nobu	2017-12-25 11:42:13 +0900 (Mon, 25 Dec 2017)

  New Revision: 61460

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=61460

  Log:
    prelude.c.tmpl: static literals
    
    * template/prelude.c.tmpl (PRELUDE_STR): make string objects with
      static literals not to copy them.

  Modified files:
    trunk/template/prelude.c.tmpl
Index: template/prelude.c.tmpl
===================================================================
--- template/prelude.c.tmpl	(revision 61459)
+++ template/prelude.c.tmpl	(revision 61460)
@@ -85,7 +85,10 @@ Prelude.new(output && output[/\w+(?=_pre https://github.com/ruby/ruby/blob/trunk/template/prelude.c.tmpl#L85
 % preludes = @preludes.values.sort
 % preludes.each {|i, prelude, lines, sub|
 
-static const char prelude_name<%=i%><%=%>[] = "<%=c_esc(prelude_name(*prelude))%>";
+%   name = prelude_name(*prelude)
+static const struct {
+  char L0[<%=name.size%><%=%>];
+} prelude_name<%=i%><%=%> = {"<%=c_esc(name)%>"};
 static const struct {
 %   size = beg = 0
 %   lines.each_with_index {|(line, comment), n|
@@ -135,6 +138,7 @@ prelude_prefix_path(VALUE self) https://github.com/ruby/ruby/blob/trunk/template/prelude.c.tmpl#L138
 % end
 
 % unless preludes.empty?
+#define PRELUDE_STR(n) rb_usascii_str_new_static(prelude_##n.L0, sizeof(prelude_##n))
 static void
 prelude_eval(VALUE code, VALUE name, int line)
 {
@@ -185,8 +189,8 @@ prelude_require(VALUE self, VALUE nth) https://github.com/ruby/ruby/blob/trunk/template/prelude.c.tmpl#L189
 %   @preludes.each_value do |i, prelude, lines, sub|
 %     if sub
       case <%=i%><%=%>:
-	code = rb_usascii_str_new(prelude_code<%=i%><%=%>.L0, sizeof(prelude_code<%=i%><%=%>));
-	name = rb_usascii_str_new(prelude_name<%=i%><%=%>, sizeof(prelude_name<%=i%><%=%>) - 1);
+	code = PRELUDE_STR(code<%=i%><%=%>);
+	name = PRELUDE_STR(name<%=i%><%=%>);
 	break;
 %     end
 %   end
@@ -218,10 +222,7 @@ Init_<%=@init_name%><%=%>(void) https://github.com/ruby/ruby/blob/trunk/template/prelude.c.tmpl#L222
 % end
 % preludes.each do |i, prelude, lines, sub|
 %   next if sub
-    prelude_eval(
-      rb_usascii_str_new(prelude_code<%=i%><%=%>.L0, sizeof(prelude_code<%=i%><%=%>)),
-      rb_usascii_str_new(prelude_name<%=i%><%=%>, sizeof(prelude_name<%=i%><%=%>) - 1),
-      1);
+    prelude_eval(PRELUDE_STR(code<%=i%><%=%>), PRELUDE_STR(name<%=i%><%=%>), 1);
 % end
 % if @have_sublib
     rb_gc_force_recycle(prelude);

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