[cfe-commits] r137763 - /cfe/trunk/test/CodeGenCXX/weak-external.cpp

[Eli Friedman]

On Tue, Aug 16, 2011 at 2:41 PM, Eric Christopher <echristo at apple.com> wrote:
> Author: echristo
> Date: Tue Aug 16 16:41:33 2011
> New Revision: 137763
>
> URL: http://llvm.org/viewvc/llvm-project?rev=137763&view=rev
> Log:
> Migrate weak-external.cpp from llvm/test/FrontendC++.
>
> Added:
>    cfe/trunk/test/CodeGenCXX/weak-external.cpp
>
> Added: cfe/trunk/test/CodeGenCXX/weak-external.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/weak-external.cpp?rev=137763&view=auto
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/weak-external.cpp (added)
> +++ cfe/trunk/test/CodeGenCXX/weak-external.cpp Tue Aug 16 16:41:33 2011
> @@ -0,0 +1,19 @@
> +// RUN: %clang -fexceptions %s -S -emit-llvm -o - | FileCheck %s
> +// PR4262
> +
> +// CHECK-NOT: _ZNSs12_S_constructIPKcEEPcT_S3_RKSaIcESt20forward_iterator_tag
> +
> +// The "basic_string" extern template instantiation declaration is supposed to
> +// suppress the implicit instantiation of non-inline member functions. Make sure
> +// that we suppress the implicit instantiation of non-inline member functions
> +// defined out-of-line. That we aren't instantiating the basic_string
> +// constructor when we shouldn't be. Such an instantiation forces the implicit
> +// instantiation of _S_construct<const char*>. Since _S_construct is a member
> +// template, it's instantiation is *not* suppressed (despite being in
> +// basic_string<char>), so we would emit it as a weak definition.
> +
> +#include <stdexcept>
> +
> +void dummysymbol() {
> +  throw(std::runtime_error("string"));
> +}

We generally try to avoid having clang tests include standard headers...

-Eli