Mail Archives: cygwin/2008/02/15/18:23:02
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.
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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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