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Bug 1924

Summary: memory leak? Mix_FreeChunk not freeing memory properly
Product: SDL_mixer Reporter: Adrian <adrian.wielgosik>
Component: miscAssignee: Sam Lantinga <slouken>
Status: ASSIGNED --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: unspecified   
Hardware: x86   
OS: Windows 7   

Description Adrian 2013-06-20 16:58:07 UTC 
(Using stable (not hg) versions of SDL2 and SDL2_mixer)

Code used to check:
https://gist.github.com/adrian17/8f3c3f434732e19c5bf7

According to Task Manager, memory usage doesn't reduce after Mix_FreeChunk is called. Used in loop, results in a constant leaking of memory.

Citing caedes from IRC:

[22:40] <caedes__> http://hg.libsdl.org/SDL/file/c7346a060a7d/src/audio/SDL_wave.c#l603
[22:41] <caedes__> and Mix_LoadWav uses the SDL_wave stuff for .wav
[22:42] <caedes__> but doesn't use SDL_FreeWAV
[22:42] <caedes__> maybe it has something to do with that, maybe not
[22:42] <caedes__> (do DLLs have their own heaps or something?)
[22:44] <caedes__> http://hg.libsdl.org/SDL_mixer/file/030181ff9f59/mixer.c#l748 and http://hg.libsdl.org/SDL_mixer/file/030181ff9f59/mixer.c#l603 are the relevant parts in SDL_mixer
Comment 1 Sam Lantinga 2013-06-29 18:12:29 UTC 
I haven't had a chance to try this on Windows yet, but for what it's worth, it works fine on Mac OS X, running forever without leaking memory.