Re: [lmi] ICE with '-fno-omit-frame-pointer', 64-bit msw [Was: Segfault in wxGrid]

[Vadim Zeitlin]

On Sat, 23 Mar 2019 16:15:36 +0000 Greg Chicares <address@hidden> wrote:

GC> We've been using '-fno-omit-frame-pointer' since 2016. However, we
GC> may have to inhibit it for x86_64-w64-mingw32-gcc version 8.2.0
GC> due to a compiler defect:

 This is unfortunate, but IME we don't use stack traces generated by
production binaries much anyhow, so it's probably not that important.

GC> This gcc-8.1 defect report:
GC>   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86593
GC> seems to be relevant, although the diagnostic I see refers to a
GC> different line in 'based_loc_descr'.

 But it also looks to be triggered by very similar code, so it seems to be
almost certain to be the same bug. Perhaps it will be backported to 8.x
branch by the time of the next release, but in any case it will certainly
be fixed in gcc 9 which shouldn't be too far away.

 Regards,
VZ