8.7 Declarations
Describes implementation-defined aspects of the Arm® C++ compiler and C++ library relating to declarations, as required by the ISO C++ Standard.
- Meaning of attribute declaration (7).
Arm Compiler 6 is based on
LLVM and Clang technology. Clang defines several attributes as specified
by the Clang documentation at https://clang.llvm.org/docs/AttributeReference.html.
From these attributes, Arm Compiler 6 supports
attributes that are scoped with gnu::
(for compatibility with GCC) and clang::.
- Underlying type for enumeration (7.2).
- The underlying type for enumerations without a fixed underlying type is
int or unsigned
int, depending on the values of the enumerators. The –fshort-enums command-line option uses the smallest
unsigned integer possible, or the smallest signed integer possible if any enumerator is negative,
starting with char.
- Meaning of an
asm declaration (7.4).
- An
asm declaration enables the direct use
of T32, A32, or A64 instructions.
- Semantics of linkage specifiers (7.5).
- Only the string-literals "C" and "C++" can be used in a linkage
specifier.
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