mirror of
https://github.com/TerryCavanagh/VVVVVV.git
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a926ce9851
This replaces all calls to SDL_free with a new macro, VVV_free, that nulls the pointer afterwards. This mitigates any use-after-frees and also completely eliminates double-frees. The same is done for any function to free specific objects such as SDL_FreeSurface, with the VVV_freefunc macro. No exceptions for any of these calls, even if the pointer is discarded or zeroed afterwards anyway. Better safe than sorry. This is a macro rather than a function that takes in a pointer-to-pointer because such a function would have type issues that require casting and that's just not safe. Even though SDL_free and other SDL functions already check for NULL, the macro has a NULL check for other functions that don't. For example, FAudioVoice_DestroyVoice does not check for NULL. FILESYSTEM_freeMemory has been axed in favor of VVV_free because it functionally does the same thing except for `unsigned char*` only.
21 lines
310 B
C
21 lines
310 B
C
#include <SDL_stdinc.h>
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#include "Alloc.h"
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/* Handle third-party dependencies' needs here */
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void* lodepng_malloc(size_t size)
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{
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return SDL_malloc(size);
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}
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void* lodepng_realloc(void* ptr, size_t new_size)
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{
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return SDL_realloc(ptr, new_size);
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}
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void lodepng_free(void* ptr)
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{
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VVV_free(ptr);
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}
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