re PR tree-optimization/39272 (-D_FORTIFY_SOURCE=2 no longer warns with new glibc headers)

2009-03-03  Richard Guenther  <rguenther@suse.de>

	PR middle-end/39272
	* tree.c (tree_nonartificial_location): New function.
	* tree.h (tree_nonartificial_location): Declare.
	* builtins.c (expand_builtin_memory_chk): Provide location
	of the call location for artificial function pieces.
	(maybe_emit_chk_warning): Likewise.
	(maybe_emit_sprintf_chk_warning): Likewise.
	(maybe_emit_free_warning): Likewise.
	* expr.c (expand_expr_real_1): Likewise.

From-SVN: r144573

1 files changed, 36 insertions, 0 deletions

diff --git a/gcc/tree.c b/gcc/tree.c
index 423c868..d0117a0 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -9071,6 +9071,42 @@ block_nonartificial_location (tree block)
   return ret;
 }
 
+
+/* If EXP is inlined from an __attribute__((__artificial__))
+   function, return the location of the original call expression.  */
+
+location_t
+tree_nonartificial_location (tree exp)
+{
+  tree block = TREE_BLOCK (exp);
+
+  while (block
+	 && TREE_CODE (block) == BLOCK
+	 && BLOCK_ABSTRACT_ORIGIN (block))
+    {
+      tree ao = BLOCK_ABSTRACT_ORIGIN (block);
+
+      do
+	{
+	  if (TREE_CODE (ao) == FUNCTION_DECL
+	      && DECL_DECLARED_INLINE_P (ao)
+	      && lookup_attribute ("artificial", DECL_ATTRIBUTES (ao)))
+	    return BLOCK_SOURCE_LOCATION (block);
+	  else if (TREE_CODE (ao) == BLOCK
+		   && BLOCK_SUPERCONTEXT (ao) != ao)
+	    ao = BLOCK_SUPERCONTEXT (ao);
+	  else
+	    break;
+	}
+      while (ao);
+
+      block = BLOCK_SUPERCONTEXT (block);
+    }
+
+  return EXPR_LOCATION (exp);
+}
+
+
 /* These are the hash table functions for the hash table of OPTIMIZATION_NODEq
    nodes.  */