Add unsigned char cast to isspace arg

4 files changed, 15 insertions, 7 deletions

diff --git a/lib/libc/gen/getcap.c b/lib/libc/gen/getcap.c
index 90fbd18..d1e33b4 100644
--- a/lib/libc/gen/getcap.c
+++ b/lib/libc/gen/getcap.c
@@ -32,6 +32,8 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
+ * $FreeBSD$
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
@@ -682,7 +684,7 @@ cgetnext(bp, db_array)
 				slash = 0;
 				continue;
 			}
-			if (isspace(*line) ||
+			if (isspace((unsigned char)*line) ||
 			    *line == ':' || *line == '#' || slash) {
 				if (line[len - 2] == '\\')
 					slash = 1;
diff --git a/lib/libc/gen/getnetgrent.c b/lib/libc/gen/getnetgrent.c
index cc33d1f..a26c86c 100644
--- a/lib/libc/gen/getnetgrent.c
+++ b/lib/libc/gen/getnetgrent.c
@@ -32,6 +32,8 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
+ * $FreeBSD$
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
@@ -283,16 +285,16 @@ static int _listmatch(list, group, len)
 	int glen = strlen(group);
 
 	/* skip possible leading whitespace */
-	while(isspace(*ptr))
+	while(isspace((unsigned char)*ptr))
 		ptr++;
 
 	while (ptr < list + len) {
 		cptr = ptr;
-		while(*ptr != ','  && *ptr != '\0' && !isspace(*ptr))
+		while(*ptr != ','  && *ptr != '\0' && !isspace((unsigned char)*ptr))
 			ptr++;
 		if (strncmp(cptr, group, glen) == 0 && glen == (ptr - cptr))
 			return(1);
-		while(*ptr == ','  || isspace(*ptr))
+		while(*ptr == ','  || isspace((unsigned char)*ptr))
 			ptr++;
 	}
 
diff --git a/lib/libc/gen/getttyent.c b/lib/libc/gen/getttyent.c
index ac3e138..bfbe833 100644
--- a/lib/libc/gen/getttyent.c
+++ b/lib/libc/gen/getttyent.c
@@ -29,6 +29,8 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
+ * $FreeBSD$
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
@@ -92,13 +94,13 @@ getttyent()
 			if (!fgets(&line[i], lbsize - i, tf))
 				return (NULL);
 		}
-		while (isspace(*p))
+		while (isspace((unsigned char)*p))
 			++p;
 		if (*p && *p != '#')
 			break;
 	}
 
-#define	scmp(e)	!strncmp(p, e, sizeof(e) - 1) && isspace(p[sizeof(e) - 1])
+#define scmp(e) !strncmp(p, e, sizeof(e) - 1) && isspace((unsigned char)p[sizeof(e) - 1])
 #define	vcmp(e)	!strncmp(p, e, sizeof(e) - 1) && p[sizeof(e) - 1] == '='
 
 	zapchar = 0;
diff --git a/lib/libc/gen/getusershell.c b/lib/libc/gen/getusershell.c
index 408f9f3..be1a77a 100644
--- a/lib/libc/gen/getusershell.c
+++ b/lib/libc/gen/getusershell.c
@@ -29,6 +29,8 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
+ * $FreeBSD$
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
@@ -127,7 +129,7 @@ initshells()
 		if (*cp == '#' || *cp == '\0')
 			continue;
 		*sp++ = cp;
-		while (!isspace(*cp) && *cp != '#' && *cp != '\0')
+		while (!isspace((unsigned char)*cp) && *cp != '#' && *cp != '\0')
 			cp++;
 		*cp++ = '\0';
 	}