Ticket #3812 (closed bug: invalid)
segfault in maybePerformBlockedException
|Reported by:||duncan||Owned by:|
|Type of failure:||Building GHC failed||Difficulty:|
|Test Case:||Blocked By:|
On the 6.12 stable branch on Sparc Solaris, the buildbot reports that stage2 segfaults.
Using GDB on the core file gives us this backtrace
#0 0x02421dfc in maybePerformBlockedException () #1 0x023fba60 in threadPaused () #2 0x02412a50 in stg_returnToSched () #3 0x02412a50 in stg_returnToSched ()
The same is not happening on the 6.13 head branch. There stage2 works ok. In addition the 6.12.1 release works ok.
The rts/RaiseAsync.c file containing maybePerformBlockedException is currently identical between the stable and head branches.
Sadly, relinking stage2 with -debug does not shed any light on things. We get a segfault with a different backtrace
#0 0x02399580 in integer_cmm_int2Integerzh () #1 0x02397984 in sJ9_info () #2 0x02397984 in sJ9_info ()
Of course since this is a cmm function there is no symbolic debug info.