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| <h2 class="chapter">5 C++ Implementation-defined behavior</h2> |
| |
| <p><a name="index-implementation_002ddefined-behavior_002c-C_002b_002b-language-2176"></a> |
| A conforming implementation of ISO C++ is required to document its |
| choice of behavior in each of the areas that are designated |
| “implementation defined”. The following lists all such areas, |
| along with the section numbers from the ISO/IEC 14822:1998 and ISO/IEC |
| 14822:2003 standards. Some areas are only implementation-defined in |
| one version of the standard. |
| |
| <p>Some choices depend on the externally determined ABI for the platform |
| (including standard character encodings) which GCC follows; these are |
| listed as “determined by ABI” below. See <a href="Compatibility.html#Compatibility">Binary Compatibility</a>, and <a href="http://gcc.gnu.org/readings.html">http://gcc.gnu.org/readings.html</a>. Some |
| choices are documented in the preprocessor manual. |
| See <a href="../cpp/Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined behavior</a>. Some choices are documented in |
| the corresponding document for the C language. See <a href="C-Implementation.html#C-Implementation">C Implementation</a>. Some choices are made by the library and operating |
| system (or other environment when compiling for a freestanding |
| environment); refer to their documentation for details. |
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