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Fix negative index in r_snprintf

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This commit is contained in:
Sergi Àlvarez i Capilla 2021-10-05 10:26:22 +02:00
parent d443347958
commit e8f724e2c7
1 changed files with 7 additions and 2 deletions
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9
libr/util/str.c
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@ -3686,8 +3686,13 @@ R_API char *r_str_from_ut64(ut64 val) {
R_API int r_snprintf(char *string, int len, const char *fmt, ...) {
va_list ap;
va_start (ap, fmt);
int ret = vsnprintf (string, len, fmt, ap);
string[len - 1] = 0;
int ret = 0;
if (len > 0) {
ret = vsnprintf (string, len, fmt, ap);
string[len - 1] = 0;
} else {
*string = 0;
}
va_end (ap);
return ret;
}