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Fixed potential uninitialized memory access (thanks Mathieu!)

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GetRawInputDeviceList() can return a different number of devices than was allocated.

Fixes https://github.com/libsdl-org/SDL/issues/2759
This commit is contained in:
Sam Lantinga
2023-11-04 21:10:10 -07:00
parent 75ea3a8d32
commit b9784feb24
3 changed files with 6 additions and 3 deletions
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3
src/joystick/windows/SDL_windows_gaming_input.c
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@@ -132,7 +132,8 @@ static SDL_bool SDL_IsXInputDevice(Uint16 vendor, Uint16 product)
return SDL_FALSE;
}
if (GetRawInputDeviceList(raw_devices, &raw_device_count, sizeof(RAWINPUTDEVICELIST)) == -1) {
raw_device_count = GetRawInputDeviceList(raw_devices, &raw_device_count, sizeof(RAWINPUTDEVICELIST));
if (raw_device_count == (UINT)-1) {
SDL_free(raw_devices);
raw_devices = NULL;
return SDL_FALSE; /* oh well. */