1@c Copyright (C) 2009 2@c Free Software Foundation, Inc. 3@c This is part of the GCC manual. 4@c For copying conditions, see the file gcc.texi. 5 6@node C++ Implementation 7@chapter C++ Implementation-defined behavior 8@cindex implementation-defined behavior, C++ language 9 10A conforming implementation of ISO C++ is required to document its 11choice of behavior in each of the areas that are designated 12``implementation defined''. The following lists all such areas, 13along with the section numbers from the ISO/IEC 14822:1998 and ISO/IEC 1414822:2003 standards. Some areas are only implementation-defined in 15one version of the standard. 16 17Some choices depend on the externally determined ABI for the platform 18(including standard character encodings) which GCC follows; these are 19listed as ``determined by ABI'' below. @xref{Compatibility, , Binary 20Compatibility}, and @uref{http://gcc.gnu.org/readings.html}. Some 21choices are documented in the preprocessor manual. 22@xref{Implementation-defined behavior, , Implementation-defined 23behavior, cpp, The C Preprocessor}. Some choices are documented in 24the corresponding document for the C language. @xref{C 25Implementation}. Some choices are made by the library and operating 26system (or other environment when compiling for a freestanding 27environment); refer to their documentation for details. 28 29@menu 30* Conditionally-supported behavior:: 31@end menu 32 33@node Conditionally-supported behavior 34@section Conditionally-supported behavior 35 36@cite{Each implementation shall include documentation that identifies 37all conditionally-supported constructs that it does not support (C++0x 381.4).} 39 40@itemize @bullet 41@item 42@cite{Whether an argument of class type with a non-trivial copy 43constructor or destructor can be passed to ... (C++0x 5.2.2).} 44 45Such argument passing is not supported. 46 47@end itemize 48