C++ runtime version patch for testing

[Konstantin Belousov]

On Sun, Jan 27, 2013 at 01:28:44PM +0000, David Chisnall wrote:
> Hi All,
> 
> Here is a patch that, I believe, should fix the symbol version mismatches between the runtime and the STL implementation.  I have run the exception tests from libcxxrt with this patch applied and:
> 
> - libsupc++ & libstdc++
> - libcxxrt & libstdc++
> - libcxxrt & libc++
> 
> All tests pass for me now.  Please let me know if there are any problems with this, otherwise I'll aim to commit it today or tomorrow with a 1-week MFC.
> 
> David
> 
> Index: gnu/lib/libsupc++/Version.map
> ===================================================================
> --- gnu/lib/libsupc++/Version.map	(revision 245840)
> +++ gnu/lib/libsupc++/Version.map	(working copy)
> @@ -142,6 +142,28 @@
>      _ZdaPvRKSt9nothrow_t;
>      _ZdlPv;
>      _ZdlPvRKSt9nothrow_t;
> +    extern "C++" {
> +      std::set_new_handler*;
What are the symbols you assigning the version there ? I cannot find
anything in the libstdc++.so export list which would match the line.

> +      std::set_terminate*;
> +      std::set_unexpected*;
> +      std::bad_alloc*;
> +
> +      std::bad_alloc*;
std::bad_alloc seems to be duplicated.
Besides that, pristine libstdc++.so exports 'std::bad_alloc::what() const'
at the GLIBCXX_3.4.9 namespace. You did this for the *::what()' from
libcxxrt but not for the libsupc++.

> +      std::bad_cast*;
> +      std::exception*;
> +
> +      "typeinfo for std::bad_alloc";
> +      "typeinfo for std::bad_cast";
> +      "typeinfo for std::exception";
> +
> +      "typeinfo name for std::bad_alloc";
> +      "typeinfo name for std::bad_cast";
> +      "typeinfo name for std::exception";
> +
> +      "vtable for std::bad_alloc";
> +      "vtable for std::bad_cast";
> +      "vtable for std::exception";
> +    };
>  };
>  
>  CXXABI_1.3.1 {
> Index: lib/libcxxrt/Version.map
> ===================================================================
> --- lib/libcxxrt/Version.map	(revision 245840)
> +++ lib/libcxxrt/Version.map	(working copy)
> @@ -209,18 +209,7 @@
>  
>          "std::type_info::type_info(std::type_info const&)";
>          "std::type_info::type_info(std::type_info const&)";
> -        "std::type_info::~type_info()";
> -        "std::type_info::~type_info()";
> -        "std::type_info::~type_info()";
>          "std::type_info::operator=(std::type_info const&)";
[omitted]

Do applications record the dependency on the libcxxrt directly,
using the DT_NEEDED tag ?
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