[PATCH:libXfont 2/2] Fix is*() usage.

[Thomas Klausner]

The argument must be an unsigned char or -1; in these cases
we know it's not -1 so cast it to unsigned char.
Fixes
warning: array subscript is of type 'char' [-Wchar-subscripts]

Signed-off-by: Thomas Klausner <wiz at NetBSD.org>
---
 src/FreeType/ftfuncs.c |  6 +++---
 src/FreeType/xttcap.c  |  2 +-
 src/bitmap/bdfutils.c  |  4 ++--
 src/util/fontxlfd.c    | 10 +++++-----
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/FreeType/ftfuncs.c b/src/FreeType/ftfuncs.c
index a4969d1..c440fde 100644
--- a/src/FreeType/ftfuncs.c
+++ b/src/FreeType/ftfuncs.c
@@ -2061,7 +2061,7 @@ restrict_code_range_by_str(int count,unsigned short *refFirstCol,
         long val;
 
         /* skip comma and/or space */
-        while (',' == *p || isspace(*p))
+        while (',' == *p || isspace((unsigned char)*p))
             p++;
 
         /* begin point */
@@ -2079,7 +2079,7 @@ restrict_code_range_by_str(int count,unsigned short *refFirstCol,
         }
 
         /* skip space */
-        while (isspace(*p))
+        while (isspace((unsigned char)*p))
             p++;
 
         if (',' != *p && '\0' != *p) {
@@ -2092,7 +2092,7 @@ restrict_code_range_by_str(int count,unsigned short *refFirstCol,
                 break;
 
             /* skip space */
-            while (isspace(*p))
+            while (isspace((unsigned char)*p))
                 p++;
 
             val = strtol(p, (char **)&q, 0);
diff --git a/src/FreeType/xttcap.c b/src/FreeType/xttcap.c
index cee752e..e30e0f9 100644
--- a/src/FreeType/xttcap.c
+++ b/src/FreeType/xttcap.c
@@ -632,7 +632,7 @@ SPropRecValList_add_by_font_cap(SDynPropRecValList *pThisList,
                 }
                 break;
             }
-            if ( !isdigit(*p) )
+            if ( !isdigit((unsigned char)*p) )
                 break;
         }
     }
diff --git a/src/bitmap/bdfutils.c b/src/bitmap/bdfutils.c
index 288148b..438d197 100644
--- a/src/bitmap/bdfutils.c
+++ b/src/bitmap/bdfutils.c
@@ -207,11 +207,11 @@ bdfIsInteger(char *str)
     char        c;
 
     c = *str++;
-    if (!(isdigit(c) || c == '-' || c == '+'))
+    if (!(isdigit((unsigned char)c) || c == '-' || c == '+'))
 	return (FALSE);
 
     while ((c = *str++))
-	if (!isdigit(c))
+	if (!isdigit((unsigned char)c))
 	    return (FALSE);
 
     return (TRUE);
diff --git a/src/util/fontxlfd.c b/src/util/fontxlfd.c
index 974128e..99a3679 100644
--- a/src/util/fontxlfd.c
+++ b/src/util/fontxlfd.c
@@ -145,9 +145,9 @@ xlfd_double_to_text(double value, char *buffer, int space_required)
     if (value == 0.0) exponent = 0;
 
     /* Figure out how many digits are significant */
-    while (p1 >= buffer && (!isdigit(*p1) || *p1 == '0')) p1--;
+    while (p1 >= buffer && (!isdigit((unsigned char)*p1) || *p1 == '0')) p1--;
     ndigits = 0;
-    while (p1 >= buffer) if (isdigit(*p1--)) ndigits++;
+    while (p1 >= buffer) if (isdigit((unsigned char)*p1--)) ndigits++;
 
     /* Figure out notation to use */
     if (exponent >= XLFD_NDIGITS || ndigits - exponent > XLFD_NDIGITS + 1)
@@ -278,7 +278,7 @@ GetMatrix(char *ptr, FontScalablePtr vals, int which)
 	matrix = vals->point_matrix;
     else return (char *)0;
 
-    while (isspace(*ptr)) ptr++;
+    while (isspace((unsigned char)*ptr)) ptr++;
     if (*ptr == '[')
     {
 	/* This is a matrix containing real numbers.  It would be nice
@@ -292,13 +292,13 @@ GetMatrix(char *ptr, FontScalablePtr vals, int which)
 	    (ptr = readreal(ptr, matrix + 2)) &&
 	    (ptr = readreal(ptr, matrix + 3)))
 	{
-	    while (isspace(*ptr)) ptr++;
+	    while (isspace((unsigned char)*ptr)) ptr++;
 	    if (*ptr != ']')
 		ptr = (char *)0;
 	    else
 	    {
 		ptr++;
-		while (isspace(*ptr)) ptr++;
+		while (isspace((unsigned char)*ptr)) ptr++;
 		if (*ptr == '-')
 		{
 		    if (which == POINTSIZE_MASK)
-- 
2.3.0