* dir.c (char_casecmp): fix: return 0 if either of characters is NUL.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@18257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 2 deletions

diff --git a/dir.c b/dir.c
index 905140ac4..3dfeb54b6 100644
--- a/dir.c
+++ b/dir.c
@@ -89,8 +89,7 @@ char_casecmp(const char *p1, const char *p2, rb_encoding *enc, const int nocase)
     const char *p1end, *p2end;
     int c1, c2;
 
-    if (!*p1) return *p1;
-    if (!*p2) return -*p2;
+    if (!*p1 || !*p2) return !!*p1 - !!*p2;
     p1end = p1 + strlen(p1);
     p2end = p2 + strlen(p2);
     c1 = rb_enc_codepoint(p1, p1end, enc);