为什么gdb不会在strcpy上中断？

Question

请查看下面的命令行。我设置了两个断点：一个在strcpy上，另一个在printf上。为什么跳过断点1？

root@ninja:~/Desktop/Programs# gcc -g -o exp exp.c
root@ninja:~/Desktop/Programs# gdb -q exp
Reading symbols from /root/Desktop/Programs/exp...done.
(gdb) list
1   #include <stdio.h>
2   #include <string.h>
3   
4   int main()  {
5       char str_a[20];
6       
7       strcpy(str_a, "Hello world!\n");
8       printf(str_a);
9   }
(gdb) break strcpy
Function "strcpy" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (strcpy) pending.
(gdb) break printf
Breakpoint 2 at 0x8048300
(gdb) run
Starting program: /root/Desktop/Programs/exp 

Breakpoint 2, 0xb7eabf54 in printf () from /lib/i386-linux-gnu/i686/cmov/libc.so.6
(gdb) i r eip
eip            0xb7eabf54   0xb7eabf54 <printf+4>
(gdb) cont
Continuing.
Hello world!
[Inferior 1 (process 3726) exited with code 015]

Answer 1

第一个断点正在等待。

(gdb) break strcpy
Function "strcpy" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (strcpy) pending.                                                 <<here

尝试：(gdb) break 7

7是行号。