[pushed] c++: add testcase verifying non-dep new-expr checking

[Patrick Palka]

N.B. we currently don't diagnose 'new A(1)' below ultimately because
when in a template context our valid ctor call checking only happens for
type_build_ctor_call types.

-- >8 --

gcc/testsuite/ChangeLog:

        * g++.dg/template/new14.C: New test.
---
 gcc/testsuite/g++.dg/template/new14.C | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/template/new14.C

diff --git a/gcc/testsuite/g++.dg/template/new14.C 
b/gcc/testsuite/g++.dg/template/new14.C
new file mode 100644
index 00000000000..8c0efe47ae2
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/new14.C
@@ -0,0 +1,20 @@
+// Verify we check new-expressions ahead of time.
+
+struct A { };
+struct B { B(int); };
+struct C { void* operator new(__SIZE_TYPE__, int); };
+
+template<class T>
+void f() {
+  new A(1); // { dg-error "no match" "" { xfail *-*-* } }
+  new B(1, 2); // { dg-error "no match" }
+  new B; // { dg-error "no match" }
+  new C; // { dg-error "no match" }
+}
+
+
+template<class T>
+void g() {
+  new int[__SIZE_MAX__]; // { dg-error "exceeds maximum" }
+  new int[__SIZE_MAX__ / sizeof(int)]; // { dg-error "exceeds maximum" }
+}
-- 
2.42.0.482.g2e8e77cbac