Created
January 20, 2012 11:00
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study3gdb
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(gdb) list | |
1 #include <stdio.h> | |
2 #include <string.h> | |
3 | |
4 int main() { | |
5 char str_a[20]; | |
6 char *pointer; | |
7 char *pointer2; | |
8 | |
9 strcpy(str_a, "Hello, world!\n"); | |
10 pointer = str_a; | |
(gdb) | |
11 printf(pointer); | |
12 | |
13 pointer2 = pointer + 2; | |
14 printf(pointer2); | |
15 strcpy(pointer2, "y you guys!\n"); | |
16 printf(pointer); | |
17 } | |
(gdb) break 11 | |
Breakpoint 1 at 0x100000db3: file pointer.c, line 11. | |
(gdb) run | |
Starting program: /Users/kenji/Dropbox/home/work/github/study/pointer | |
Reading symbols for shared libraries +........................ done | |
Breakpoint 1, main () at pointer.c:11 | |
11 printf(pointer); | |
(gdb) x/xw pointer | |
0x7fff5fbff41c: 0x6c6c6548 | |
(gdb) x/s pointer | |
0x7fff5fbff41c: "Hello, world!\n" | |
(gdb) x/xw &pointer | |
0x7fff5fbff410: 0x5fbff41c | |
(gdb) print &pointer | |
$1 = (char **) 0x7fff5fbff410 | |
(gdb) print pointer | |
$2 = 0x7fff5fbff41c |
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