* string.c (str_strlen): rb_enc_strlen doesn't fail.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sun Feb 17 14:07:24 2008  Tanaka Akira  <akr@fsij.org>
+
+	* string.c (str_strlen): rb_enc_strlen doesn't fail.
+
 Sun Feb 17 13:03:48 2008  Tanaka Akira  <akr@fsij.org>
 
 	* string.c (str_sublen): use rb_enc_strlen.

string.c

@@ -622,7 +622,6 @@ rb_enc_strlen(const char *p, const char *e, rb_encoding *enc)
 static long
 str_strlen(VALUE str, rb_encoding *enc)
 {
-    long len;
     const char *p, *e;
 
     if (single_byte_optimizable(str)) return RSTRING_LEN(str);
@@ -632,7 +631,7 @@ str_strlen(VALUE str, rb_encoding *enc)
 #ifdef NONASCII_MASK
     if (ENC_CODERANGE(str) == ENC_CODERANGE_VALID &&
         enc == rb_utf8_encoding()) {
-        len = 0;
+        long len = 0;
 	if (sizeof(long) * 2 < e - p) {
 	    const unsigned long *s, *t;
 	    const VALUE lowbits = sizeof(unsigned long) - 1;
@@ -661,13 +660,8 @@ str_strlen(VALUE str, rb_encoding *enc)
 	}
 	return len;
     }
-    else
 #endif
-    len = rb_enc_strlen(p, e, enc);
-    if (len < 0) {
-	rb_raise(rb_eArgError, "invalid mbstring sequence");
-    }
-    return len;
+    return rb_enc_strlen(p, e, enc);
 }
 
 /*