Question

挑战是在进入下一课之前清除所有Valgrind错误，但我真的不知道这个程序有什么问题。我想在继续之前知道什么是错的。谢谢，谢谢你的帮助。

#include <stdio.h>

int main()
{
    int age = 10;
    int height = 72;

    printf("I am %d years old.\n", age);
    printf("I am %d inches tall.\n", height);

    return 0;
}

这是valgrind报告：

==41714== Memcheck, a memory error detector
==41714== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==41714== Using Valgrind-3.11.0.SVN and LibVEX; rerun with -h for copyright info
==41714== Command: ./ex3
==41714== 
==41714== Conditional jump or move depends on uninitialised value(s)
==41714==    at 0x1003FBC3F: _platform_memchr$VARIANT$Haswell (in /usr/lib/system/libsystem_platform.dylib)
==41714==    by 0x1001EFBB6: __sfvwrite (in /usr/lib/system/libsystem_c.dylib)
==41714==    by 0x1001FA005: __vfprintf (in /usr/lib/system/libsystem_c.dylib)
==41714==    by 0x10021F9CE: __v2printf (in /usr/lib/system/libsystem_c.dylib)
==41714==    by 0x10021FCA0: __xvprintf (in /usr/lib/system/libsystem_c.dylib)
==41714==    by 0x1001F5B91: vfprintf_l (in /usr/lib/system/libsystem_c.dylib)
==41714==    by 0x1001F39F7: printf (in /usr/lib/system/libsystem_c.dylib)
==41714==    by 0x100000F4D: main (ex3.c:8)
==41714== 
I am 10 years old.
I am 72 inches tall.
==41714== 
==41714== HEAP SUMMARY:
==41714==     in use at exit: 38,816 bytes in 426 blocks
==41714==   total heap usage: 507 allocs, 81 frees, 44,960 bytes allocated
==41714== 
==41714== LEAK SUMMARY:
==41714==    definitely lost: 0 bytes in 0 blocks
==41714==    indirectly lost: 0 bytes in 0 blocks
==41714==      possibly lost: 0 bytes in 0 blocks
==41714==    still reachable: 4,096 bytes in 1 blocks
==41714==         suppressed: 34,720 bytes in 425 blocks
==41714== Rerun with --leak-check=full to see details of leaked memory
==41714== 
==41714== For counts of detected and suppressed errors, rerun with: -v
==41714== Use --track-origins=yes to see where uninitialised values come from
==41714== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)

Answer 1

非常明显没有内存问题。你甚至从来没有malloc或任何东西，所以在这一点上所有的记忆都是在没有你参与的情况下处理的。这一定是Valgrind的一个问题。如果您正在使用OSX，或者如果您有可用的话，可以尝试使用Linux的机器。

Valgrind告诉我这个简单的C程序中有错误和可能的内存泄漏

1 个答案: