使valgrind在未初始化的值上快速失败

#include <stdio.h>

int main() {
    int x;
    printf("Value of x: %d\n", x);  // 未初始化的变量 x
    return 0;
}

gcc -g -o example example.c

valgrind --track-origins=yes --error-exitcode=1 ./example

sh复制==12345== Memcheck, a memory error detector
==12345== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==12345== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==12345== Command: ./example
==12345== 
==12345== Use of uninitialised value of size 4
==12345==    at 0x1091A3: main (example.c:5)
==12345==  Uninitialised value was created by a stack allocation
==12345==    at 0x109190: main (example.c:3)
==12345== 
==12345== 
==12345== Process terminating with default action of signal 1 (SIGSEGV)
==12345==  Access not within mapped region at address 0x0
==12345==    at 0x1091A3: main (example.c:5)
==12345==  If you believe this happened as a result of a stack
==12345==  overflow in your program's main thread (unlikely but
==12345==  possible), you can try to increase the size of the
==12345==  main thread stack using the --main-stacksize= flag.
==12345==  The main thread stack size used in this run was 8388608.
==12345== 
==12345== HEAP SUMMARY:
==12345==     in use at exit: 0 bytes in 0 blocks
==12345==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==12345== 
==12345== All heap blocks were freed -- no leaks are possible
==12345== 
==12345== For lists of detected and suppressed errors, rerun with: -s
==12345== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)