Ubuntu
gcc-4.6 package

[armel/armhf] file fails to compile (indefinite loop?)

Bug #903347 reported by Matthias Klose
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Linaro GCC
Won't Fix
Medium
Michael Collison
gcc-4.6 (Ubuntu)
Confirmed
Medium
Unassigned
Precise
Won't Fix
Medium
Unassigned
poco (Ubuntu)
Fix Released
Medium
Unassigned
Precise
Won't Fix
Medium
Unassigned

Bug Description

the compile doesn't terminate, at least after 800min on a beagle board,

g++ -c -O2 doesn't terminate, -O0 does.

both seen with 4.5 and 4.6 branches

Related branches

lp:ubuntu/precise/poco
Revision history for this message
Matthias Klose (doko) wrote :
Revision history for this message
Michael Hope (michaelh1) wrote :

I see similar with gcc-linaro-4.6-2011.11 on a Panda. ~520 MB of memory. I killed it after 50 minutes.

Note that a -O0 build takes 27 s.

Matthias Klose (doko)
Changed in poco (Ubuntu):
importance: Undecided → High
milestone: none → ubuntu-12.04-beta-1
status: New → Confirmed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package poco - 1.3.6p1-1ubuntu3

---------------
poco (1.3.6p1-1ubuntu3) precise; urgency=low

  * Build ODBC and MySQL tests with -O0 to work-around GCC issue
    on ARM. LP: #903347.
 -- Matthias Klose <email address hidden> Mon, 12 Dec 2011 23:44:03 +0100

Changed in poco (Ubuntu Precise):
status: Confirmed → Fix Released
Revision history for this message
Matthias Klose (doko) wrote :

just a work-around for poco, re-opening the poco task, and removing the milestone

Changed in poco (Ubuntu Precise):
importance: High → Medium
milestone: ubuntu-12.04-beta-1 → none
status: Fix Released → Triaged
tags: added: gcc workaround
Revision history for this message
Michael Hope (michaelh1) wrote :

Occurs on cross. The backtrace with an x86_64 host against the gcc-linaro-4.6-2011.12 release is:

#0 0x082c21f1 in update_bb_for_insn_chain ()
#1 0x082c2246 in update_bb_for_insn ()
#2 0x082c1b17 in create_basic_block_structure ()
#3 0x082c1c39 in rtl_create_basic_block ()
#4 0x082b3a6b in create_basic_block ()
#5 0x082c23ba in rtl_split_block ()
#6 0x082b342f in split_block ()
#7 0x089f527b in find_bb_boundaries ()
#8 0x089f5878 in find_many_sub_basic_blocks ()
#9 0x082b2026 in gimple_expand_cfg ()
#10 0x0849347a in execute_one_pass ()
#11 0x08493755 in execute_pass_list ()
#12 0x085b7f62 in tree_rest_of_compilation ()
#13 0x0875887e in cgraph_expand_function ()
#14 0x08758a32 in cgraph_expand_all_functions ()
#15 0x087590a7 in cgraph_optimize ()
#16 0x0875735b in cgraph_finalize_compilation_unit ()
#17 0x08176897 in cp_write_global_declarations ()
#18 0x0855e546 in compile_file ()
#19 0x0856043c in do_compile ()
#20 0x08560587 in toplev_main ()
#21 0x08260c66 in main ()

It seems to be stuck in update_bb_for_insn_chain()

Michael Hope (michaelh1)
Changed in gcc-linaro:
status: New → Triaged
importance: Undecided → Medium
Revision history for this message
Julian Taylor (jtaylor) wrote :

seems to be fixed quantals gcc, both poco arm builds succeeded today without the patch

Changed in poco (Ubuntu):
status: Triaged → Fix Released
Revision history for this message
Michael Collison (michael-collison) wrote :

Will not fix for older releases. Unable to reproduce on linaro 4.8 or 4.9.

Changed in gcc-linaro:
assignee: nobody → Michael Collison (michael-collison)
status: Triaged → Won't Fix
Revision history for this message
Steve Langasek (vorlon) wrote :

The Precise Pangolin has reached end of life, so this bug will not be fixed for that release

Changed in gcc-4.6 (Ubuntu Precise):
status: Confirmed → Won't Fix
Changed in poco (Ubuntu Precise):
status: Triaged → Won't Fix
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.