Opened 11 years ago

Last modified 11 years ago

#11227 closed defect

gcc-4.6.0 optimization bug with cliquer-1.2.p7.spkg — at Version 3

Reported by: Mariah Lennox Owned by: Mariah Lennox
Priority: blocker Milestone: sage-4.7
Component: packages: standard Keywords: cliquer spkg
Cc: Merged in:
Authors: Reviewers:
Report Upstream: Fixed upstream, but not in a stable release. Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Status badges

Description (last modified by David Kirkby)

sage-4.7.alpha5 built with gcc-4.6.0 fails test

sage -t -long -force_lib "devel/sage/sage/graphs/graph_generators.py" # Time out

For other gcc 4.6.0 specific problems see #11216

Change History (3)

comment:1 Changed 11 years ago by Mariah Lennox

Milestone: sage-4.7.1
Owner: changed from tbd to Mariah Lennox

The following code triggers the problem (code does not return):

sage: g = graphs.BidiakisCube();
sage: g.clique_number()

If cliquer-1.2.p7.spkg is rebuilt with -O1 rather than -O2, then the problem goes away.

comment:2 Changed 11 years ago by Mariah Lennox

If src/reorder.c is built with -O1 rather than -O2, then the problem goes away.

comment:3 Changed 11 years ago by David Kirkby

Description: modified (diff)

On what platform is this problem?

Dave

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