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Bug 772135

Summary: gcc-4.7.0-0.4.fc17 armv7hl FTBFS
Product: [Fedora] Fedora Reporter: Dennis Gilmore <dennis>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: jakub, pbrobinson
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-02-02 11:53:14 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 245418    
Attachments:
Description Flags
simplify-rtx.gcda
none
simplify-rtx.i none

Description Dennis Gilmore 2012-01-06 05:21:27 UTC 
Description of problem:
../../gcc/simplify-rtx.c: In function 'simplify_subreg':
../../gcc/simplify-rtx.c:5753:1: internal compiler error: output_operand: invalid shift operand
Please submit a full bug report,             
with preprocessed source if appropriate.     
See <http://bugzilla.redhat.com/bugzilla> for instructions.
The bug is not reproducible, so it is likely a hardware or OS problem.
make[3]: *** [simplify-rtx.o] Error 1
make[3]: *** Waiting for unfinished jobs....
rm gcj-dbtool.pod gij.pod jcf-dump.pod jv-convert.pod grmic.pod gcov.pod gcj.pod cpp.pod gfdl.pod fsf-funding.pod gc-analyze.pod gcc.pod gfortran.pod
make[3]: Leaving directory `/builddir/build/BUILD/gcc-4.7.0-20120105/obj-armv7hl-redhat-linux-gnueabi/gcc'
make[2]: *** [all-stagefeedback-gcc] Error 2
make[2]: Leaving directory `/builddir/build/BUILD/gcc-4.7.0-20120105/obj-armv7hl-redhat-linux-gnueabi'
make[1]: *** [stagefeedback-bubble] Error 2
make[1]: Leaving directory `/builddir/build/BUILD/gcc-4.7.0-20120105/obj-armv7hl-redhat-linux-gnueabi'
make: *** [profiledbootstrap] Error 2


there is no preprocessed source available

full build log is at http://ausil.us/gcc-4.7.0-0.4.fc17-armv7hl-build.log
Comment 1 Jakub Jelinek 2012-01-06 08:22:17 UTC 
Is it reproduceable?
"The bug is not reproducible, so it is likely a hardware or OS problem."
suggests that it is not, the driver in case of ICEs retries to compile the same source 3 times and if they don't fail the same all the time, which is this case, it is likely HW bug.  Of course there are chances that this 3 times rebuild doesn't work reliably after being ported to 4.7 (in 4.6 I'm pretty sure it is), but there haven't been any significant changes to it, or there might be a bug triggered by ASLR.  So, even if you can't reproduce it, please try to stop the build after this spot and try to run the simplify-rtx.c -fprofile-use compilation many times in a loop to see if it triggers.  Unfortunately this is FDO, so it might depend on the simplify-rtx.gcda file changing concurrently from other compilations.
Comment 2 Jakub Jelinek 2012-01-06 08:34:38 UTC 
And if you can reproduce it, I'm interested in both the preprocessed source (simplify-rtx.i) and simplify-rtx.gcda as well.
Comment 3 Dennis Gilmore 2012-01-06 15:39:47 UTC 
Created attachment 551177 [details]
simplify-rtx.gcda
Comment 4 Dennis Gilmore 2012-01-06 15:50:34 UTC 
Created attachment 551182 [details]
simplify-rtx.i
Comment 5 Peter Robinson 2012-02-02 11:53:14 UTC 
well and truly fixed. Jakub thank you for your assistance