Bug 70015

Summary:	Errors with sys-devel/gcc-3.4.2-r3 (wrong assembly code generated)
Product:	Gentoo Linux	Reporter:	Ervin Németh <ervin.nemeth+org.gentoo.bugs>
Component:	[OLD] Core system	Assignee:	Gentoo Toolchain Maintainers <toolchain>
Status:	RESOLVED INVALID
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	All
OS:	All
Whiteboard:
Package list:		Runtime testing required:	---

Description Ervin Németh 2004-11-04 01:22:53 UTC

sys-devel/gcc-3.4.2-r3 fails to compile glibc mozilla-firefox and gimp for me, using CFLAGS="-pipe -march=athlon-xp -mmmx -msse -m3dnow -mfpmath=sse -O2 -funroll-loops -funswitch-loops -fprefetch-loop-arrays -finline-functions -finline-limit=24 -frename-registers -fweb -maccumulate-outgoing-args -fno-align-jumps -fno-align-loops -fno-align-labels -fomit-frame-pointer -fmove-all-movables -ftracer -funit-at-a-time --param=max-unrolled-insns=16 --param=max-unswitch-insns=24 --param=max-reload-search-insns=256".

The compilation fails with "as" messages reporting syntax errors.

Downgrading to sys-devel/gcc-3.4.2-r2 has solved my problem.

Comment 1 Daniel Black (RETIRED) gentoo-dev

2004-11-04 02:22:39 UTC

Maybe adding more CFLAGS will fix it? ;-)

Comment 2 Ervin Németh 2004-11-04 02:30:54 UTC

Can't help, I'm an addict ;-)  Gentoo rulez!

Comment 3 Travis Tilley (RETIRED) gentoo-dev

2004-11-07 13:25:41 UTC

feel free to re-open this bug with some actual errors and more information if the problem persists without those insane cflags.

Comment 4 Ervin Németh 2004-11-07 13:35:18 UTC

Let me explain it, again.

Fact #1: gcc-3.4.2-r2 works

Fact #2: gcc-3.4.2-r3 dosn't work with same conditions

Fact #3 gcc-3.4.2-r2 and gcc-3.4.2-r3 differs only in Gentoo patches

Deduction: Gentoo patches break the compiler

Comment 5 Travis Tilley (RETIRED) gentoo-dev

2004-11-07 18:05:20 UTC

actually, the major change is a cvs branch update. a few patches were -removed- that add features which are no longer in the fedora src rpms they were borrowed from. no bug fix patches were dropped...

try 3.4.3 i guess, though it should be pretty similar to 3.4.2-r3. the branch update used in 3.4.2-r3 was very close to the 3.4.3 freeze (which is why i removed 3.4.2-r3 when 3.4.3 was added).

Comment 6 Ervin Németh 2004-11-08 03:42:42 UTC

Look, what happened now. As gcc-3.4.3 failed to compile glibc, I tried to make gcc to keep the temporary assembly file. This time gcc didn't fail. I've cleaned, and did an emerge glibc, again. This time gcc failed on an other file.

It is clearly a hardware failure. The only strange thing is that post 3.4.2-r3 gcc is needed for it.

And the machine is an office-PC that isn't overclocked at all. Grr.

Sorry for wasting your time.