Ubuntu
gcc-4.5 package

ICE in redirect_jump, at jump.c:1443

Bug #748138 reported by Matthias Klose
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Linaro GCC
Fix Released
Medium
Chung-Lin Tang
Linaro GCC 4.5-2011.06-0
gcc-4.5 (Ubuntu)
Fix Released
Medium
Unassigned

Bug Description

Binary package hint: gcc-4.5

falconlp ftbfs on i386 with -O2 and -O3, works with -O0, -O1, -Os

works with the FSF branch.

$ g++ -g -O2 -c src_lexer.ii
/scratch/packages/tmp/falconpl-0.9.6.6/engine/src_lexer.cpp: In member function 'void Falcon::SrcLexer::reset()':
/scratch/packages/tmp/falconpl-0.9.6.6/engine/src_lexer.cpp:90:1: internal compiler error: in redirect_jump, at jump.c:1443
Please submit a full bug report,
with preprocessed source if appropriate.

Related branches

lp:~cltang/gcc-linaro/lp-748138-cfgrtl-fix-4_5
Ulrich Weigand (community): Approve
Diff: 52 lines (+17/-10)
2 files modified
ChangeLog.linaro (+9/-0)
gcc/cfgrtl.c (+8/-10)
Revision history for this message
Matthias Klose (doko) wrote :
Changed in gcc-4.5 (Ubuntu):
importance: Undecided → Medium
status: New → Confirmed
Revision history for this message
Michael Hope (michaelh1) wrote :

Confirmed in gcc-linaro-4.5-2011.03-0:

michaelh@ursa3:~/linaro/bugs$ /tools/toolchains/gcc-linaro-4.5-2011.03-0-armv7l-maverick-cbuild71-carina7-cortexa8r1/bin/g++ -O2 -S src_lexer.ii
/scratch/packages/tmp/falconpl-0.9.6.6/engine/src_lexer.cpp: In member function 'void Falcon::SrcLexer::reset()':
/scratch/packages/tmp/falconpl-0.9.6.6/engine/src_lexer.cpp:90:1: internal compiler error: in redirect_jump, at jump.c:1443

Does not occur in gcc-4.5.2 or gcc-4.6.0. Still occurs with -fno-shrink-wrap.

Changed in gcc-linaro:
status: New → Triaged
importance: Undecided → Medium
Revision history for this message
Ramana Radhakrishnan (ramana) wrote :

A reduced testcase is now attached.

cheers
Ramana

Revision history for this message
Michael Hope (michaelh1) wrote :

I went through the historical binary builds. This fault did not exist in r99447 but does in r99458. Note that shrink-wrap is introduced in that range.

Revision history for this message
Michael Hope (michaelh1) wrote :

G++ no longer asserts with the proposed fix:

michaelh@ursa1:~/linaro/bugs$ /scratch/michaelh/toolchains/gcc-linaro-4.5+bzr99510~cltang~lp-748138-cfgrtl-fix-4_5-armv7l-maverick-cbuild114-ursa4-cortexa9r1/bin/g++ -O2 -S src_lexer.ii

michaelh@ursa1:~/linaro/bugs$ /scratch/michaelh/toolchains/gcc-linaro-4.5+bzr99510~cltang~lp-748138-cfgrtl-fix-4_5-armv7l-maverick-cbuild114-ursa4-cortexa9r1/bin/g++ -O2 -S min.ii

Changed in gcc-linaro:
status: Triaged → In Progress
assignee: nobody → Chung-Lin Tang (cltang)
Michael Hope (michaelh1)
Changed in gcc-linaro:
milestone: none → 4.5-2011.06-0
Revision history for this message
Michael Hope (michaelh1) wrote :

Note that this also fails in gcc-linaro-4.5-2011.05. It does not fail in gcc-4.5.3, gcc-4.6.0, or gcc-linaro-4.6-2011.05.

Michael Hope (michaelh1)
Changed in gcc-linaro:
status: In Progress → Fix Committed
Michael Hope (michaelh1)
Changed in gcc-linaro:
status: Fix Committed → Fix Released
Revision history for this message
Matthias Klose (doko) wrote :

fixed in oneiric

Changed in gcc-4.5 (Ubuntu):
status: Confirmed → Fix Released
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