gcc编译参数relro问题

9命怪猫

relro.c 代码如下：

1. #include <stdio.h>
   
2. 
   
3. void *const foo = &stdout;
   
4. 
   
5. int main (void)
   
6. {
   
7.   *(void **) &foo = &stderr;
   
8.   return 0;
   
9. }
   

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gcc -pie -fPIE -g -o no-relro relro.c

应该是编译不通过，但是可以过，而且
# ./no-relro
Segmentation fault

bruceteen

应该是编译不通过
----- give me your reason

9命怪猫

这是一个测试用例，期望结果是编译不通过...
之前没说清楚，抱歉！

用例是这样的：

1. # Good case
   
2. /usr/bin/gcc -pie -fPIE -g  -Wl,-z,relro -o relro relro.c || \
   
3.     exit_error "Failed to build test program"
   
4. ./relro
   
5. [ ! $? -eq 139 ] && exit_fail "Test is expected to crash with segmentation fault"
   
6. 
   
7. # Bad case
   
8. /usr/bin/gcc -pie -fPIE -g -o no-relro relro.c || \
   
9.     exit_error "Failed to build test program"
   
10. ./no-relro || exit_fail "Test is expected to pass without RELRO"
    

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