Remove broken links from libstdc++ manual to Doxygen pages

The Doxygen docs do not have stable URLs, so linking to specific pages
doesn't work well.

	* doc/xml/manual/backwards_compatibility.xml: Remove link to
	Doxygen-generated pages with unstable URL.
	* doc/xml/manual/concurrency_extensions.xml: Likewise.
	* doc/xml/manual/extensions.xml: Likewise.
	* doc/xml/manual/parallel_mode.xml: Likewise.
	* doc/xml/manual/support.xml: Likewise.

From-SVN: r269881

6 files changed, 21 insertions, 11 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 2a3021a..061ec7f 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,12 @@
 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
 
+	* doc/xml/manual/backwards_compatibility.xml: Remove link to
+	Doxygen-generated pages with unstable URL.
+	* doc/xml/manual/concurrency_extensions.xml: Likewise.
+	* doc/xml/manual/extensions.xml: Likewise.
+	* doc/xml/manual/parallel_mode.xml: Likewise.
+	* doc/xml/manual/support.xml: Likewise.
+
 	* include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
 	avoid -Wconversion warnings.
 
diff --git a/libstdc++-v3/doc/xml/manual/backwards_compatibility.xml b/libstdc++-v3/doc/xml/manual/backwards_compatibility.xml
index aa95f3e..8d97c21 100644
--- a/libstdc++-v3/doc/xml/manual/backwards_compatibility.xml
+++ b/libstdc++-v3/doc/xml/manual/backwards_compatibility.xml
@@ -761,8 +761,9 @@ No <code>stream::attach(int fd)</code>
 
 <para>
       An extension is available that implements this.
-      <filename class="headerfile">&lt;ext/stdio_filebuf.h&gt;</filename> contains a derived class called
-      <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00074.html"><code>__gnu_cxx::stdio_filebuf</code></link>.
+      <filename class="headerfile">&lt;ext/stdio_filebuf.h&gt;</filename>
+      contains a derived class called
+      <classname>__gnu_cxx::stdio_filebuf</classname>.
       This class can be constructed from a C <code>FILE*</code> or a file
       descriptor, and provides the <code>fd()</code> function.
     </para>
diff --git a/libstdc++-v3/doc/xml/manual/concurrency_extensions.xml b/libstdc++-v3/doc/xml/manual/concurrency_extensions.xml
index cb79c20..663ae5e 100644
--- a/libstdc++-v3/doc/xml/manual/concurrency_extensions.xml
+++ b/libstdc++-v3/doc/xml/manual/concurrency_extensions.xml
@@ -290,7 +290,7 @@ the current host. In libstdc++ implementation files,
 </para>
 
 <para>Within libstdc++ sources, all calls to underlying thread functionality
-use this layer. More detail as to the specific interface can be found in the source <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00883_source.html">documentation</link>.
+use this layer. More detail as to the specific interface can be found in the source <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/index.html">documentation</link>.
 </para>
 
 <para>By design, the gthread layer is interoperable with the types,
diff --git a/libstdc++-v3/doc/xml/manual/extensions.xml b/libstdc++-v3/doc/xml/manual/extensions.xml
index 84a995a..8912e39 100644
--- a/libstdc++-v3/doc/xml/manual/extensions.xml
+++ b/libstdc++-v3/doc/xml/manual/extensions.xml
@@ -479,11 +479,13 @@ get_temporary_buffer(5, (int*)0);
 	 so if you perform any I/O directly, don't expect the library to be
 	 aware of it.
      </para></listitem>
-     <listitem><para>Beginning with 3.1, the extra <code>filebuf</code> constructor and
+     <listitem><para>Beginning with 3.1, the extra
+	 <classname>basic_filebuf</classname> constructor and
 	 the <code>fd()</code> function were removed from the standard
-	 filebuf.  Instead, <code>&lt;ext/stdio_filebuf.h&gt;</code> contains
-	 a derived class called
-	 <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00074.html"><code>__gnu_cxx::stdio_filebuf</code></link>.
+	 filebuf.  Instead,
+	 <filename class="headerfile">&lt;ext/stdio_filebuf.h&gt;</filename>
+	 contains a derived class template called
+	 <classname>__gnu_cxx::stdio_filebuf</classname>.
 	 This class can be constructed from a C <code>FILE*</code> or a file
 	 descriptor, and provides the <code>fd()</code> function.
      </para></listitem>
diff --git a/libstdc++-v3/doc/xml/manual/parallel_mode.xml b/libstdc++-v3/doc/xml/manual/parallel_mode.xml
index abf63ca..60e2088 100644
--- a/libstdc++-v3/doc/xml/manual/parallel_mode.xml
+++ b/libstdc++-v3/doc/xml/manual/parallel_mode.xml
@@ -725,8 +725,8 @@ i. e. it is a singleton. It can be read and written by calling
 <code>__gnu_parallel::_Settings::set</code>, respectively.
 Please note that the first call return a const object, so direct manipulation
 is forbidden.
-See <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01005.html">
-  <filename class="headerfile">settings.h</filename></link>
+See <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/index.html">
+  <filename class="headerfile">&lt;parallel/settings.h&gt;</filename></link>
 for complete details.
 </para>
 
diff --git a/libstdc++-v3/doc/xml/manual/support.xml b/libstdc++-v3/doc/xml/manual/support.xml
index 573869a..53f4fbc 100644
--- a/libstdc++-v3/doc/xml/manual/support.xml
+++ b/libstdc++-v3/doc/xml/manual/support.xml
@@ -97,8 +97,8 @@
     The header <filename class="headerfile">limits</filename> defines
     traits classes to give access to various implementation
     defined-aspects of the fundamental types. The traits classes --
-    fourteen in total -- are all specializations of the template class
-    <classname>numeric_limits</classname>, documented <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00593.html">here</link>
+    fourteen in total -- are all specializations of the class template
+    <classname>numeric_limits</classname>
     and defined as follows:
     </para>