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-rw-r--r--ares/inet_net_pton.c2
-rw-r--r--ares/setup_once.h2
-rw-r--r--ares/windows_port.c4
3 files changed, 5 insertions, 3 deletions
diff --git a/ares/inet_net_pton.c b/ares/inet_net_pton.c
index 8c78a0b20..49bac69a6 100644
--- a/ares/inet_net_pton.c
+++ b/ares/inet_net_pton.c
@@ -86,7 +86,7 @@ inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size)
dirty = 0;
src++; /* skip x or X. */
while ((ch = *src++) != '\0' && ISXDIGIT(ch)) {
- if (isupper(ch))
+ if (ISUPPER(ch))
ch = tolower(ch);
n = (int)(strchr(xdigits, ch) - xdigits);
if (dirty == 0)
diff --git a/ares/setup_once.h b/ares/setup_once.h
index 6cfa526f7..187f5e1b5 100644
--- a/ares/setup_once.h
+++ b/ares/setup_once.h
@@ -122,6 +122,8 @@
#define ISGRAPH(x) (isgraph((int) ((unsigned char)x)))
#define ISALPHA(x) (isalpha((int) ((unsigned char)x)))
#define ISPRINT(x) (isprint((int) ((unsigned char)x)))
+#define ISUPPER(x) (isupper((int) ((unsigned char)x)))
+#define ISLOWER(x) (islower((int) ((unsigned char)x)))
/*
diff --git a/ares/windows_port.c b/ares/windows_port.c
index 2d842742a..dabe0bccc 100644
--- a/ares/windows_port.c
+++ b/ares/windows_port.c
@@ -41,8 +41,8 @@ ares_strncasecmp(const char *a, const char *b, int n)
int i;
for (i = 0; i < n; i++) {
- int c1 = isupper(a[i]) ? tolower(a[i]) : a[i];
- int c2 = isupper(b[i]) ? tolower(b[i]) : b[i];
+ int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i];
+ int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i];
if (c1 != c2) return c1-c2;
}
return 0;