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It's possible (likely!) someone could just pass a pointer returned by SDL_GetError for one of these strings, but the message box code has to do a ton of complicated stuff that might _also_ call SDL_SetError, so you could end up with the string having different contents by the time you display it. Just make a copy of the strings unconditionally at the start, so they're safe no matter where they came from. Fixes #10932.
Simple DirectMedia Layer (SDL) Version 3.0
Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware. It is used by video playback software, emulators, and popular games including Valve's award winning catalog and many Humble Bundle games.
More extensive documentation is available in the docs directory, starting with README.md. If you are migrating to SDL 3.0 from SDL 2.0, the changes are extensively documented in README-migration.md.
Enjoy!
Sam Lantinga (slouken@libsdl.org)