[Bug d/94623] ice for ./gdc.test/compilable/interpret3.d

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94623

--- Comment #5 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to David Binderman from comment #4)
> Configure flags:
> 
> ../trunk.git/configure --prefix=/home/dcb/gcc/results.20200416 \
>     --disable-bootstrap \
>     --disable-multilib \
>     --disable-werror \
>     --enable-checking=df,extra,fold,rtl,yes \
>     --enable-languages=ada,c,c++,d,fortran,go
> 
> sed 's/-O2/-O3 -march=native/' < Makefile > Makefile.tmp
> mv Makefile.tmp Makefile
> 
> Host gcc version is 9.3.1 and glibc version is 2.30 on fedora x86_64.
> 
> The line that ices is the following:
> 
>         assert((*collateral->value->elements)[5]->type->ty == Tclass);
> 
> Hopefully that is enough information to be able to attempt to reproduce
> the problem.

g++ host: gcc version 9.3.1 20200419 (GCC) 
glibc: 2.30-0ubuntu2.1 (ubuntu x86_64-linux-gnu)
gdc build: gcc version 10.0.1 20200419 (experimental) (GCC) 
gdc configure: ../configure --disable-bootstrap --disable-multilib
--enable-werror --enable-checking=df,extra,fold,rtl,yes
--enable-languages=c++,d


$ make check-gcc-d RUNTESTFLAGS="compilable.exp=interpret3.d --all"
...
PASS: compilable/interpret3.d   (test for excess errors)
PASS: compilable/interpret3.d   output-exists interpret3.o
PASS: compilable/interpret3.d -finline-functions   (test for excess errors)
PASS: compilable/interpret3.d -finline-functions    output-exists interpret3.o
...


Can't say I can reproduce at all.

IIRC, Fedora has some compiler hardening patches switched on by default.  I'll
try once more with '-O3 -march=native -fstack-protector-strong'