Bug 912857

Summary: ICE when building arm kernel with gcc 4.8
Product: [Fedora] Fedora Reporter: Peter Robinson <pbrobinson>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED UPSTREAM QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
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Version: rawhideCC: gansalmon, itamar, jakub, jonathan, kernel-maint, law, madhu.chinakonda
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Last Closed: 2013-02-20 09:46:08 UTC Type: Bug
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output from failed build none

Description Peter Robinson 2013-02-19 21:03:43 UTC 
http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=1450976

The same kernel builds fine on F18 as a scrtch build@
http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=1450976

It looks like this might be related 
gcc.gnu.org/bugzilla/show_bug.cgi?id=55198
Comment 1 Peter Robinson 2013-02-19 21:38:34 UTC 
Created attachment 699677 [details]
output from failed build
Comment 2 Jakub Jelinek 2013-02-20 09:46:08 UTC 
Guess garbage in, garbage out, I don't see how
 __raw_readw (__typesafe_io (0xfee00000 + ((0x1F1) & ((resource_size_t) 0xfffff))))
could ever work at least on strict alignment machines, 0x1F1 clearly isn't 2-byte aligned.

That said, tracking this upstream, gcc shouldn't ICE even on garbage.