--- www/firefox/files/patch-memory_mozalloc_throw__gcc.h	(nonexistent)
+++ www/firefox/files/patch-memory_mozalloc_throw__gcc.h	(working copy)
@@ -0,0 +1,131 @@ 
+--- memory/mozalloc/throw_gcc.h.orig	2016-07-25 20:22:04 UTC
++++ memory/mozalloc/throw_gcc.h
+@@ -19,104 +19,112 @@
+ 
+ #include "mozilla/mozalloc_abort.h"
+ 
++#if defined(__clang__) && \
++    defined(_LIBCPP_VERSION) && _LIBCPP_VERSION >= 4000 && \
++    defined(__has_feature) && __has_feature(cxx_attributes)
++#  define MOZ_NORETURN_CXX11 [[noreturn]]
++#else
++#  define MOZ_NORETURN_CXX11
++#endif
++
+ namespace std {
+ 
+ // NB: user code is not supposed to touch the std:: namespace.  We're
+ // doing this after careful review because we want to define our own
+ // exception throwing semantics.  Don't try this at home!
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_bad_exception(void)
+ {
+     mozalloc_abort("fatal: STL threw bad_exception");
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_bad_alloc(void)
+ {
+     mozalloc_abort("fatal: STL threw bad_alloc");
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_bad_cast(void)
+ {
+     mozalloc_abort("fatal: STL threw bad_cast");
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_bad_typeid(void)
+ {
+     mozalloc_abort("fatal: STL threw bad_typeid");
+ }
+ 
+ // used by <functional>
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_bad_function_call(void)
+ {
+     mozalloc_abort("fatal: STL threw bad_function_call");
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_logic_error(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_domain_error(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_invalid_argument(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_length_error(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_out_of_range(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_runtime_error(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_range_error(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_overflow_error(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_underflow_error(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_ios_failure(const char* msg)
+ {
+     mozalloc_abort(msg);
+ }
+ 
+-MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
++MOZ_NORETURN_CXX11 MOZ_EXPORT MOZ_NORETURN MOZ_ALWAYS_INLINE void
+ __throw_system_error(int err)
+ {
+     char error[128];