Switch to the (correct) casting of char to unsigned char for is*() macros.

diff --git a/sbr/encode_rfc2047.c b/sbr/encode_rfc2047.c
index 40bee57897c43c57fd5e865202c66f4991191256..33ed5d87cdb1b1e9ab8313a6001a0a9b6c747afa 100644 (file)
--- a/sbr/encode_rfc2047.c
+++ b/sbr/encode_rfc2047.c
@@ -64,9 +64,9 @@ encode_rfc2047(const char *name, char **value, int encoding,
      */
 
     for (p = *value; *p != '\0'; p++) {
-       if (isascii((int) *p)) {
+       if (isascii((unsigned char) *p)) {
            asciicount++;
-           if (qpspecial((int) *p))
+           if (qpspecial((unsigned char) *p))
                qpspecialcount++;
        } else
            eightbitcount++;
@@ -230,7 +230,7 @@ field_encode_quoted(const char *name, char **value, const char *charset,
            *q++ = *p;
            ascii--;
        } else {
-           snprintf(q, outlen - (q - output), "=%02X", *((unsigned char *) p));
+           snprintf(q, outlen - (q - output), "=%02X", (unsigned char) *p);
            q += 3;
            column += 2;        /* column already incremented by 1 above */
            encoded--;
@@ -295,11 +295,11 @@ utf8len(const char *p)
     if (*p == '\0')
        return 0;
 
-    if (isascii((int) *p) || (*((unsigned char *) p) & 0xc0) == 0x80)
+    if (isascii((unsigned char) *p) || (((unsigned char) *p) & 0xc0) == 0x80)
        return 0;
 
     p++;
-    while ((*((unsigned char *) p++) & 0xc0) == 0x80)
+    while ((((unsigned char) *p++) & 0xc0) == 0x80)
        len++;
 
     return len;