Bug 322831

Summary:	sys-devel/gcc-4.5.0 create invalid binaries with -fdelayed-branch on parisc
Product:	Gentoo Linux	Reporter:	Guy Martin (RETIRED) <gmsoft>
Component:	[OLD] GCC Porting	Assignee:	HPPA Porters <hppa>
Status:	RESOLVED FIXED
Severity:	normal	CC:	toolchain
Priority:	High
Version:	unspecified
Hardware:	HPPA
OS:	Linux
URL:	http://thread.gmane.org/gmane.linux.ports.parisc/2903
See Also:	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44469
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:	365935
Bug Blocks:	915000
Attachments:	Stripped down version of gengenrtl which triggers the issue

Description Guy Martin (RETIRED) gentoo-dev

2010-06-05 11:41:17 UTC

While trying to build gcc-4.5.0, I've got the following error :

build/gengenrtl -h > tmp-genrtl.h
/bin/sh: line 1:  2767 Segmentation fault      build/gengenrtl > tmp-genrtl.c
make[3]: *** [s-genrtl] Error 139

emerging gcc with BOOT_CFLAGS="-O2 -fno-delayed-branch" solves the issue.

Comment 1 Guy Martin (RETIRED) gentoo-dev

2010-06-05 11:43:39 UTC

Created attachment 234185 [details]
Stripped down version of gengenrtl which triggers the issue

Added stripped down version of gengenrtl.c to repro the issue.

Observed behavior :

gcc -O2  -> Segv
gcc -O2 -fno-delayed-branch -> OK
gcc -O1 -> OK
gcc -O1 -freorder-blocks -> Segv
gcc -O1 -freorder-blocks -fno-delayed-branch -> OK
gcc -O0 -freorder-blocks -fdelayed-branch -> OK

Comment 2 Guy Martin (RETIRED) gentoo-dev

2010-08-02 17:42:24 UTC

This seems to be similar to PR 44469 : http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44469
The testcase is quite similar to the one I've attached but the workaround doesn't seem to help. I'm doublechecking right now.

Comment 3 Ryan Hill (RETIRED) gentoo-dev

2011-02-13 08:17:53 UTC

What's the verdict?

Comment 4 Jeroen Roovers (RETIRED) gentoo-dev

2011-07-14 23:10:55 UTC

According to the upstream bug report, it should be in 4.5.3, which was released months ago but isn't in the tree yet.

Comment 5 Ryan Hill (RETIRED) gentoo-dev

2011-08-06 01:08:25 UTC

Fixed in 4.5.3.