gistfile1.diff

diff -r f91821dec803 src/regexp_nfa.c
--- a/src/regexp_nfa.c	Mon May 20 13:55:21 2013 +0200
+++ b/src/regexp_nfa.c	Mon May 20 23:48:02 2013 +0900
@@ -2664,14 +2662,16 @@
     int		class;
     int		c;
 {
+    int ischar = (1 <= c && c <= 255);
+
     switch (class)
     {
 	case NFA_CLASS_ALNUM:
-	    if (isalnum(c))
+	    if (ischar && isalnum(c))
 		return OK;
 	    break;
 	case NFA_CLASS_ALPHA:
-	    if (isalpha(c))
+	    if (ischar && isalpha(c))
 		return OK;
 	    break;
 	case NFA_CLASS_BLANK:
@@ -2679,7 +2679,7 @@
 		return OK;
 	    break;
 	case NFA_CLASS_CNTRL:
-	    if (iscntrl(c))
+	    if (ischar && iscntrl(c))
 		return OK;
 	    break;
 	case NFA_CLASS_DIGIT:
@@ -2687,7 +2687,7 @@
 		return OK;
 	    break;
 	case NFA_CLASS_GRAPH:
-	    if (isgraph(c))
+	    if (ischar && isgraph(c))
 		return OK;
 	    break;
 	case NFA_CLASS_LOWER:
@@ -2699,7 +2699,7 @@
 		return OK;
 	    break;
 	case NFA_CLASS_PUNCT:
-	    if (ispunct(c))
+	    if (ischar && ispunct(c))
 		return OK;
 	    break;
 	case NFA_CLASS_SPACE: