Question

我有一个C代码OpenGL程序，可以在我的ubuntu机器上编译和运行。但是当我在另一个Linux上编译并运行它时会导致分段错误。我已经使用valgrind来查看问题所在，这里只是输出的一小部分：

==21294== LEAK SUMMARY:
==21294==    definitely lost: 72 bytes in 1 blocks
==21294==    indirectly lost: 0 bytes in 0 blocks
==21294==      possibly lost: 0 bytes in 0 blocks
==21294==    still reachable: 191,932 bytes in 1,397 blocks
==21294==         suppressed: 0 bytes in 0 blocks
==21294== 
==21294== ERROR SUMMARY: 8 errors from 3 contexts (suppressed: 0 from 0)
==21294== 
==21294== 1 errors in context 1 of 3:
==21294== Syscall param ioctl(generic) points to uninitialised byte(s)
==21294==    at 0x5936F07: ioctl (syscall-template.S:84)
==21294==    by 0x7C0E0E7: drmIoctl (in /usr/lib/x86_64-linux-gnu/libdrm.so.2.4.0)
==21294==    by 0x7C10DDE: drmCommandWriteRead (in /usr/lib/x86_64-linux-gnu/libdrm.so.2.4.0)
==21294==    by 0xABF2DA0: nouveau_object_mthd (in /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2.0.0)
==21294==    by 0xABF3535: nouveau_device_new (in /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2.0.0)
==21294==    by 0xA0B9690: nouveau_drm_screen_create (in /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so)
==21294==    by 0x9C7FD15: ??? (in /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so)
==21294==    by 0x9F6C59B: ??? (in /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so)
==21294==    by 0x9F67BD2: ??? (in /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so)
==21294==    by 0x4E80AA2: ??? (in /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0)
==21294==    by 0x4E589C3: ??? (in /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0)
==21294==    by 0x4E53F00: glXQueryVersion (in /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0)

valgrind的完整输出文件长15614行。我还在学习它，但我可以使用帮助来阅读我正在查看的内容以及如何更正我的代码。这也是我在这个网站上的第一篇文章，所以任何关于这个问题和一般发布的信息都将不胜感激。

Answer 1

分段错误与内存泄漏无关。要修复分段错误，您应该阅读并修复Valgrind报告的错误，而不是内存泄漏。根据输出，Valgrind发现了8个错误：

==21294== ERROR SUMMARY: 8 errors from 3 contexts (suppressed: 0 from 0)

在此处查看Valgrind错误与内存泄漏之间的区别：
Error summary in Valgrind output?

试图从valgrind读取泄漏摘要 - 程序导致我的PC上的分段故障，而不是另一个

1 个答案: