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[PATCH] qemu-keymap: Silence memory leak warning from Clang's sanitizer

From: Thomas Huth
Subject: [PATCH] qemu-keymap: Silence memory leak warning from Clang's sanitizer
Date: Tue, 21 Feb 2023 13:24:40 +0100

When compiling QEMU with "--enable-sanitizers --enable-xkbcommon --cc=clang"
there is a memory leak warning when running qemu-keymap:

 $ ./qemu-keymap -f pc-bios/keymaps/de -l de

 ==610321==ERROR: LeakSanitizer: detected memory leaks

 Direct leak of 136 byte(s) in 1 object(s) allocated from:
     #0 0x5642830d0820 in __interceptor_calloc.part.11 asan_malloc_linux.cpp.o
     #1 0x7f31873b8d2b in xkb_state_new (/lib64/libxkbcommon.so.0+0x1dd2b) 
(BuildId: dd32581e2248833243f3f646324ae9b98469f025)

 SUMMARY: AddressSanitizer: 136 byte(s) leaked in 1 allocation(s).

It can be silenced by properly releasing the "state" again
after it has been used.

Signed-off-by: Thomas Huth <thuth@redhat.com>
 qemu-keymap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qemu-keymap.c b/qemu-keymap.c
index 4095b654a6..229866e004 100644
--- a/qemu-keymap.c
+++ b/qemu-keymap.c
@@ -226,6 +226,8 @@ int main(int argc, char *argv[])
     state = xkb_state_new(map);
     xkb_keymap_key_for_each(map, walk_map, state);
+    xkb_state_unref(state);
+    state = NULL;
     /* add quirks */

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