SDL Wiki
(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)


Get a list of all assertion failures.


const SDL_AssertData * SDL_GetAssertionReport(void);

Return Value

Returns a list of all failed assertions or NULL if the list is empty. This memory should not be modified or freed by the application.


This function gets all assertions triggered since the last call to SDL_ResetAssertionReport(), or the start of the program.

The proper way to examine this data looks something like this:

const SDL_AssertData *item = SDL_GetAssertionReport();
while (item) {
   printf("'%s', %s (%s:%d), triggered %u times, always ignore: %s.\\n",
          item->condition, item->function, item->filename,
          item->linenum, item->trigger_count,
          item->always_ignore ? "yes" : "no");
   item = item->next;


This function is available since SDL 2.0.0.


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