[Mono-dev] Exceptions-x86.c r140989 causes exceptions.exe test to crash on Mac x86

[Geoff Norton]

Fixed in r141069

Thanks

-g

On 1-Sep-09, at 2:44 PM, Tom Philpot wrote:

> While trying to rebuild the latest Mono SVN, I noticed that the
> exceptions.exe was crashing during "make check". Digging a little  
> deeper I
> reverted the latest change to exceptions-x86.c (svn update -r PREV
> mono/mono/mini/exceptions-x86.c) and everything passed.
>
> The crash from the test case using r of exceptions-x86.c is as  
> follows:
>
> Test run:
> image=/Users/tom.philpot/External/mono-project/mono/mono/mini/ 
> exceptions.exe
> , opts=
> Stacktrace:
>
>  at (wrapper managed-to-native)
> object.__icall_wrapper___emul_fconv_to_ovf_u8 (double) <0x00004>
>  at (wrapper managed-to-native)
> object.__icall_wrapper___emul_fconv_to_ovf_u8 (double) <0xffffffff>
>  at Tests.test_0_byte_cast () <0x00318>
>
> Native stacktrace:
>
>    0   mono                                0x0008e0da
> mono_handle_native_sigsegv + 266
>    1   mono                                0x00006eca
> mono_sigsegv_signal_handler + 298
>    2   libSystem.B.dylib                   0x949402bb _sigtramp + 43
>    3   ???                                 0xffffffff 0x0 + 4294967295
>
> Debug info from gdb:
>
> warning: Trying to remove a section from the ordered section list  
> that did
> not exist at 0x29c000.
> Attaching to process 53961.
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries
> ............................................................................
> ........ done
> 0x948f7f95 in read$UNIX2003 ()
>  4 process 53961 thread 0x2703  0x948d42c2 in semaphore_wait_trap ()
>  3 process 53961 thread 0x2303  0x948db46e in __semwait_signal ()
>  2 process 53961 thread 0x1103  0x948d4286 in mach_msg_trap ()
> * 1 process 53961 thread 0x717  0x948f7f95 in read$UNIX2003 ()
>
> Thread 4 (process 53961 thread 0x2703):
> #0  0x948d42c2 in semaphore_wait_trap ()
> #1  0x000f8013 in finalizer_thread (unused=0x0) at gc.c:1014
> #2  0x001851ba in start_wrapper (data=0x60f4a0) at threads.c:657
> #3  0x001b6225 in thread_start_routine (args=0x5dc434) at wthreads.c: 
> 286
> #4  0x001d5483 in GC_start_routine (arg=0x593f60) at  
> pthread_support.c:1390
> #5  0x94905155 in _pthread_start ()
> #6  0x94905012 in thread_start ()
>
> Thread 3 (process 53961 thread 0x2303):
> #0  0x948db46e in __semwait_signal ()
> #1  0x948db2ef in nanosleep$UNIX2003 ()
> #2  0x00199b10 in collection_thread (unused=0x0) at collection.c:34
> #3  0x94905155 in _pthread_start ()
> #4  0x94905012 in thread_start ()
>
> Thread 2 (process 53961 thread 0x1103):
> #0  0x948d4286 in mach_msg_trap ()
> #1  0x948dba7c in mach_msg ()
> #2  0x000c0dc4 in mach_exception_thread (arg=0x0) at mini-darwin.c:131
> #3  0x001d5483 in GC_start_routine (arg=0x593f60) at  
> pthread_support.c:1390
> #4  0x94905155 in _pthread_start ()
> #5  0x94905012 in thread_start ()
>
> Thread 1 (process 53961 thread 0x717):
> #0  0x948f7f95 in read$UNIX2003 ()
> #1  0x0008e1cb in mono_handle_native_sigsegv (signal=11,  
> ctx=0xbfffec38) at
> mini-exceptions.c:1560
> #2  0x00006eca in mono_sigsegv_signal_handler (_dummy=11,  
> info=0xbfffebf8,
> context=0xbfffec38) at mini.c:4583
> #3  <signal handler called>
> #4  0x0005a05e in mono_fconv_ovf_u8 (v=0) at jit-icalls.c:860
> #5  0x016a23e7 in ?? ()
> #6  0x016a1c49 in ?? ()
> #7  0x00067d7d in mini_regression [inlined] () at driver.c:427
> #8  0x00067d7d in mono_main (argc=16, argv=0xbffff0ec) at driver.c:484
> #9  0x00001ff6 in start ()
>
> =================================================================
> Got a SIGSEGV while executing native code. This usually indicates
> a fatal error in the mono runtime or one of the native libraries
> used by your application.
> =================================================================
>
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