On 18/06/21 00:05, Martin Sebor wrote:
Right, with -O0 we understand why it happens.
I think I have found a minimal way to reproduce the build failure:
make BOOT_CFLAGS="-O0" bootstrap
No environment variables set.
Setting CFLAGS, CXXFLAGS or both does not seem to have any effect.
Additionally at -O1 I found:
../../gcc-xtra/gcc/gimplify.c: In function ‘gimplify_status
gimplify_omp_loop(tree_node**, gimple**)’:
../../gcc-xtra/gcc/gimplify.c:12975:17: error: ‘last’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
12975 | if (pass != last)
| ^~
cc1plus: all warnings being treated as errors
And finally at -O2 there were no problems.
It would have been interesting to try other options, but the build takes
an enormous amount of time...
Thank you very much.
Best regards,
José Rui
