c-decl.c (build_compound_literal): Defer compound literal decls until until file end to emit them only if...

	* c-decl.c (build_compound_literal): Defer compound literal decls
	until until file end to emit them only if they are actually used.

	* gcc.dg/gnu89-init-2.c: New test.

From-SVN: r55645

1 files changed, 11 insertions, 5 deletions

diff --git a/gcc/c-decl.c b/gcc/c-decl.c
index c6e592a..57af611 100644
--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -3669,12 +3669,18 @@ build_compound_literal (type, init)
   if (TREE_STATIC (decl))
     {
       /* This decl needs a name for the assembler output.  We also need
-	 a unique suffix to be added to the name, for which DECL_CONTEXT
-	 must be set.  */
-      DECL_NAME (decl) = get_identifier ("__compound_literal");
-      DECL_CONTEXT (decl) = complit;
+	 a unique suffix to be added to the name.  */
+      char *name;
+      extern int var_labelno;
+
+      ASM_FORMAT_PRIVATE_NAME (name, "__compound_literal", var_labelno);
+      var_labelno++;
+      DECL_NAME (decl) = get_identifier (name);
+      DECL_DEFER_OUTPUT (decl) = 1;
+      DECL_COMDAT (decl) = 1;
+      DECL_ARTIFICIAL (decl) = 1;
+      pushdecl (decl);
       rest_of_decl_compilation (decl, NULL, 1, 0);
-      DECL_CONTEXT (decl) = NULL_TREE;
     }
 
   return complit;