gcc-4.7-20111022 fails to build on PA-RISC

[Jonathan Wakely]

On 29 October 2011 16:51, Dimitrios Apostolou wrote:
> Hello again,
>
> I tried disabling precompiled headers for libstdc++ (thanks apinski for
> pointing this) and now the build fails while trying to build atomic.o. Any
> ideas? Please take a look at the error message in the attached file. The
> culprit seems to be the following:
>
> /usr/include/bits/pthreadtypes.h:34:8: error: no matching function for call
> to '<anonymous struct>::._3(const volatile __atomic_lock_t&)'

This looks as though it's a problem with how we used pthread_mutex_t,
which I changed a few days ago and that might have fixed it.

You could try making this change in libstdc++-v3/include/std/mutex (or
wait for the next 4.7 snapshot)

-    __native_type  _M_mutex = __GTHREAD_MUTEX_INIT;
+    __native_type  _M_mutex;

   public:
     typedef __native_type*                      native_handle_type;

 #ifdef __GTHREAD_MUTEX_INIT
-    constexpr mutex() : _M_mutex(__GTHREAD_MUTEX_INIT) { }
+    constexpr mutex() = default;
 #else

Please let me know if that helps.