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stdlib: Fixed crash on SDL_snprintf("%s", NULL). 

Like other C runtimes, it should probably produce the string "(null)".

This bug probably only affected Windows, as most platforms use their standard
C runtime's snprintf().
This commit is contained in:
Ryan C. Gordon 2017-02-14 02:49:08 -05:00
parent d1eb2d190d
commit c93bca489d
1 changed files with 4 additions and 0 deletions
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4
src/stdlib/SDL_string.c
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@ -1313,6 +1313,10 @@ SDL_PrintString(char *text, size_t maxlen, SDL_FormatInfo *info, const char *str
size_t length = 0; size_t length = 0;
size_t slen; size_t slen;
if (string == NULL) {
string = "(null)";
}
if (info && info->width && (size_t)info->width > SDL_strlen(string)) { if (info && info->width && (size_t)info->width > SDL_strlen(string)) {
char fill = info->pad_zeroes ? '0' : ' '; char fill = info->pad_zeroes ? '0' : ' ';
size_t width = info->width - SDL_strlen(string); size_t width = info->width - SDL_strlen(string);