PR c++/55652

	* typeck2.c (merge_exception_specifiers): Don't call operand_equal_p
	if noex is NULL.

	* g++.dg/cpp0x/noexcept19.C: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@194479 138bc75d-0d04-0410-961f-82ee72b054a4

4 files changed, 41 insertions, 1 deletions

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index a2228fad685..ea4cfb20342 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2012-12-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/55652
+	* typeck2.c (merge_exception_specifiers): Don't call operand_equal_p
+	if noex is NULL.
+
 2012-12-11  Jason Merrill  <jason@redhat.com>
 
 	PR c++/54883
diff --git a/gcc/cp/typeck2.c b/gcc/cp/typeck2.c
index abddd4d1110..fbf50004b60 100644
--- a/gcc/cp/typeck2.c
+++ b/gcc/cp/typeck2.c
@@ -1871,7 +1871,7 @@ merge_exception_specifiers (tree list, tree add, tree fn)
       /* If ADD is a deferred noexcept, we must have been called from
 	 process_subob_fn.  For implicitly declared functions, we build up
 	 a list of functions to consider at instantiation time.  */
-      if (operand_equal_p (noex, boolean_true_node, 0))
+      if (noex && operand_equal_p (noex, boolean_true_node, 0))
 	noex = NULL_TREE;
       gcc_assert (fn && (!noex || is_overloaded_fn (noex)));
       noex = build_overload (fn, noex);
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a03406af0ad..e16352a3812 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-12-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/55652
+	* g++.dg/cpp0x/noexcept19.C: New test.
+
 2012-12-13  Richard Biener  <rguenther@suse.de>
 
 	PR lto/55660
diff --git a/gcc/testsuite/g++.dg/cpp0x/noexcept19.C b/gcc/testsuite/g++.dg/cpp0x/noexcept19.C
new file mode 100644
index 00000000000..12ff86e0d22
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/noexcept19.C
@@ -0,0 +1,29 @@
+// PR c++/55652
+// { dg-do compile }
+// { dg-options "-std=c++11" }
+
+template <typename T>
+struct A
+{
+  static const bool a = false;
+};
+
+template <typename X, typename Y = A <X>>
+struct B
+{
+  B () noexcept (A <Y>::a) {}
+};
+
+template <typename X, typename Y>
+struct C
+{
+  X x;
+  Y y;
+};
+
+struct D
+{
+  D () throw (int);
+};
+
+C <D, B <D>> c;