停止apport service；
dgb编译程序
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运行测试程序
运行gdb还原现场
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>/*** $ sudo service apport stop* $ gcc -ggdb3 -std=c99 -Wall -Wextra -pedantic -o main.out coredump.c* $ ulimit -c unlimit* $ ./main.out* $ gdb ./main.out core*/int myfunc(int i) {*(int*)(NULL) = i; /* line 7 */return i - 1;
}int main(int argc, char **argv) {/* Setup some memory. */char data_ptr[] = "string in data segment";char *mmap_ptr;char *text_ptr = "string in text segment";(void)argv;mmap_ptr = (char *)malloc(sizeof(data_ptr) + 1);strcpy(mmap_ptr, data_ptr);mmap_ptr[10] = 'm';mmap_ptr[11] = 'm';mmap_ptr[12] = 'a';mmap_ptr[13] = 'p';printf("text addr: %p\n", text_ptr);printf("data addr: %p\n", data_ptr);printf("mmap addr: %p\n", mmap_ptr);/* Call a function to prepare a stack trace. */return myfunc(argc);
}
