tree.c (get_callee_fndecl): Only use DECL_ABSTRACT_ORIGIN if it has DECL_SAVED_TREE.

* tree.c (get_callee_fndecl): Only use DECL_ABSTRACT_ORIGIN if
it has DECL_SAVED_TREE.

From-SVN: r47615

gcc/ChangeLog

 2001-12-04  Alexandre Oliva  <aoliva@redhat.com>
 
+	* tree.c (get_callee_fndecl): Only use DECL_ABSTRACT_ORIGIN if
+	it has DECL_SAVED_TREE.
+	
 	* c-decl.c (duplicate_decls): Revert rth's patch.  If newdecl
 	is in a different binding level, get its abstract origin to be
 	olddecl.

gcc/tree.c

@@ -4379,12 +4379,21 @@ get_callee_fndecl (call)
   if (TREE_CODE (addr) == ADDR_EXPR
       && TREE_CODE (TREE_OPERAND (addr, 0)) == FUNCTION_DECL)
     {
-      addr = TREE_OPERAND (addr, 0);
-
-      if (! DECL_INITIAL (addr) && DECL_ABSTRACT_ORIGIN (addr))
-	addr = DECL_ABSTRACT_ORIGIN (addr);
-
-      return addr;
+      tree fn = TREE_OPERAND (addr, 0);
+
+      /* If fn is a declaration of a function in a nested scope that
+         was globally declared inline, we don't set its DECL_INITIAL.
+         However, we can't blindly follow DECL_ABSTRACT_ORIGIN because
+         the C++ front-end uses it for cdtors to refer to their
+         internal declarations, that are not real functions.
+         Fortunately those don't have trees to be saved, so we can tell by
+         checking their DECL_SAVED_TREE.  */
+      if (! DECL_INITIAL (fn)
+	  && DECL_ABSTRACT_ORIGIN (fn)
+	  && DECL_SAVED_TREE (DECL_ABSTRACT_ORIGIN (fn)))
+	fn = DECL_ABSTRACT_ORIGIN (fn);
+
+      return fn;
     }
 
   /* We couldn't figure out what was being called.  */