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Fixes made in response to running a static code analyzer under MS Windows.

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Most of these are probably harmless, but the changes to SDL_immdevice.c and SDL_pixels.c appear to have fixed genuine bugs.

SDL_audiocvt.c: By separating the calculation of the divisor, I got rid of the suspicion that dividing a double by an integer led to loss of precision.
SDL_immdevice.c: Added a missing test, one that could have otherwise led to dereferencing a null pointer.
SDL_events.c, SDL_gamecontroller.c, SDL_joystick.c, SDL_malloc.c, SDL_video.c: Made it clear the return values weren't used.
SDL_hidapi_shield.c: The size is zero, so nothing bad would have happened, but the SDL_memset() was still being given an address outside of the array's range.
SDL_dinputjoystick.c: Initialize local data, just in case IDirectInputDevice8_GetProperty() isn't guaranteed to write to it.
SDL_render_sw.c: drawstate.viewport could be null (as seen on line 691).
SDL.c: SDL_MostSignificantBitIndex32() could return -1, though I don't know if you want to cope with that (what I did) or SDL_assert() that it can't happen.
SDL_hints.c: Replaced boolean tests on pointer values with comparisons to NULL.
SDL_pixels.c: Looks like the switch is genuinely missing a break!
SDL_rect_impl.h: The MacOS static checker pointed out issues with the X comparisons that were handled by assertions; I added assertions for the Y comparisons.
SDL_yuv.c, SDL_windowskeyboard.c, SDL_windowswindow.c: Checked error-result returns.
This commit is contained in:
ulatekh
2022-10-05 19:26:09 -07:00
committed by Ryan C. Gordon
parent 7ebdae5dc9
commit ec58a817ef
17 changed files with 63 additions and 41 deletions
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12
src/events/SDL_events.c
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@@ -147,7 +147,7 @@ SDL_AutoUpdateSensorsChanged(void *userdata, const char *name, const char *oldVa
static void SDLCALL
SDL_PollSentinelChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
{
SDL_EventState(SDL_POLLSENTINEL, SDL_GetStringBoolean(hint, SDL_TRUE) ? SDL_ENABLE : SDL_DISABLE);
(void)SDL_EventState(SDL_POLLSENTINEL, SDL_GetStringBoolean(hint, SDL_TRUE) ? SDL_ENABLE : SDL_DISABLE);
}
/**
@@ -566,12 +566,12 @@ SDL_StartEventLoop(void)
#endif /* !SDL_THREADS_DISABLED */
/* Process most event types */
SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE);
SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE);
SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
(void)SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE);
(void)SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE);
(void)SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
#if 0 /* Leave these events enabled so apps can respond to items being dragged onto them at startup */
SDL_EventState(SDL_DROPFILE, SDL_DISABLE);
SDL_EventState(SDL_DROPTEXT, SDL_DISABLE);
(void)SDL_EventState(SDL_DROPFILE, SDL_DISABLE);
(void)SDL_EventState(SDL_DROPTEXT, SDL_DISABLE);
#endif
SDL_EventQ.active = SDL_TRUE;