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xasprintf: exit if return value of vsnprintf is invalid

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This commit is contained in:
William Hubbs 2018-02-10 14:09:22 -06:00
parent 4616f8f809
commit 68b9b0bc2a
1 changed files with 4 additions and 7 deletions
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11
src/includes/helpers.h
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@ -158,15 +158,12 @@ _unused static int xasprintf(char **strp, const char *fmt, ...)
va_start(ap, fmt); va_start(ap, fmt);
len = vsnprintf(ret, len + 1, fmt, ap); len = vsnprintf(ret, len + 1, fmt, ap);
va_end(ap); va_end(ap);
if (len >= memlen) {
/* Give up! */
free(ret);
return -1;
}
} }
if (len < 0) { if (len < 0 || len >= memlen) {
/* Give up! */
fprintf(stderr, "xasprintf: unable to format a buffer\n");
free(ret); free(ret);
return -1; exit(1);
} }
*strp = ret; *strp = ret;
return len; return len;