Added a caveat to the gcc-4.7/changes.html page about C++11 ABI
incompatibilities.
Committed to wwwdocs.
Index: htdocs/gcc-4.7/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v
retrieving revision 1.120
diff -u -r1.120 changes.html
--- htdocs/gcc-4.7/changes.html 20 Jun 2012 23:34:49 -0000 1.120
+++ htdocs/gcc-4.7/changes.html 15 Jul 2012 15:04:29 -0000
@@ -97,6 +97,17 @@
<li>It is no longer possible to use the <code>"l"</code>
constraint in MIPS16 <code>asm</code> statements.</li>
+ <li>GCC versions 4.7.0 and 4.7.1 had changes to the C++ standard library
+ which affected the ABI in C++11 mode: a data member was added to
+ <code>std::list</code> changing its size and altering the definitions of
+ some member functions, and <code>std::pair</code>'s move constructor was
+ non-trivial which altered the calling convention for functions with
+ <code>std::pair</code> arguments or return types. The ABI
incompatibilities
+ have been fixed for GCC version 4.7.2 but as a result C++11 code compiled
+ with GCC 4.7.0 or 4.7.1 may be incompatible with C++11 code compiled with
+ different GCC versions and with C++98/C++03 code compiled with any version.
+ </li>
+
<li>More information on porting to GCC 4.7 from previous versions
of GCC can be found in
the <a href="http://gcc.gnu.org/gcc-4.7/porting_to.html";>porting
