我在用
p12user@ubuntu:~$ uname -a
Linux ubuntu 2.6.32-40-generic #87-Ubuntu SMP Tue Mar 6 00:56:56 UTC 2012 x86_64 GNU/Linux
p12user@ubuntu:~$ gdb -v
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
p12user@ubuntu:~/programming$ gcc --version
gcc (Ubuntu 4.4.3-4ubuntu5.1) 4.4.3
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
在调试这个程序在gdb，其编译为gcc -g program.c ：
#include <stdio.h>
int main()
{
int condition1 = 1;
if(condition1)
{
if(!condition1)
{
printf("The control shouldn't come here.\n");
}
}
else
{
printf("in else\n");
}
return 0;
}
该行为是：
Breakpoint 1, main () at program.c:4
4 int condition1 = 1;
(gdb) n
5 if(condition1)
(gdb) n
7 if(!condition1)
(gdb) n
9 printf("The control shouldn't come here.\n");
(gdb) n
16 return 0;
(gdb) n
17 }
(gdb)
第9行的行为是在gdb意外。 但是，打印语句只在gdb显示，但不执行。 如果我把一个匹配ELSE（有一些打印语句）与内-IF则不会发生这种情况，如果也匹配ELSE为外-IF被删除则不会发生这种情况。 我失去了一些小事吗？
