diff options
Diffstat (limited to 'argp/argp-help.c')
| -rw-r--r-- | argp/argp-help.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/argp/argp-help.c b/argp/argp-help.c index f417e1294c..5844d5ba1c 100644 --- a/argp/argp-help.c +++ b/argp/argp-help.c @@ -780,13 +780,11 @@ hol_entry_cmp (const struct hol_entry *entry1, first, but as they're not displayed, it doesn't matter where they are. */ { - char first1 = short1 ? short1 : long1 ? *long1 : 0; - char first2 = short2 ? short2 : long2 ? *long2 : 0; -#ifdef _tolower - int lower_cmp = _tolower (first1) - _tolower (first2); -#else + unsigned char first1 = short1 ? short1 : long1 ? *long1 : 0; + unsigned char first2 = short2 ? short2 : long2 ? *long2 : 0; + /* Use tolower, not _tolower, since the latter has undefined + behaviour for characters that are not uppercase letters. */ int lower_cmp = tolower (first1) - tolower (first2); -#endif /* Compare ignoring case, except when the options are both the same letter, in which case lower-case always comes first. */ return lower_cmp ? lower_cmp : first2 - first1; |