[committed] libstdc++: Add assertion to debug_allocator test

[Jonathan Wakely via Gcc-patches]

Tested x86_64-linux. Pushed to trunk.

-- >8 --

libstdc++-v3/ChangeLog:

        * testsuite/ext/debug_allocator/check_deallocate_null.cc: Add
        assertion to ensure expected exception is throw.
---
 .../testsuite/ext/debug_allocator/check_deallocate_null.cc     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git 
a/libstdc++-v3/testsuite/ext/debug_allocator/check_deallocate_null.cc 
b/libstdc++-v3/testsuite/ext/debug_allocator/check_deallocate_null.cc
index 1f0a9eb0b61..c5bcafb04e9 100644
--- a/libstdc++-v3/testsuite/ext/debug_allocator/check_deallocate_null.cc
+++ b/libstdc++-v3/testsuite/ext/debug_allocator/check_deallocate_null.cc
@@ -31,7 +31,8 @@ int main()
 
   try
     {
-      __gnu_test::check_deallocate_null<allocator_type>(); 
+      __gnu_test::check_deallocate_null<allocator_type>();
+      VERIFY(false);
     }
   catch (std::runtime_error& obj)
     {
-- 
2.40.1