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This may or may not help:
According to VC++ debugger it always dies with:
Unhandled exception at 0x610d089d in perl.exe: 0xC0000005: Access violation reading location 0x00000004.
According to gdb 0x610d089d = thread.cc:113
So running it through gdb it hits this break point ~ 280 times before it exits:
[gdb]
Breakpoint 1, pthread_setspecific (key=0x19e9e88, value=0x19e9768)
at /netrel/src/cygwin-snapshot-20090711-1/winsup/cygwin/thread.cc:113
113 if ((*object)->magic != magic)
(gdb)
307 ~myfault () __attribute__ ((always_inline)) { _my_tls.reset_fault (sebastian); }
(gdb)
285 andreas._myfault = old_j._myfault;
(gdb)
307 ~myfault () __attribute__ ((always_inline)) { _my_tls.reset_fault (sebastian); }
(gdb)
285 andreas._myfault = old_j._myfault;
(gdb)
286 andreas._myfault_errno = old_j._myfault_errno;
(gdb)
209 int set (const void *value) {TlsSetValue (tls_index, (void *) value); return 0;}
(gdb)
2259 }
(gdb)
0x610b3108 in _sigbe () from /usr/bin/cygwin1.dll
(gdb)
Single stepping until exit from function _sigbe,
which has no line number information.
0x6ce32ea3 in XS_threads_create () from /usr/lib/perl5/5.10/i686-cygwin/auto/threads/threads.dll
(gdb)
Single stepping until exit from function XS_threads_create,
which has no line number information.
Program exited with code 030000000005.
[/gdb]
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