Bug 322831 – sys-devel/gcc-4.5.0 create invalid binaries with -fdelayed-branch on parisc

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Guy Martin (RETIRED) 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) 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) 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) 2011-02-13 08:17:53 UTC]

What's the verdict?

[Comment 4 Jeroen Roovers (RETIRED) 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) 2011-08-06 01:08:25 UTC]

Fixed in 4.5.3.