sshd fork failure

[marco atzeri <marco dot atzeri at gmail dot com>]

Hi,
tracing the sshd process on latest cygwin shapshot ,
I see that the fork is failing due to exception C0000005

    1       1 [main] sshd (4644) 
**********************************************
 5921    5922 [main] sshd (4644) Program name: 
E:\cygwin\usr\sbin\sshd.exe (windows pid 4644)
   30    5952 [main] sshd (4644) OS version:   Windows NT-6.1
   25    5977 [main] sshd (4644) 
**********************************************
  636    6613 [main] sshd (4644) sigprocmask: 0 = sigprocmask (0, 
0x6123D428, 0x610FBB30)
  122    6735 [main] sshd 4644 child_copy: cygheap - hp 0x20C low 
0x612708D0, high 0x61277640, res 1
 1368    8103 [main] sshd 4644 child_copy: done
--- Process 4644, exception C0000005 at 61137277



$ addr2line.exe 61137277 -e /usr/bin/cygwin1.dll
/netrel/src/cygwin-snapshot-20120827-1/newlib/libc/stdlib/mbtowc_r.c:323

that should be:

 ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];

inside __utf8_mbtowc .
It looks a strange place for a fork failure, but it is used in
winsup/cygwin/cygheap.cc so it could make sense.

Any suggestion how to follow/debug the child portion of fork ?

Marco

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