(make_node): Put PARM_DECLs of nested functions onto

parent's saveable obstack.

From-SVN: r5299

diff --git a/gcc/tree.c b/gcc/tree.c
index 317e8ad0cee906c16e81e641ca29cca2ba670323..7fd8296f229b87481f8fd14d0d2d802ee5f5ac67 100644 (file)
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -796,7 +796,22 @@ make_node (code)
         even though we may make them before the function turns
         on temporary allocation.  */
       else if (code == PARM_DECL)
-       obstack = function_maybepermanent_obstack;
+       {
+         tree context = 0;
+         if (current_function_decl)
+           context = decl_function_context (current_function_decl);
+         /* If this is a nested function, then we must allocate the PARM_DECL
+            on the parent's saveable_obstack, so that they will live to the
+            end of the parent's closing brace.  This is neccesary in case we
+            try to inline the function into its parent.  */
+         if (context)
+           {
+             struct function *p = find_function_data (context);
+             obstack = p->function_maybepermanent_obstack;
+           }
+         else
+           obstack = function_maybepermanent_obstack;
+       }
       break;
 
     case 't':  /* a type node */