ARM VERSION 1.2 Fiche technique télécharger pdf (Page 76)

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ARM Compiler Reference

Example 3-6 Linkage specification

extern const int z; /* in read-only segment, cannot */

/* be dynamically initialized */

extern "C++:read/write" const int y; /* in read/write segment */

/* can be dynamically initialized */

extern "C++:read/write" {

const int i=5; /* placed in read-only segment, */

/* not extern because implicitly static */

extern const T x=6; /* placed in read/write segment */

struct S {

static const T T x; /* placed in read/write segment */

};

}

Constant objects must not be redeclared with another linkage. The code in Example 3-7

produces a compile error.

Example 3-7 Compiler error

extern "C++" const T x;

extern "C++:read/write" const T x; /* error */

Note

Because C does not have the linkage specifications, you cannot use a

const

object

declared in C++ as

extern "C++:read/write"

from C.

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ARM VERSION 1.2 Fiche technique Page 76

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