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RealView Compiler Reference Guide
Preface Introduction
About the ARM compiler Source language modes ISO C90 ISO C99 ISO C++ Language extensions and language compliance Language extensions Language compliance The C and C++ libraries Compiler Command-line Options Language Extensions Compiler-specific Features C and C++ Implementation Details Via File Syntax Standard C Implementation Definition Standard C++ Implementation Definition C and C++ Compiler Implementation LimitsLanguage extensions
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| Home > Introduction > Language extensions and language compliance > Language extensions | |||
The language extensions supported by the compiler are categorized as follows:
- C99 features
The compiler makes some language features of C99 available:
as extensions to strict C90, for example,
//‑style commentsas extensions to both Standard C++ and strict C90, for example, restrict pointers.
For more information see:
- Standard C extensions
The compiler supports numerous extensions to strict C99, for example, function prototypes that override old‑style non‑prototype definitions. See Standard C language extensions for more information.
These extensions to Standard C are also available in C90.
- Standard C++ extensions
The compiler supports numerous extensions to strict C++, for example, qualified names in the declaration of class members. See Standard C++ language extensions for more information.
These extensions are not available in either Standard C or C90.
- Standard C and Standard C++ extensions
The compiler supports some extensions specific to strict C++ and strict C90, for example, anonymous classes, structures, and unions. See Standard C and standard C++ language extensions for more information.
- GNU extensions
The compiler supports some extensions offered by the GNU compiler, for example, GNU‑style extended lvalues and GNU builtin functions. For more information see:
- ARM‑specific extensions
The compiler supports a range of extensions specific to the ARM compiler, for example, instruction intrinsics and other builtin functions. See Chapter 4 Compiler-specific Features for more information.
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