diff --git a/src/file/SDL_rwops.c b/src/file/SDL_rwops.c index 444bf4af3d..8d2042cc05 100644 --- a/src/file/SDL_rwops.c +++ b/src/file/SDL_rwops.c @@ -369,6 +369,7 @@ stdio_size(SDL_RWops * context) static Sint64 SDLCALL stdio_seek(SDL_RWops *context, Sint64 offset, int whence) { int stdiowhence; + SDL_bool is_noop; switch (whence) { case RW_SEEK_SET: @@ -390,7 +391,10 @@ static Sint64 SDLCALL stdio_seek(SDL_RWops *context, Sint64 offset, int whence) } #endif - if (fseek(context->hidden.stdio.fp, (fseek_off_t)offset, stdiowhence) == 0) { + /* don't make a possibly-costly API call for the noop seek from SDL_RWtell */ + is_noop = (whence == RW_SEEK_CUR) && (offset == 0); + + if (is_noop || fseek(context->hidden.stdio.fp, (fseek_off_t)offset, stdiowhence) == 0) { Sint64 pos = ftell(context->hidden.stdio.fp); if (pos < 0) { return SDL_SetError("Couldn't get stream offset");