https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119012
--- Comment #24 from Levi Zim <rsworktech at outlook dot com> ---
(In reply to Sam James from comment #23)
> (In reply to Levi Zim from comment #11)
> > It comes with a similar pattern that .gnu.lto_.jmpfuncs.1 is the most
> > different section ignoring offset differences and lto opts.
>
> ... then maybe related to PR119977 (would need the lto-dump -list -objects
> diff to be sure, see what I did over there).
Thanks. For this bug the size of .gnu.lto_.decls.1 is same but
.gnu.lto_.jmpfuncs.1 differs.
stage2-gcc/lto-dump -demangle -list -objects stage2-gcc/builtins.o >
stage2.ltodump
stage3-gcc/lto-dump -demangle -list -objects stage3-gcc/builtins.o >
stage3.ltodump
echo "Old size: $(cat stage2.ltodump | grep .gnu.lto_.decls.1 | awk -F' '
'{print $3}')"
echo "New size: $(cat stage3.ltodump | grep .gnu.lto_.decls.1 | awk -F' '
'{print $3}')"
Old size: 237166
New size: 237166
cat stage2.ltodump | tail +6 | sed '/^Type/Q' | sed 's/^[ \t]*//' | cut -d ' '
-f3- | awk '{print $3 "\t" $2}' > stage2.sections
cat stage3.ltodump | tail +6 | sed '/^Type/Q' | sed 's/^[ \t]*//' | cut -d ' '
-f3- | awk '{print $3 "\t" $2}' > stage3.sections
git diff --no-index stage{2,3}.sections
diff --git a/stage2.sections b/stage3.sections
index cd82f3d..7b56c8e 100644
--- a/stage2.sections
+++ b/stage3.sections
@@ -3,7 +3,7 @@
.gnu.lto_.icf.1 7366
.gnu.lto_.ipa_sra.1 6364
.gnu.lto_.inline.1 26107
-.gnu.lto_.jmpfuncs.1 19482
+.gnu.lto_.jmpfuncs.1 19469
.gnu.lto_.pureconst.1 882
.gnu.lto_.ipa_modref.1 3771
.gnu.lto_.lto.1 8
@@ -358,4 +358,4 @@
.gnu.lto_.decls.1 237166
.gnu.lto_.symtab.1 36223
.gnu.lto_.ext_symtab.1 1115
-.gnu.lto_.opts 331
+.gnu.lto_.opts 330
../gcc14/contrib/compare-lto -p stage{2,3}-gcc/builtins.o
stage2-gcc/builtins.o stage3-gcc/builtins.o differ: byte 41, line 1
stripping off LTO option section, then retrying
stage2-gcc/builtins.o.stripped stage3-gcc/builtins.o.stripped differ: byte
41, line 1
preserving stage2-gcc/builtins.o.stripped stage3-gcc/builtins.o.stripped
And it seems that after some packaging changes(new gcc14 package with reduced
features compared to gcc:
https://gitlab.archlinux.org/archlinux/packaging/packages/gcc14/-/blob/main/PKGBUILD).
This bug always reproduces even if I revert the previously bisected commit :/
