I found this in my tree. It must date back a while ago, and I do not remember full context, but probably I noticed this will reviewing some patches.
Applied. Gerald Index: gcc-6/porting_to.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-6/porting_to.html,v retrieving revision 1.21 diff -u -r1.21 porting_to.html --- gcc-6/porting_to.html 22 Mar 2016 15:41:09 -0000 1.21 +++ gcc-6/porting_to.html 12 Apr 2016 04:44:30 -0000 @@ -265,8 +265,8 @@ <p> The <code>std::auto_ptr</code> class template was deprecated in C++11, so GCC now warns about its usage. This warning can be suppressed with the -<tt>-Wno-deprecated-declarations</tt> command-line option, though we advise -to port the code to use C++11's <code>std::unique_ptr</code> instead. +<code>-Wno-deprecated-declarations</code> command-line option, though we +advise to port the code to use C++11's <code>std::unique_ptr</code> instead. </p> <h3 id="constexpr-needed">'constexpr' needed for in-class initialization of static data member</h3> @@ -274,7 +274,7 @@ <p> Since C++11, the <code>constexpr</code> keyword is needed when initializing a non-integral static data member in a class. As a GNU extension, the following -program is accepted in C++03 (albeit with a <tt>-Wpedantic</tt> warning): +program is accepted in C++03 (albeit with a <code>-Wpedantic</code> warning): </p> <pre><code> @@ -319,9 +319,10 @@ Finally, the type and mangling of flexible array members has changed from previous releases. While in GCC 5 and prior the type of a flexible array member is an array of zero elements (a GCC extension), in GCC 6 it -is that of an array of an unspecified bound (i.e., <tt>T[]</tt> as opposed -to <tt>T[0]</tt>). This is a silent ABI change with no corresponding -<tt>-fabi-version</tt> or <tt>-Wabi</tt> option to disable or warn about. +is that of an array of an unspecified bound (i.e., <code>T[]</code> as opposed +to <code>T[0]</code>). This is a silent ABI change with no corresponding +<code>-fabi-version</code> or <code>-Wabi</code> option to disable or warn +about. </p> <h3 id="flifetime-dse">More aggressive optimization of <code>-flifetime-dse</code></h3>