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Operating Systems AIX Gdb on a 64 bit executable - cannot access memory Post 302916156 by bagpussnz on Monday 8th of September 2014 12:43:10 AM
Old 09-08-2014
Gdb on a 64 bit executable - cannot access memory

Hi,
Can anyone explain this please.....

A simple test program...

### snip
Code:
#include <stdio.h>

main() {
static int n;

n = 6;

printf("hello %d\n", n);
n=7;
}

### snip

64 bit compile/link....


Code:
$ export OBJECT_MODE=64
$ cc -g -o hello hello.c
$ gdb ./hello
(gdb) b 8
Breakpoint 1 at 0x1000004a4: file hello.c, line 8.
(gdb) r
Starting program: /src/kiwi_7.94_01oct2014/hello 

Breakpoint 1, main () at hello.c:8
8       printf("hello %d\n", n);
(gdb) p n
Cannot access memory at address 0x10000708
(gdb)

If you take off the "static" on line 4, it works fine. Smilie

Also it works fine in 32 bit mode.
Moderator's Comments:
Mod Comment Please use CODE tags when displaying sample input, output, and code segments.

Last edited by Don Cragun; 09-08-2014 at 04:42 PM.. Reason: Add CODE tags.
 

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