[patch] Use noexcept instead of _GLIBCXX_NOEXCEPT

[Jonathan Wakely]

There's no need to use the _GLIBCXX_NOEXCEPT macro in code that is
only compiled when __cplusplus >= 201103L, just use noexcept directly.

Tested powerpc64le-linux (both ABIs), committed to trunk.



commit 5c1cf3fcbfa60abf8d8a174336982a548e23c64e
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Fri Oct 2 22:55:39 2015 +0100

    Use noexcept instead of _GLIBCXX_NOEXCEPT
    
    	* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
    	(basic_string::front() const, basic_string::back() const): Use
    	noexcept instead of _GLIBCXX_NOEXCEPT macro.
    	(__versa_string::front, __versa_string::back): Likewise.

diff --git a/libstdc++-v3/include/bits/basic_string.h b/libstdc++-v3/include/bits/basic_string.h
index c1689af..35246d9 100644
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -3441,7 +3441,7 @@ _GLIBCXX_END_NAMESPACE_CXX11
        *  element of the %string.
        */
       const_reference
-      front() const _GLIBCXX_NOEXCEPT
+      front() const noexcept
       {
 	__glibcxx_assert(!empty());
 	return operator[](0);
@@ -3463,7 +3463,7 @@ _GLIBCXX_END_NAMESPACE_CXX11
        *  last element of the %string.
        */
       const_reference
-      back() const _GLIBCXX_NOEXCEPT
+      back() const noexcept
       {
 	__glibcxx_assert(!empty());
 	return operator[](this->size() - 1);
diff --git a/libstdc++-v3/include/ext/vstring.h b/libstdc++-v3/include/ext/vstring.h
index 94af25e..68acd57 100644
--- a/libstdc++-v3/include/ext/vstring.h
+++ b/libstdc++-v3/include/ext/vstring.h
@@ -613,7 +613,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
        *  element of the %string.
        */
       reference
-      front() _GLIBCXX_NOEXCEPT
+      front() noexcept
       { return operator[](0); }
 
       /**
@@ -621,7 +621,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
        *  element of the %string.
        */
       const_reference
-      front() const _GLIBCXX_NOEXCEPT
+      front() const noexcept
       { return operator[](0); }
 
       /**
@@ -629,7 +629,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
        *  element of the %string.
        */
       reference
-      back() _GLIBCXX_NOEXCEPT
+      back() noexcept
       { return operator[](this->size() - 1); }
 
       /**
@@ -637,7 +637,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
        *  last element of the %string.
        */
       const_reference
-      back() const _GLIBCXX_NOEXCEPT
+      back() const noexcept
       { return operator[](this->size() - 1); }
 #endif