[c++1z] P0003R5: Removing dynamic exception specifications.

We continue to support dynamic exception specifications in C++1z as an
extension, but produce an error-by-default warning when we encounter one. This
allows users to opt back into the feature with a warning flag, and implicitly
opts system headers back into the feature should they happen to use it.

There is one semantic change implied by P0003R5 but not implemented here:
violating a throw() exception specification should now call std::terminate
directly instead of calling std::unexpected(), but since P0003R5 also removes
std::unexpected() and std::set_unexpected, and the default unexpected handler
calls std::terminate(), a conforming C++1z program cannot tell that we are
still calling it. The upside of this strategy is perfect backwards
compatibility; the downside is that we don't get the more efficient 'noexcept'
codegen for 'throw()'.

llvm-svn: 289019

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/test/CodeGenCXX/mangle-exception-spec.cpp b/clang/test/CodeGenCXX/mangle-exception-spec.cpp
index 7991f003514..15f7a8b6cb5 100644
--- a/clang/test/CodeGenCXX/mangle-exception-spec.cpp
+++ b/clang/test/CodeGenCXX/mangle-exception-spec.cpp
@@ -1,5 +1,5 @@
-// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s --check-prefix CHECK --check-prefix CHECK-CXX11
-// RUN: %clang_cc1 -std=c++1z -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s --check-prefix CHECK --check-prefix CHECK-CXX17
+// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 -Wno-dynamic-exception-spec | FileCheck %s --check-prefix CHECK --check-prefix CHECK-CXX11
+// RUN: %clang_cc1 -std=c++1z -emit-llvm %s -o - -triple=x86_64-apple-darwin9 -Wno-dynamic-exception-spec | FileCheck %s --check-prefix CHECK --check-prefix CHECK-CXX17
 
 // CHECK: define {{.*}} @_Z1aPFivE(
 void a(int() throw(int, float)) {}