to Jakub Jelinek from comment #17) > > > > > E.g. shouldn't it at least be disabled for -O0 and -Og and shouldn't > > > > > we > > > > > > > > We can disable this for -O0 and -Og. > > > > > > I think we should go for that. > > > > > > > This is independent from debugging, but I thought the patch was only meant > > for -O3. Have you thought about the following situation: > > Throwing an exception through -fno-exceptions code is UB, don't do that. Thanks for the info! I guess this UB is implicit in GCC's documentation for "-fexceptions": "However, you may need to enable this option when compiling C code that needs to interoperate properly with exception handlers written in C++." I would suggest to remove the "may" and to be more clear: "However, you need to enable this option when compiling C code that could (implicitly) propagate an exception (from C++) to an exception handler written in C++."
