Re: Issue with GDB under Cygwin and XP

[Ray Hurst <rhurst2 at cox dot net>]

Here is a run of a HellowWorld program (listed below in gdb).

Can someone tell me why the variables a, b, c are not the correct 
values. I dumped the local stack and the variables are correct on the stack.

I'm running Windows XP under cygwin.
gcc 4.2.3

The gdb run is as follows:

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"...
(gdb) list ,20
11      #include <stdio.h>
12      #include <stdlib.h>
13
14      int main(void) {
15              int a,b,c;
16              a = 10;
17              b = 20;
18              c = 30;
19              puts("!!!Hello World!!!"); /* prints !!!Hello World!!! */
20              printf("\na = %d,  b = %d,  c = %d\n", a,b,c);
(gdb) b main
Breakpoint 1 at 0x401050: file ../src/HelloWorld.c, line 14.
(gdb) run
Starting program: 
/cygdrive/c/projects/Eclipse/WorkSpaces/cdt/HelloWorld/Debug/H
elloWorld.exe
Loaded symbols for /cygdrive/c/WINDOWS/system32/ntdll.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/kernel32.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/cygwin1.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/advapi32.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/rpcrt4.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/secur32.dll

Breakpoint 1, main () at ../src/HelloWorld.c:14
14      int main(void) {
(gdb) n
16              a = 10;
(gdb) n
17              b = 20;
(gdb) n
18              c = 30;
(gdb) n
19              puts("!!!Hello World!!!"); /* prints !!!Hello World!!! */
(gdb) print a
$1 = 1627408910
(gdb) print b
$2 = 1627408208
(gdb) print c
$3 = 264
(gdb)

Ray


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