C Valgrind不显示行号

我试图找出我在哪里使用Valgrind对一段内存进行了无效写入。它告诉我们有这样一个问题，也在什么功能中，但不是在什么行中。虽然函数很小，但我希望在Valgrind中显示行号。我在Valgrind的一些输出中看到了这一点，但目前它们没有显示，我想知道为什么

输出如下：

niklas@emerald:~/Arbeitsfläche/spyr/bin/Debug$ valgrind --tool=memcheck --leak-check=full --show-reachable=yes ./spyr
[...]
==4404== Invalid write of size 4
==4404==    at 0x8048849: sp_ParticleBuffer_init (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==    by 0x8048BFC: sp_ParticleSystem_createParticle (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==    by 0x8048691: main (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==  Address 0x422a0a0 is 4 bytes after a block of size 4 alloc'd
==4404==    at 0x402BE68: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==4404==    by 0x8048BC1: sp_ParticleSystem_createParticle (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==    by 0x8048691: main (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404== 
==4404== Invalid write of size 4
==4404==    at 0x8048865: sp_ParticleBuffer_init (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==    by 0x8048BFC: sp_ParticleSystem_createParticle (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==    by 0x8048691: main (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==  Address 0x422a09c is 0 bytes after a block of size 4 alloc'd
==4404==    at 0x402BE68: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==4404==    by 0x8048BC1: sp_ParticleSystem_createParticle (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
==4404==    by 0x8048691: main (in /home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr)
[...]

我看到输出，行号显示在文件名后面的双冒号后面。即

/home/niklas/Arbeitsfläche/spyr/bin/Debug/spyr:23

或类似文件

如何启用此功能

仅供参考，这是sp_ParticleBuffer_init函数

int sp_ParticleBuffer_init(sp_ParticleBuffer* buffer, sp_Uint32 buffer_size, int init_zero) {
    size_t size   = sizeof(sp_Particle) * buffer_size;
    buffer->next  = null;
    buffer->array = (sp_Particle*) malloc(size);
    buffer->alive_count = 0;

    if (!buffer->array) return SPYR_ALLOCFAILED;
    if (init_zero) memset((void*) buffer->array, 0, size);
    return SPYR_NOERR;
}

---

您需要在二进制文件中包含调试信息。如果使用的是

gcc

OMG，请传递

-g

标志。谢谢你，伙计o我使用Code:：Blocks IDE进行编译，并在调试模式下运行编译。本以为它会使用

-g

，但它没有。也许有一天我会让它失效。。我还认为它们已启用，因为我不知道valgrind只显示可执行的名称，而不是文件名。xD但是valgrind在没有调试符号的情况下是如何知道函数名称的呢？是的，在设置中启用了

-g

选项就知道了。：）@NiklasR很高兴知道。对于第二个问题，二进制文件仍然保留一些信息，除非它们被剥离。这些信息足以展开堆栈。谢谢。（；[一些填充字符…]