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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.
18 lines
360 B
C++
18 lines
360 B
C++
#include <SDL.h>
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#include "UtilityClass.h"
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extern "C" char* HELP_number_words(int _t)
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{
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/* C wrapper for UtilityClass::number_words.
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* Caller must VVV_free. */
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std::string str = help.number_words(_t);
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char* buffer = (char*) SDL_malloc(str.size() + 1);
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str.copy(buffer, str.size());
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buffer[str.size()] = '\0';
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return buffer;
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}
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