diff options
Diffstat (limited to 'src/inp_str.c')
| -rw-r--r-- | src/inp_str.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/inp_str.c b/src/inp_str.c index 7adac05..621679a 100644 --- a/src/inp_str.c +++ b/src/inp_str.c @@ -110,14 +110,14 @@ extract_string (FILE *stream) /* (n-char-sequence) only after a NaN */ if ((nread != 3 - || tolower (str[0]) != 'n' - || tolower (str[1]) != 'a' - || tolower (str[2]) != 'n') + || tolower ((unsigned char) (str[0])) != 'n' + || tolower ((unsigned char) (str[1])) != 'a' + || tolower ((unsigned char) (str[2])) != 'n') && (nread != 5 || str[0] != '@' - || tolower (str[1]) != 'n' - || tolower (str[2]) != 'a' - || tolower (str[3]) != 'n' + || tolower ((unsigned char) (str[1])) != 'n' + || tolower ((unsigned char) (str[2])) != 'a' + || tolower ((unsigned char) (str[3])) != 'n' || str[4] != '@')) { ungetc (c, stream); return str; |