定位错误：glibc detected :double free or corruption (!prev): 0x08a03b88

参考自：

http://topic.csdn.net/u/20090812/15/43cae1c5-938d-4dac-a5f2-192f262d30f5.html

 

定位free/malloc的位置和参数，可以在对应的.cpp/.h文件中添加：

 

#include <stdio.h>
#include <stdlib.h>



void *
debug_malloc(size_t size, const char *file, int line, const char *func)
{
        void *p;

        p = malloc(size);
        printf("%s:%d:%s:malloc(%ld): p=0x%lx\n",
            file, line, func, size, (unsigned long)p);
        return p;
}

#define malloc(s) debug_malloc(s, __FILE__, __LINE__, __func__)
#define free(p)  do {                                                   \
        printf("%s:%d:%s:free(0x%lx)\n", __FILE__, __LINE__,            \
            __func__, (unsigned long)p);                                \
        free(p);                                                        \
} while (0)

int
main(int argc, char *argv[])
{
        char *p;
        p = malloc(1024);
        free(p);
        return 0;
}

 

延伸一下，如果想在不改动原来代码的情况下跳过这个错误，则可以将上述代码再重新改写一下：

#define malloc(s) debug_malloc(s, __FILE__, __LINE__, __func__)
#define free(p)  do {                                                                                   \
        printf("%s:%d:%s:free(0x%lx)\n", __FILE__, __LINE__,            \
            __func__, (unsigned long)p);                                                       \

        if (p) {                                                                                                     \
          free(p);                                                                                                 \

          p = NULL;                                                                                           \

       }                                                                                                               \
} while (0)