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freadln.c: set errno to EINVAL if output is NULL

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パチュリー・ノーレッジ
2025-03-02 13:49:16 +03:00
parent 76f0fe22db
commit 2e294a2047
1 changed files with 3 additions and 1 deletions
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4
c-programming/io/freadln.c
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@@ -27,8 +27,10 @@ int freadln(FILE* f, char** output, size_t* length_out) {
* freadln_ERROR: an error occurred (see errno)
*/
if (output == NULL)
if (output == NULL) {
errno = EINVAL;
return freadln_ERROR;
}
// NOTE: if the file is STDIN, flush STDOUT before waiting for input to
// make sure a prompt is displayed