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From:	Chris Faylor <cgf AT cygnus DOT com>
Date:	Thu, 22 Jun 2000 16:05:22 -0400
To:	cygwin AT sourceware DOT cygnus DOT com
Subject:	Re: gdb 20000610 crashes
Message-ID:	<20000622160522.D3865@cygnus.com>
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References:	<4 DOT 3 DOT 2 DOT 7 DOT 0 DOT 20000622144003 DOT 00b3f978 AT courriel DOT polymtl DOT ca>
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In-Reply-To:	<4.3.2.7.0.20000622144003.00b3f978@courriel.polymtl.ca>; from andre.bleau@courriel.polymtl.ca on Thu, Jun 22, 2000 at 02:50:37PM -0400

On Thu, Jun 22, 2000 at 02:50:37PM -0400, Andre Bleau wrote:
>When the program run in the last version of gdb generates an exception gdb 
>itself crashes. Example:
>
>/* Bogus C example to show gdb crashing */
>#include <stdio.h>
>int main()
>{
>char* null = NULL;
>printf("null[0]=%c\n", null[0]);
>return 0;
>}
>
>compiled with: gcc -g crash.c -o crash
>
>Running the program in gdb crashes gdb itself when the printf line is executed:
>
>* Source Display *:gdb.exe - Application Error
>The instruction at "0x77f8aa57"referenced memory at "0x00000034". The 
>memory could not be "read".
>
>gdb --version shows:
>GNU gdb 4.17.gnat.3.12p

That would indicate that you're not running anything close to the latest
version of gdb.  I don't know why this doesn't show up in your cygcheck
environment below unless you either ran the cygcheck command from a different
path or you somehow have the gdb command aliased.

Didn't the "gdb 4.17.gnat.3.12p" give you a clue here?

cgf

>This is with the latest cygwin release under Windows 2000. Output from
>cygcheck -s gdb:
>
>Found: C:\cygwin\bin\gdb.exe
>Found: c:\GNAT\BIN\gdb.exe
>C:\cygwin\bin\gdb.exe
>   C:\cygwin\bin\cygitcl30.dll
>     C:\cygwin\bin\cygtcl80.dll
>       C:\cygwin\bin\cygwin1.dll
>         C:\WINNT\System32\KERNEL32.dll
>           C:\WINNT\System32\NTDLL.DLL
>       C:\WINNT\System32\USER32.dll
>         C:\WINNT\System32\GDI32.DLL
>   C:\cygwin\bin\cygitk30.dll
>     C:\cygwin\bin\cygtk80.dll
>       C:\WINNT\System32\COMDLG32.DLL
>         C:\WINNT\System32\SHLWAPI.DLL
>           C:\WINNT\System32\ADVAPI32.DLL
>             C:\WINNT\System32\RPCRT4.DLL
>         C:\WINNT\System32\COMCTL32.DLL
>         C:\WINNT\System32\SHELL32.DLL
>         C:\WINNT\System32\MSVCRT.DLL
>   C:\cygwin\bin\tix4180.dll
>
>
>Cygnus Win95/NT Configuration Diagnostics
>Current System Time: Thu Jun 22 14:27:41 2000
>
>WinNT Ver 5.0 build 2195
>
>Path:   /usr/bin
>         /usr/local/bin
>         /usr/bin
>         /c/GNAT/BIN
>         /c/WINNT/SYSTEM32
>         /c/WINNT
>         /c/WINNT/SYSTEM32/WBEM
>
>SysDir: C:\WINNT\System32
>WinDir: C:\WINNT
>
>MAKE_MODE = `unix'
>PWD = `/d/Software/src'
>
>Use `-r' to scan registry
>
>a:  fd           N/A    N/A
>c:  hd  NTFS    4094Mb  76% CP CS UN PA FC     System
>d:  hd  NTFS    5679Mb  13% CP CS UN PA FC     Data
>e:  cd           N/A    N/A
>z:  net NTFS   13515Mb   5% CP CS UN PA FC
>
>C:\cygwin\bin  /usr/bin  user    binmode
>C:\cygwin\lib  /usr/lib  user    binmode
>C:\cygwin  /        user    binmode
>d:\temp  /tmp     system  binmode
>c:    /c       user    textmode
>d:    /d       user    textmode
>
>Found: C:\cygwin\bin\bash.exe
>Found: C:\cygwin\bin\cat.exe
>Found: C:\cygwin\bin\cpp.exe
>Found: C:\cygwin\bin\find.exe
>Found: C:\cygwin\bin\gcc.exe
>Found: c:\GNAT\BIN\gcc.exe
>Found: C:\cygwin\bin\gdb.exe
>Found: c:\GNAT\BIN\gdb.exe
>Found: C:\cygwin\bin\ld.exe
>Found: c:\GNAT\BIN\ld.exe
>Found: C:\cygwin\bin\ls.exe
>Found: C:\cygwin\bin\make.exe
>Found: c:\GNAT\BIN\make.exe
>Found: C:\cygwin\bin\sh.exe
>
>    83k 2000/06/11 C:\cygwin\bin\cygitcl30.dll
>    35k 2000/06/11 C:\cygwin\bin\cygitk30.dll
>   402k 2000/06/11 C:\cygwin\bin\cygtcl80.dll
>   474k 1999/09/14 C:\cygwin\bin\cygtcl80_20000415.dll
>     5k 2000/06/11 C:\cygwin\bin\cygtclpip80.dll
>    10k 2000/06/11 C:\cygwin\bin\cygtclreg80.dll
>   639k 2000/06/11 C:\cygwin\bin\cygtk80.dll
>   575k 2000/06/07 C:\cygwin\bin\cygwin1.dll
>    83k 2000/06/11 C:\cygwin\bin\cygitcl30.dll
>    35k 2000/06/11 C:\cygwin\bin\cygitk30.dll
>   402k 2000/06/11 C:\cygwin\bin\cygtcl80.dll
>   474k 1999/09/14 C:\cygwin\bin\cygtcl80_20000415.dll
>     5k 2000/06/11 C:\cygwin\bin\cygtclpip80.dll
>    10k 2000/06/11 C:\cygwin\bin\cygtclreg80.dll
>   639k 2000/06/11 C:\cygwin\bin\cygtk80.dll
>   575k 2000/06/07 C:\cygwin\bin\cygwin1.dll
>Use -h to see help about each section

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