https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115918
Bug ID: 115918
Summary: Bootstrap failure in GNAT with
--with-build-config=bootstrap-lto
--enable-languages=c,ada,c++,lto
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: arsen at gcc dot gnu.org
CC: dkm at gcc dot gnu.org
Target Milestone: ---
Created attachment 58658
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58658&action=edit
fail.log
current trunk (r15-2026-g44c9403ed1833a) fails to bootstrap w/ Ada and
bootstrap-lto enabled:
~/gcc/scratch-build 1 $ grep 'internal compiler error:' fail.log
../../gcc/gcc/ada/bindo-elaborators.adb:1285:7: internal compiler error: in
fold_stmt, at gimple-range-fold.cc:701
../../gcc/gcc/ada/table.adb:164:7: internal compiler error: in fold_stmt, at
gimple-range-fold.cc:701
../../gcc/gcc/ada/bindo-elaborators.adb:704:7: internal compiler error: in
fold_stmt, at gimple-range-fold.cc:701
ada/g-graphs.adb:986:10: internal compiler error: in fold_stmt, at
gimple-range-fold.cc:701
../../gcc/gcc/ada/sinput.adb:541:4: internal compiler error: in fold_stmt, at
gimple-range-fold.cc:701
../../gcc/gcc/ada/fmap.adb:175:4: internal compiler error: in fold_stmt, at
gimple-range-fold.cc:701
~/gcc/scratch-build$ ./config.status --config
'--with-build-config=bootstrap-lto' '--enable-languages=c,ada,c++,lto'
more complete log attached. no special setup was required
host gcc: gcc (Gentoo Hardened 14.1.1_p20240706 p3) 14.1.1 20240706
host gnat: GNAT 14.1.1 20240706
interestingly, all the files that are failing are .adb files. this could be
because there is an LTO bug that only gets noticed or GNAT, or because GNAT
does something to cause LTO to fail. unsure which one is the case
I could not reproduce this for gcc-14 20240706
