valgrind:获取有意义的回溯
valgrind:获取有意义的回溯
提问于 2018-07-11 19:40:56
在我的Debian/sid系统上，当我通过valgrind运行我的程序时，我得到了一大堆错误。不幸的是，这些错误并没有告诉我，valgrind认为问题出在哪里：
==24268== Use of uninitialised value of size 8
==24268== at 0x51CF257: ??? (in /lib/x86_64-linux-gnu/libc-2.27.so)
==24268== by 0x18D4F9: ??? (in /path/to/app)
==24268== by 0x19A369: ??? (in /path/to/app)
==24268== by 0x19A6F0: ??? (in /path/to/app)
==24268== by 0x19A8C7: ??? (in /path/to/app)
==24268== by 0x19267A: ??? (in /path/to/app)
==24268== by 0x192857: ??? (in /path/to/app)
==24268== by 0x192A20: ??? (in /path/to/app)
==24268== by 0x19ABF6: ??? (in /path/to/app)
==24268== by 0x11E0B9: ??? (in /path/to/app)
==24268== by 0x5155B16: ??? (in /lib/x86_64-linux-gnu/libc-2.27.so)
==24268== Uninitialised value was created by a stack allocation
==24268== at 0x19A2E0: ??? (in /path/to/app)
==24268==
==24268== Use of uninitialised value of size 8
==24268== at 0x51CF440: ??? (in /lib/x86_64-linux-gnu/libc-2.27.so)
==24268== by 0x18D4F9: ??? (in /path/to/app)
==24268== by 0x19A369: ??? (in /path/to/app)
==24268== by 0x19A6F0: ??? (in /path/to/app)
==24268== by 0x19A8C7: ??? (in /path/to/app)
==24268== by 0x19267A: ??? (in /path/to/app)
==24268== by 0x192857: ??? (in /path/to/app)
==24268== by 0x192A20: ??? (in /path/to/app)
==24268== by 0x19ABF6: ??? (in /path/to/app)
==24268== by 0x11E0B9: ??? (in /path/to/app)
==24268== by 0x5155B16: ??? (in /lib/x86_64-linux-gnu/libc-2.27.so)
==24268== Uninitialised value was created by a stack allocation
==24268== at 0x19A2E0: ??? (in /path/to/app)
==24268== 如果没有这个不祥的???，我会想到像<filename>:<linenumber>和/或<functionname>这样的东西。
当然，该程序是用-g编译的，之后没有删除任何调试符号：
$ file app
app: ELF 64-bit LSB pie executable x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, BuildID[sha1]=6a2de5a8779ca1f745cb79999f6e24adc73def7d, with debug_info, not stripped和一些系统信息：
$ dpkg-query -W gcc libc6 valgrind
gcc 4:7.3.0-3
libc6:amd64 2.27-4
libc6:i386 2.27-4
valgrind 1:3.13.0-2+b1
$ valgrind --version
valgrind-3.13.0所以我的问题是:为什么valgrind不能告诉我问题发生在哪里，我该如何修复它？
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-07-13 05:19:29
您可能已经访问了https://bugs.kde.org/show_bug.cgi?id=395682，它包含一些(尚未推送的)补丁建议。
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原文链接：
https://stackoverflow.com/questions/51284615
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