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fixed (v)asprintf when the output length is zero #710

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Merged
adriweb merged 1 commit into from
Feb 27, 2026
Merged

fixed (v)asprintf when the output length is zero #710

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4 changes: 2 additions & 2 deletions src/libc/printf/nanoprintf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,7 @@ int sprintf(char *__restrict buffer, const char *__restrict format, ...)
int vasprintf(char **__restrict p_str, const char *__restrict format, va_list vlist) {
*p_str = NULL;
int str_len = vsnprintf(NULL, 0, format, vlist);
if (str_len <= 0) {
if (str_len < 0) {
return str_len;
}
size_t buf_len = (size_t)str_len + 1;
Expand All @@ -95,7 +95,7 @@ int vasprintf(char **__restrict p_str, const char *__restrict format, va_list vl
return -1;
}
int ret = vsnprintf(buf, buf_len, format, vlist);
if (ret <= 0) {
if (ret < 0) {
free(buf);
return ret;
}
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