diff options
Diffstat (limited to 'tests/smtp.gperf')
| -rw-r--r-- | tests/smtp.gperf | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tests/smtp.gperf b/tests/smtp.gperf index 33137b9..5d26f5e 100644 --- a/tests/smtp.gperf +++ b/tests/smtp.gperf @@ -183,10 +183,10 @@ main (argc, argv) if (len) { for (k = 0; k < len; k++) - if (isupper (s[k])) - s[k] = tolower (s[k]); - else if (islower (s[k])) - s[k] = toupper (s[k]); + if (isupper ((unsigned char) s[k])) + s[k] = tolower ((unsigned char) s[k]); + else if (islower ((unsigned char) s[k])) + s[k] = toupper ((unsigned char) s[k]); hs = header_entry (s, len); if (!(hs && my_case_strcmp (hs->field_name, s) == 0)) { |