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2.25 Pragma Common_Object

Syntax:

    pragma Common_Object (
         [Internal =>] LOCAL_NAME
      [, [External =>] EXTERNAL_SYMBOL]
      [, [Size     =>] EXTERNAL_SYMBOL] );
    
    EXTERNAL_SYMBOL ::=
      IDENTIFIER
    | static_string_EXPRESSION

This pragma enables the shared use of variables stored in overlaid linker areas corresponding to the use of COMMON in Fortran. The single object LOCAL_NAME is assigned to the area designated by the External argument. You may define a record to correspond to a series of fields. The Size argument is syntax checked in GNAT, but otherwise ignored.

Common_Object is not supported on all platforms. If no support is available, then the code generator will issue a message indicating that the necessary attribute for implementation of this pragma is not available.