* rational.c (make_patterns): constified.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17040 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 4 deletions

diff --git a/rational.c b/rational.c
index 13487363fb..dc29aa1628 100644
--- a/rational.c
+++ b/rational.c
@@ -1287,10 +1287,12 @@ static VALUE rat_pat, an_e_pat, a_dot_pat, underscores_pat, an_underscore;
 static void
 make_patterns(void)
 {
-    static char rat_pat_source[] = PATTERN;
-    static char an_e_pat_source[] = "[eE]";
-    static char a_dot_pat_source[] = "\\.";
-    static char underscores_pat_source[] = "_+";
+    static char const rat_pat_source[] = PATTERN;
+    static char const an_e_pat_source[] = "[eE]";
+    static char const a_dot_pat_source[] = "\\.";
+    static char const underscores_pat_source[] = "_+";
+
+    if (rat_pat) return;
 
     rat_pat = rb_reg_new(rat_pat_source, sizeof rat_pat_source - 1, 0);
     rb_global_variable(&rat_pat);