*****************************************1***************************************
#include
#include
#include
#include

void dump(int signo)
{
char buf[1024];
char cmd[1024];
FILE *fh;

snprintf(buf, sizeof(buf), "/proc/%d/cmdline", getpid());
if(!(fh = fopen(buf, "r")))
exit(0);
if(!fgets(buf, sizeof(buf), fh))
exit(0);
fclose(fh);
if(buf[strlen(buf) - 1] == '\n')
buf[strlen(buf) - 1] = '\0';
snprintf(cmd, sizeof(cmd), "gdb %s %d", buf, getpid());
system(cmd);

exit(0);
}

void
dummy_function (void)
{
unsigned char *ptr = 0x00;
*ptr = 0x00;
}

int
main (void)
{
signal(SIGSEGV, &dump);
dummy_function ();

return 0;
}
~

*****************************************2***********************

#include
#include
#include
#include

/* A dummy function to make the backtrace more interesting. */
void
dummy_function (void)
{
unsigned char *ptr = 0x00;
*ptr = 0x00;
}

void dump(int signo)
{
void *array[10];
size_t size;
char **strings;
size_t i;

size = backtrace (array, 10);
strings = backtrace_symbols (array, size);

printf ("Obtained %zd stack frames.\n", size);

for (i = 0; i < size; i++)
printf ("%s\n", strings[i]);

free (strings);

exit(0);
}

int
main (void)
{
signal(SIGSEGV, &dump);
dummy_function ();

return 0;
}

作者“unsoundboy”