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Prevent crashes if freed objects are passed to SDL API functions

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Instead of using the magic tag in the object, we'll actually keep track of valid objects

Fixes https://github.com/libsdl-org/SDL/issues/9869
Fixes https://github.com/libsdl-org/SDL/issues/9235
This commit is contained in:
Sam Lantinga
2024-06-03 04:09:28 -07:00
parent 57a15933cd
commit b0e93e4e63
28 changed files with 191 additions and 126 deletions
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3
src/SDL_internal.h
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@@ -279,6 +279,8 @@
#define SDL_MAIN_NOIMPL /* don't drag in header-only implementation of SDL_main */
#include <SDL3/SDL_main.h>
#include "SDL_utils_c.h"
/* The internal implementations of these functions have up to nanosecond precision.
We can expose these functions as part of the API if we want to later.
*/
@@ -287,7 +289,6 @@
extern "C" {
#endif
extern Uint32 SDLCALL SDL_GetNextObjectID(void);
extern int SDLCALL SDL_WaitSemaphoreTimeoutNS(SDL_Semaphore *sem, Sint64 timeoutNS);
extern int SDLCALL SDL_WaitConditionTimeoutNS(SDL_Condition *cond, SDL_Mutex *mutex, Sint64 timeoutNS);
extern SDL_bool SDLCALL SDL_WaitEventTimeoutNS(SDL_Event *event, Sint64 timeoutNS);