#14669: Executable finishing via unhandled exception results in segmentation fault on 32 bit Windows -----------------------------------+---------------------------------- Reporter: sergv | Owner: (none) Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Runtime System | Version: 8.2.1 Resolution: | Keywords: Operating System: Windows | Architecture: x86 Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -----------------------------------+---------------------------------- Comment (by Phyx-): This seems like a genuine segfault to me. {{{ CONTEXT: (.ecxr) eax=02703818 ebx=00527150 ecx=02700040 edx=02702f04 esi=00000001 edi=02702f00 eip=004c4343 esp=0028bcac ebp=02703804 iopl=0 nv up ei pl nz na pe nc cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010206 HW+0xc4343: 004c4343 89442440 mov dword ptr [esp+40h],eax ss:002b:0028bcec=???????? Resetting default scope WARNING: Stack overflow detected. The unwound frames are extracted from outside normal stack bounds. FAULTING_IP: HW+c4343 004c4343 89442440 mov dword ptr [esp+40h],eax EXCEPTION_RECORD: (.exr -1) ExceptionAddress: 004c4343 (HW+0x000c4343) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000001 Parameter[1]: 0028bcec Attempt to write to address 0028bcec DEFAULT_BUCKET_ID: INVALID_STACK_ACCESS }}} Something is writing to `$sp+0x40` which seems to be invalid. Actually the address `sp` itself is pointing to seems to be invalid. Attach the broken binary too please. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14669#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler