(expand_return): Call emit_queue in ignore-the-value case.

(expand_end_bindings): Check DECL_IN_SYSTEM_HEADER for unused warnings. From-SVN: r1889

(expand_return): Call emit_queue in ignore-the-value case.
(expand_end_bindings): Check DECL_IN_SYSTEM_HEADER for unused warnings. From-SVN: r1889
7e70e7c5 · Richard Stallman · ceedd25e · 7e70e7c5
Commit 7e70e7c5 authored Aug 18, 1992 by Richard Stallman
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gcc/stmt.c
+3 -1

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--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -2185,6 +2185,7 @@ expand_return (retval)
  if (TREE_CODE (TREE_TYPE (TREE_TYPE (current_function_decl))) == VOID_TYPE)
    {
      expand_expr (retval, NULL_RTX, VOIDmode, 0);
+      emit_queue ();
      expand_null_return ();
      return;
    }
@@ -2476,7 +2477,8 @@ expand_end_bindings (vars, mark_ends, dont_jump_in)

  if (warn_unused)
    for (decl = vars; decl; decl = TREE_CHAIN (decl))
-      if (! TREE_USED (decl) && TREE_CODE (decl) == VAR_DECL)
+      if (! TREE_USED (decl) && TREE_CODE (decl) == VAR_DECL
+	  && ! DECL_IN_SYSTEM_HEADER (decl))
 	warning_with_decl (decl, "unused variable `%s'");

  /* Mark the beginning and end of the scope if requested.  */