Pragma Common_Object

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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.