re PR c++/56268 (C++11 ICE with boost multi-precision and boost variant during assign...

	PR c++/56268
	* semantics.c (classtype_has_nothrow_assign_or_copy_p): Call
	maybe_instantiate_noexcept.

From-SVN: r195943

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c1fc4bc..6172db6 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,9 @@
 2013-02-09  Jason Merrill  <jason@redhat.com>
 
+       PR c++/56268
+       * semantics.c (classtype_has_nothrow_assign_or_copy_p): Call
+       maybe_instantiate_noexcept.
+
        PR c++/56247
        * pt.c (eq_specializations): Set comparing_specializations.
        * tree.c (cp_tree_equal): Check it.

diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c
index f8b37c1..e3dea09 100644 (file)
--- a/gcc/cp/semantics.c
+++ b/gcc/cp/semantics.c
@@ -5413,6 +5413,7 @@ classtype_has_nothrow_assign_or_copy_p (tree type, bool assign_p)
       else if (copy_fn_p (fn) <= 0)
        continue;
 
+      maybe_instantiate_noexcept (fn);
       if (!TYPE_NOTHROW_P (TREE_TYPE (fn)))
        return false;
     }

diff --git a/gcc/testsuite/g++.dg/ext/has_nothrow_copy-8.C b/gcc/testsuite/g++.dg/ext/has_nothrow_copy-8.C
new file mode 100644 (file)
index 0000000..e1be1a0
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/has_nothrow_copy-8.C
@@ -0,0 +1,19 @@
+// PR c++/56268
+// { dg-options -std=c++11 }
+
+template <class T>
+struct A {
+  A(const A&) noexcept (T::value);
+};
+
+struct B {
+  static const bool value = true;
+};
+
+template <class T>
+struct C {
+  static const bool value = __has_nothrow_copy (T);
+};
+
+#define SA(X) static_assert((X),#X)
+SA(C<A<B>>::value);