作者BIAO (超越自己)
看板C_and_CPP
標題[問題] [Solved]Qt valgrind記憶體洩漏分析請益
時間Tue Jul 25 10:21:57 2017
開發平台(Platform): (Ex: Win10, Linux, ...)
VMWare-Ubuntu 16.04
編譯器(Ex: GCC, clang, VC++...)+目標環境(跟開發平台不同的話需列出)
gcc
問題(Question)：
各位板友大家好，
剛剛隨意開一個新的QDialog專案，沒有新增任何程式碼，
直接於command line輸入「valgrind --tool=memcheck --leak-check=full ./Test」..
視窗程式出現後再將之關閉，分析結果出現一堆錯誤..
--
(上略)
==7722== 3,928 bytes in 1 blocks are definitely lost in loss record 7,377 of
7,430
==7722== at 0x4C2FB55: calloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==7722== by 0x1B032FBD: ??? (in
/usr/lib/x86_64-linux-gnu/dri/vmwgfx_dri.so)
==7722== by 0x1B031727: ??? (in
/usr/lib/x86_64-linux-gnu/dri/vmwgfx_dri.so)
==7722== by 0x1B031DCE: ??? (in
/usr/lib/x86_64-linux-gnu/dri/vmwgfx_dri.so)
==7722== by 0x1AA4F3D5: ??? (in
/usr/lib/x86_64-linux-gnu/dri/vmwgfx_dri.so)
==7722== by 0x1AD0FF9B: ??? (in
/usr/lib/x86_64-linux-gnu/dri/vmwgfx_dri.so)
==7722== by 0x1AD0BC5E: ??? (in
/usr/lib/x86_64-linux-gnu/dri/vmwgfx_dri.so)
==7722== by 0x7119EB2: ??? (in
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0)
==7722== by 0x70F0603: ??? (in
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0)
==7722== by 0x70EC1E6: glXGetFBConfigs (in
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0)
==7722== by 0x70ED5B1: glXChooseFBConfig (in
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0)
==7722== by 0x10211D06: ??? (in
/home/james/Qt/5.9.1/gcc_64/plugins/xcbglintegrations/libqxcb-glx-integration.so)
==7722==
==7722== LEAK SUMMARY:
==7722== definitely lost: 5,036 bytes in 11 blocks
==7722== indirectly lost: 572 bytes in 16 blocks
==7722== possibly lost: 3,808 bytes in 33 blocks
==7722== still reachable: 1,449,425 bytes in 18,802 blocks
==7722== of which reachable via heuristic:
==7722== length64 : 5,336 bytes in 89 blocks
==7722== newarray : 2,160 bytes in 55 blocks
==7722== suppressed: 0 bytes in 0 blocks
==7722== Reachable blocks (those to which a pointer was found) are not shown.
==7722== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==7722==
==7722== For counts of detected and suppressed errors, rerun with: -v
==7722== ERROR SUMMARY: 37 errors from 37 contexts (suppressed: 0 from 0)
--
和估狗教授查到的內容長得不一樣..
http://www.voidcn.com/blog/A8572785/article/p-2225404.html
別人是真的故意有漏才跑出1個錯誤，我的怎麼會...Orz
懇請板上先進不吝賜教，謝謝:)
--
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※ 編輯: BIAO (122.116.193.176), 07/25/2017 11:01:19
直接於Qt Creator分析項目中選擇Memory Analysis即可偵測。
至於命令列的方式為何會這樣，具體不太清楚..
※ 編輯: BIAO (122.116.193.176), 07/26/2017 12:10:00