http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52179
Iain Sandoe <iains at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-02-23 Ever Confirmed|0 |1 --- Comment #13 from Iain Sandoe <iains at gcc dot gnu.org> 2012-02-23 15:16:57 UTC --- (In reply to comment #9) > (In reply to comment #8) > but often the -m64 results show the failure... > > WARNING: program timed out. > FAIL: boehm-gc.c/thread_leak_test.c -O2 execution test > Running > /sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20120222/boehm-gc/testsuite/boehm-gc.lib/lib.exp This (random) fail is also seen on x86-d9/d10 - so not something related to the pie shifts. I've not had time to investigate - but suspect it is related to operating close to stack limits -- if you try reducing the number of recursions (like PPC does) does this go away?