fix undefined behaviour, cast for ctype functions - smu - smu - simple markup (Markdown) processor (fork, fixes + features)
(HTM) git clone git://git.codemadness.org/smu
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---
(DIR) commit 6c46ee93c22968979bf5a6d5024c42247ec6ffeb
(DIR) parent 37f6db9f41353d1f93c9a56f06333f2c5223c7c9
(HTM) Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Tue, 11 May 2021 02:21:20 +0200
fix undefined behaviour, cast for ctype functions
Diffstat:
M smu.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
---
(DIR) diff --git a/smu.c b/smu.c
@@ -166,11 +166,11 @@ dohtml(const char *begin, const char *end, int newblock)
if (nohtml || begin + 2 >= end)
return 0;
p = begin;
- if (p[0] != '<' || !isalpha(p[1]))
+ if (p[0] != '<' || !isalpha((unsigned char)p[1]))
return 0;
p++;
tag = p;
- for (; isalnum(*p) && p < end; p++)
+ for (; isalnum((unsigned char)*p) && p < end; p++)
;
tagend = p;
if (p > end || tag == tagend)
@@ -296,11 +296,11 @@ dolink(const char *begin, const char *end, int newblock)
sep = p[0]; /* separator: can be " or ' */
title = p + 1;
/* strip trailing whitespace */
- for (linkend = p; linkend > link && isspace(*(linkend - 1)); linkend--)
+ for (linkend = p; linkend > link && isspace((unsigned char)*(linkend - 1)); linkend--)
;
for (titleend = title; titleend < q && *titleend != sep; titleend++)
;
- for (p = titleend + 1; p < end && isspace(*p); p++)
+ for (p = titleend + 1; p < end && isspace((unsigned char)*p); p++)
;
/* image dimensions */
if (*p == '=') {
@@ -311,7 +311,7 @@ dolink(const char *begin, const char *end, int newblock)
}
} else {
/* strip trailing whitespace */
- for (linkend = q; linkend > link && isspace(*(linkend - 1)); linkend--)
+ for (linkend = q; linkend > link && isspace((unsigned char)*(linkend - 1)); linkend--)
;
}