Hi!
I've committed the following workaround for PR52582 to 4.7 branch (acked
on IRC by David and Richard) after bootstrapping/regtesting it on
powerpc64-linux (--with-cpu=default32 as well as -m64 defaulted build),
and for trunk committed just the testcase. Richard committed some fix to
the trunk already, but we still should figure out why the DECL_EXTERNAL
on the devirtualized fndecl isn't set.
2012-03-14 Jakub Jelinek <ja...@redhat.com>
PR c++/52582
* config/rs6000/rs6000.c (call_ABI_of_interest): Return true
if c_node is NULL.
* g++.dg/opt/pr52582.C: New test.
--- gcc/config/rs6000/rs6000.c.jj 2012-03-12 10:45:17.000000000 +0100
+++ gcc/config/rs6000/rs6000.c 2012-03-14 11:34:18.043648481 +0100
@@ -7452,6 +7452,9 @@ call_ABI_of_interest (tree fndecl)
/* Interesting functions that we are emitting in this object file. */
c_node = cgraph_get_node (fndecl);
c_node = cgraph_function_or_thunk_node (c_node, NULL);
+ if (c_node == NULL)
+ return true;
+
return !cgraph_only_called_directly_p (c_node);
}
return false;
--- gcc/testsuite/g++.dg/opt/pr52582.C.jj 2012-03-14 11:29:34.008618924
+0100
+++ gcc/testsuite/g++.dg/opt/pr52582.C 2012-03-14 11:20:26.000000000 +0100
@@ -0,0 +1,28 @@
+// PR c++/52582
+// { dg-do compile }
+// { dg-options "-O2" }
+
+inline void *operator new (__SIZE_TYPE__, void *p) throw ()
+{
+ return p;
+}
+
+struct B
+{
+ virtual ~B ();
+ B ();
+};
+
+struct A : B
+{
+ A () : B () {}
+ virtual void bar ();
+};
+
+void
+foo ()
+{
+ char a[64];
+ B *b = new (&a) A ();
+ b->~B ();
+}
Jakub
