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Hi, On a fresh install of Cygwin, running gdb with any executable produces a stackdump from gdb. Here's a sample session: $ gdb /bin/test GNU gdb 6.5.50.20060706-cvs (cygwin-special) Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-pc-cygwin"...(no debugging symbols found) (gdb) run Starting program: /bin/test.exe Loaded symbols for /cygdrive/c/WINDOWS/system32/ntdll.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/kernel32.dll Loaded symbols for /usr/bin/cygwin1.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/advapi32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/rpcrt4.dll Loaded symbols for /usr/bin/cygintl-8.dll Loaded symbols for /usr/bin/cygiconv-2.dll Segmentation fault (core dumped) $ cat gdb.exe.stackdump Exception: STATUS_ACCESS_VIOLATION at eip=0054FF55 eax=00000000 ebx=00000000 ecx=0000006B edx=0000002F esi=00000000 edi=10259B30 ebp=0022C148 esp=0022C0C0 program=C:\cygwin\bin\gdb.exe, pid 4296, thread main cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023 Stack trace: Frame Function Args 0022C148 0054FF55 (00000000, 006162AA, 00000008, 0022C17C) 0022C518 00461BE0 (00000001, 00000000, 00000000, 0000C6B0) 0022C648 00461F10 (00000000, 00000000, 10113C98, 00000000) 0022C698 00411C6B (00461EB0, 00000000, 00616290, 00000006) 0022C738 00463A77 (0022C7A0, FFFFFFFF, 00000000, 00000000) 0022C808 004271A5 (00000000, 00000000, 00000000, 0000C6B0) 0022C868 00427335 (FFFFFFFF, 00000000, 00000000, 00000001) 0022C898 00412232 (00000000, 00000001, 00000001, 00000000) 0022C8D8 004023C7 (100B0393, 00000001, 0022C918, 100ED570) 0022C918 00421C84 (100B0390, 100FB738, 0022C930, 00000000) 0022C948 0042221B (100ED570, 00000000, 00696ED4, 0000000C) 0022C968 005430E5 (0048E6D0, 00000002, 0022C998, 0048E76A) 0022C978 004215FB (00000000, 00000000, 00000000, 0022C900) 0022C998 0048E76A (00000000, 00000000, 0022C9B8, 0048E145) 0022C9B8 0048E1D2 (100E5440, 00000002, FFFFFFFF, 0022C9D8) 0022C9F8 0048EA95 (00000000, 00000000, 100FB718, 00000000) End of stack trace (more stack frames may be present) $ I don't have the debugging symbols for gdb, and am unable to build one right now, but all of the addresses seem to be in the application space. The output of "cygcheck -svr" is attached. I vaguely recall such issues being redirected to the insight list, but I suspect this is a Cygwin problem, not a gdb one... I can build my own Cygwin, but without a working gdb it would be hard to debug this problem. Any ideas? Igor -- http://cs.nyu.edu/~pechtcha/ |\ _,,,---,,_ pechtcha@cs.nyu.edu | igor@watson.ibm.com ZZZzz /,`.-'`' -. ;-;;,_ Igor Peshansky, Ph.D. (name changed!) |,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow! Freedom is just another word for "nothing left to lose"... -- Janis Joplin
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