【发布时间】：2023-03-25 08:33:01
【问题描述】：
如果我最终做错了什么，我很抱歉。 好的，我的问题如下：
我刚刚编写了一些非常简单的代码，但是当您查看 Valgrind 错误输出时，它只会让我感到困惑。
代码：
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
int num1 = 100;
double num2 = 1.2;
printf("Number 1 one is: %d.\n Number two is: %f.\n", num1, num2);
return 0;
}
Valgrind 错误报告：
$ valgrind --leak-check=full ./yaq
==50642== Memcheck, a memory error detector
==50642== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==50642== Using Valgrind-3.11.0.SVN and LibVEX; rerun with -h for copyright info
==50642== Command: ./yaq
==50642==
--50642-- ./yaq:
--50642-- dSYM directory has wrong UUID; consider using --dsymutil=yes
==50642== Conditional jump or move depends on uninitialised value(s)
==50642== at 0x1003FCC3F: _platform_memchr$VARIANT$Haswell (in /usr/lib/system/libsystem_platform.dylib)
==50642== by 0x1001F0B96: __sfvwrite (in /usr/lib/system/libsystem_c.dylib)
==50642== by 0x1001FAFE5: __vfprintf (in /usr/lib/system/libsystem_c.dylib)
==50642== by 0x1002209AE: __v2printf (in /usr/lib/system/libsystem_c.dylib)
==50642== by 0x100220C80: __xvprintf (in /usr/lib/system/libsystem_c.dylib)
==50642== by 0x1001F6B71: vfprintf_l (in /usr/lib/system/libsystem_c.dylib)
==50642== by 0x1001F49D7: printf (in /usr/lib/system/libsystem_c.dylib)
==50642== by 0x100000F32: main (in ./yaq)
==50642==
Number 1 one is: 100.
Number two is: 1.200000.
==50642==
==50642== HEAP SUMMARY:
==50642== in use at exit: 38,673 bytes in 427 blocks
==50642== total heap usage: 510 allocs, 83 frees, 44,945 bytes.
==50642== To see them, rerun with: --leak-check=full --show-leak- kinds=all
==50642==
==50642== For counts of detected and suppressed errors, rerun with: -v
==50642== Use --track-origins=yes to see where uninitialised values come from
==50642== ERROR SUMMARY: 3 errors from 1 contexts (suppressed: 17 from 17)
为什么会显示 3 个错误？
提前致谢。 最好的问候
【问题讨论】：
-
你知道你的 libc 是否没有错误吗？例如，libc 可能会 malloc() 一些内存并且永远不会释放，因为 main() 末尾的 exit() 确实会终止进程。
-
我不知道如何解决它。