[PATCH] PR libstdc++/80448 remove noexcept from defaulted functions

[Jonathan Wakely]

Clang trunk won't compile <experimental/filesystem> due to a conflict
between a default member initializer and "foo() noexcept = default;"
so this simply removes the noexept. The defaulted constructors should
still be noexcept anyway, so there's no need to explicitly require it.

        PR libstdc++/80448
        * include/experimental/bits/fs_dir.h (directory_iterator)
        (recursive_directory_iterator): Remove noexcept from defaulted
        constructors.

Tested ppc64le-linux, committed to trunk.



commit 2a66f241c739fc2c3c93e82a30bee97823a8df63
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Wed Apr 19 11:52:27 2017 +0100

    PR libstdc++/80448 remove noexcept from defaulted functions
    
        PR libstdc++/80448
        * include/experimental/bits/fs_dir.h (directory_iterator)
        (recursive_directory_iterator): Remove noexcept from defaulted
        constructors.

diff --git a/libstdc++-v3/include/experimental/bits/fs_dir.h 
b/libstdc++-v3/include/experimental/bits/fs_dir.h
index 3bdf911..0efaf94 100644
--- a/libstdc++-v3/include/experimental/bits/fs_dir.h
+++ b/libstdc++-v3/include/experimental/bits/fs_dir.h
@@ -181,7 +181,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
     typedef const directory_entry& reference;
     typedef input_iterator_tag     iterator_category;
 
-    directory_iterator() noexcept = default;
+    directory_iterator() = default;
 
     explicit
     directory_iterator(const path& __p)
@@ -262,7 +262,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
     typedef const directory_entry& reference;
     typedef input_iterator_tag     iterator_category;
 
-    recursive_directory_iterator() noexcept = default;
+    recursive_directory_iterator() = default;
 
     explicit
     recursive_directory_iterator(const path& __p)
@@ -282,8 +282,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
     recursive_directory_iterator(
         const recursive_directory_iterator&) = default;
 
-    recursive_directory_iterator(
-        recursive_directory_iterator&&) noexcept = default;
+    recursive_directory_iterator(recursive_directory_iterator&&) = default;
 
     ~recursive_directory_iterator();