#include <stdio.h>
#include <signal.h>
static volatile sig_atomic_t being_debugged = 1;
static void int3_handler(int signo) { being_debugged = 0; }
int main()
{
signal(SIGTRAP, int3_handler);
__asm__ __volatile__("int3");
if (being_debugged) {
puts("No, I don't want to serve you.");
while (1) {
/* endless loop */ ;
}
}
puts("Yes, real routines go here.");
return 0;
}
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当在gdb内部/外部运行时,上面将给出不同的输出,因为gdb捕获sigtrap信号.
如何让我的程序在gdb中表现相同?