re PR libstdc++/78110 (freestanding libstdc++ fails to compile)

2016-10-26  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR libstdc++/78110
        * libsupc++/new_opa.cc: Don't include <malloc.h> in a free standing
        environment.  Declare memalign directly in that case.

From-SVN: r241591

libstdc++-v3/ChangeLog

+2016-10-26  Bernd Edlinger  <bernd.edlinger@hotmail.de>
+
+	PR libstdc++/78110
+	* libsupc++/new_opa.cc: Don't include <malloc.h> in a free standing
+	environment.  Declare memalign directly in that case.
+
 2016-10-26  Jonathan Wakely  <jwakely@redhat.com>
 
 	* testsuite/experimental/filesystem/iterators/pop.cc: Remove

libstdc++-v3/libsupc++/new_opa.cc

@@ -48,7 +48,11 @@ aligned_alloc (std::size_t al, std::size_t sz)
   return nullptr;
 }
 #elif _GLIBCXX_HAVE_MEMALIGN
+#if _GLIBCXX_HOSTED
 #include <malloc.h>
+#else
+extern "C" void *memalign(std::size_t boundary, std::size_t size);
+#endif
 #define aligned_alloc memalign
 #else
 // The C library doesn't provide any aligned allocation functions, declare