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win: fix memory leak in fill_win 

Fixes the following memory leak reported by valgrind:

    1,056 bytes in 24 blocks are definitely lost in loss record 83 of 111
       at 0x483577F: malloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
       by 0x49DB0DD: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
       by 0x49D8FB4: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
       by 0x49DA63E: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
       by 0x49DA751: xcb_wait_for_reply (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
       by 0x11FD5B: fill_win (win.c:1165)
       by 0x117CE6: handle_new_windows (compton.c:1266)
       by 0x118065: _draw_callback (compton.c:1333)
       by 0x1184D0: draw_callback (compton.c:1426)
       by 0x49BF292: ev_invoke_pending (in /usr/lib/x86_64-linux-gnu/libev.so.4.0.0)
       by 0x49C3344: ev_run (in /usr/lib/x86_64-linux-gnu/libev.so.4.0.0)
       by 0x11AD65: session_run (compton.c:2226)

This one out of multiple code paths forgot to free the structure. Yeah,
manual memory management is hard. :-)
This commit is contained in:
Tomas Janousek 2019-09-20 10:13:07 +02:00
parent fcec9fcd39
commit 23421b2ff8
1 changed files with 1 additions and 0 deletions
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src/win.c
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@ -1176,6 +1176,7 @@ struct win *fill_win(session_t *ps, struct win *w) {
if (a->_class == XCB_WINDOW_CLASS_INPUT_ONLY) {
// No need to manage this window, but we still keep it on the window stack
w->managed = false;
free(a);
return w;
}