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Introduce formal policy for APIs that return strings.

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This declares that any `const char *` returned from SDL is owned by SDL, and
promises to be valid _at least_ until the next time the event queue runs, or
SDL_Quit() is called, even if the thing that owns the string gets destroyed
or changed before then.

This is noted in the headers as "the SDL_GetStringRule", so this will both be
greppable to find a detailed explaination in docs/README-strings.md and
wikiheaders will automatically turn it into a link we can point at the
appropriate documentation.

Fixes #9902.

(and several FIXMEs, both known and yet-undocumented.)
This commit is contained in:
Ryan C. Gordon 2024-06-01 22:05:21 -04:00
parent b1f3682216
commit e23257307e
51 changed files with 262 additions and 123 deletions
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2
src/dynapi/SDL_dynapi_procs.h
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@ -213,7 +213,7 @@ SDL_DYNAPI_PROC(SDL_AssertionHandler,SDL_GetAssertionHandler,(void **a),(a),retu
SDL_DYNAPI_PROC(const SDL_AssertData*,SDL_GetAssertionReport,(void),(),return)
SDL_DYNAPI_PROC(SDL_AudioDeviceID*,SDL_GetAudioCaptureDevices,(int *a),(a),return)
SDL_DYNAPI_PROC(int,SDL_GetAudioDeviceFormat,(SDL_AudioDeviceID a, SDL_AudioSpec *b, int *c),(a,b,c),return)
SDL_DYNAPI_PROC(char*,SDL_GetAudioDeviceName,(SDL_AudioDeviceID a),(a),return)
SDL_DYNAPI_PROC(const char*,SDL_GetAudioDeviceName,(SDL_AudioDeviceID a),(a),return)
SDL_DYNAPI_PROC(const char*,SDL_GetAudioDriver,(int a),(a),return)
SDL_DYNAPI_PROC(SDL_AudioDeviceID*,SDL_GetAudioOutputDevices,(int *a),(a),return)
SDL_DYNAPI_PROC(int,SDL_GetAudioStreamAvailable,(SDL_AudioStream *a),(a),return)