diff --git a/libcxx/src/support/runtime/exception_fallback.ipp b/libcxx/src/support/runtime/exception_fallback.ipp
--- a/libcxx/src/support/runtime/exception_fallback.ipp
+++ b/libcxx/src/support/runtime/exception_fallback.ipp
@@ -49,7 +49,6 @@
   return __libcpp_atomic_load(&__terminate_handler);
 }
 
-#ifndef __EMSCRIPTEN__ // We provide this in JS
 _LIBCPP_NORETURN
 void
 terminate() _NOEXCEPT
@@ -72,9 +71,7 @@
     }
 #endif  // _LIBCPP_NO_EXCEPTIONS
 }
-#endif // !__EMSCRIPTEN__
 
-#if !defined(__EMSCRIPTEN__)
 bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
 
 int uncaught_exceptions() _NOEXCEPT
@@ -83,7 +80,6 @@
   fprintf(stderr, "uncaught_exceptions not yet implemented\n");
   ::abort();
 }
-#endif // !__EMSCRIPTEN__
 
 
 exception::~exception() _NOEXCEPT