re PR libstdc++/34680 (Unconditional use of dynamic_cast in locale_facets.tcc breaks...

2008-01-06  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/34680
	* doc/cpp.texi ([Common Predefined Macros]): Document.

From-SVN: r131382

diff --git a/gcc/doc/cpp.texi b/gcc/doc/cpp.texi
index d19ec29ff74d2dc1908c9a4863d23e6a2d21cec3..464965c35c78094e97488f72de5bccc5fb9796cc 100644 (file)
--- a/gcc/doc/cpp.texi
+++ b/gcc/doc/cpp.texi
@@ -2133,8 +2133,13 @@ enabled by default, but can be disabled with @option{-Wno-deprecated}.
 
 @item __EXCEPTIONS
 This macro is defined, with value 1, when compiling a C++ source file
-with exceptions enabled.  If @option{-fno-exceptions} was used when
-compiling the file, then this macro will not be defined.
+with exceptions enabled.  If @option{-fno-exceptions} is used when
+compiling the file, then this macro is not defined.
+
+@item __GXX_RTTI
+This macro is defined, with value 1, when compiling a C++ source file
+with runtime type identification enabled.  If @option{-fno-rtti} is
+used when compiling the file, then this macro is not defined.
 
 @item __USING_SJLJ_EXCEPTIONS__
 This macro is defined, with value 1, if the compiler uses the old