Yes, this one is failing for me too. Probably related to the recent object unload patch for http://ghc.haskell.org/trac/ghc/ticket/8039 Excerpts from Ryan Newton's message of Fri Aug 30 21:51:24 -0700 2013:
That test builds an executable named 'linker_unload' which segfaults for me. Valgrind says this:
==42800== Invalid read of size 8 ==42800== at 0x66945F: checkUnload (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x657F7A: GarbageCollect (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x651790: scheduleDoGC (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x6518B4: performGC_ (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x403BB1: main (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== Address 0x5bfdd20 is 80 bytes inside a block of size 120 free'd ==42800== at 0x4C273F0: free (vg_replace_malloc.c:446) ==42800== by 0x66945E: checkUnload (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x657F7A: GarbageCollect (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x651790: scheduleDoGC (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x6518B4: performGC_ (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload) ==42800== by 0x403BB1: main (in /home/beehive/ryan_scratch/validate14/testsuite/tests/rts/linker_unload)
This went the same across a couple different independent checkouts.
-Ryan