re PR middle-end/20635 (ICE in cgraph_mark_reachable_node)

	PR middle-end/20635
	* varasm.c (mark_decl_referenced): Do not mark extern inline functions
	as needed.

	* compile/gcc.c-torture/compile/20050328-1.c: New testcase made
	by Jakub Jelinek.

From-SVN: r97133

gcc/ChangeLog

 2005-03-28  Jan Hubicka  <jh@suse.cz>
 
+	PR middle-end/20635
+	* varasm.c (mark_decl_referenced): Do not mark extern inline functions
+	as needed.
+
 	* tree-inline.c (estimate_num_insns_1): Use declaration to discover argument
 	types where possible.
 

gcc/testsuite/ChangeLog

+2005-03-28  Jan Hubicka  <jh@suse.cz>
+
+	PR middle-end/20635
+	* compile/gcc.c-torture/compile/20050328-1.c: New testcase made
+	by Jakub Jelinek.
+
 2005-03-27  Dorit Naishlos  <dorit@il.ibm.com>
 
 	PR tree-optimization/20626

gcc/testsuite/gcc.c-torture/compile/20050328-1.c

+void fn1 (void *);
+void fn2 (void *);
+void foo (void);
+void bar (void);
+
+extern inline void *
+baz (void)
+{
+  return 0;
+}
+
+void
+foo (void)
+{
+  fn1 (baz ());
+  fn2 (baz ());
+}
+
+void
+bar (void)
+{
+  fn1 (baz ());
+  fn2 (baz);
+}

gcc/varasm.c

@@ -1877,7 +1877,11 @@ void
 mark_decl_referenced (tree decl)
 {
   if (TREE_CODE (decl) == FUNCTION_DECL)
-    cgraph_mark_needed_node (cgraph_node (decl));
+    {
+      /* Extern inline functions don't become needed when referenced.  */
+      if (!DECL_EXTERNAL (decl))
+        cgraph_mark_needed_node (cgraph_node (decl));
+    }
   else if (TREE_CODE (decl) == VAR_DECL)
     cgraph_varpool_mark_needed_node (cgraph_varpool_node (decl));
   /* else do nothing - we can get various sorts of CST nodes here,