Closed Bug 836054 Opened 7 years ago Closed 7 years ago
DMD: Handle stack entries with PC of 0x0
jst saw DMD crash with this stack trace: #0 0x00007f9e633f9d8b in raise () from /lib64/libpthread.so.0 #1 0x00007f9e5e41435b in nsProfileLock::FatalSignalHandler (signo=11, info=<value optimized out>, context=<value optimized out>) at /home/jst/fast/work/tip/fb-rel/toolkit/profile/nsProfileLock.cpp:180 #2 <signal handler called> #3 0x00007f9e6360b1a4 in mozilla::dmd::LocationService::WriteLocation (this= 0x7f9da595b000, aWriter=..., aPc=0x0) at /home/jst/fast/work/tip/mozilla/memory/replace/dmd/DMD.cpp:703 #4 0x00007f9e6360b45d in mozilla::dmd::StackTrace::Print (this= 0x7f9e322e6e20, aWriter=..., aLocService=0x7f9da595b000) I think the aPc=0x0 is the problem; WriteLocation has this assertion near the top: MOZ_ASSERT(aPc); // important, because null represents an empty entry Looks like I'll need a different value to represent an empty entry. Maybe (void*)-1 will do.
Summary: Handle stack entries with PC of 0x0 → DMD: Handle stack entries with PC of 0x0
Attachment #707994 - Flags: review?(justin.lebar+bug) → review+
Status: ASSIGNED → RESOLVED
Closed: 7 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla21
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