Re: C++ PATCH for c++/54325 (wrong error initializing abstract base class)

[Matthias Klose]

Am 07.12.2012 06:05, schrieb Jason Merrill:
> It's perfectly OK to initialize a base class of abstract type; it's only an
> error to create a full object of such a type.  So this patch moves the check
> from more generic initialization code out into a function that's definitely
> creating a new object.
> 
> Tested x86_64-pc-linux-gnu, applying to trunk and 4.7.

this doesn't build on the branch:

../gcc/cp/tree.c: In function 'build_aggr_init_expr':
../gcc/cp/tree.c:399:1: error: parameter name omitted

this fixes the bootstrap, currently running the testsuite.

--- cp/tree.c~  2012-12-07 10:01:16.665415647 +0100
+++ cp/tree.c   2012-12-07 10:11:01.373410862 +0100
@@ -396,7 +396,8 @@
    callable.  */

 tree
-build_aggr_init_expr (tree type, tree init, tsubst_flags_t /*complain*/)
+build_aggr_init_expr (tree type, tree init,
+                     tsubst_flags_t complain ATTRIBUTE_UNUSED)
 {
   tree fn;
   tree slot;