[patch, fortran] Implement VOLATILE statement/attribute (PR 29601)

[Tobias Burnus]

Hi all,

Tobias Burnus wrote:
>   TREE_THIS_VOLATILE (decl) = 1
>   
Following the suggestion of Ian Lance Taylor I now also use
build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE);

Therefore, a tree dump now shows also the word "volatile".

Regression-tested on x86_64-unknown-linux-gnu (alias openSUSE Factory).

Tobias

fortran/
2006-11-04  Tobias Burnus  <burnus@net-b.de>

    fortran/29601
    * symbol.c (check_conflict, gfc_add_volatile): Add volatile support.
    * decl.c (match_attr_spec, gfc_match_volatile): Add volatile support.
    * gfortran.h (symbol_attribute): Add volatile_ to struct.
    * resolve.c (was_declared): Add volatile support.
    * trans-decl.c (gfc_finish_var_decl): Add volatile support.
    * match.h: Declare gfc_match_volatile.
    * parse.c (decode_statement): Recognize volatile.


testsuite/
2006-11-04  Tobias Burnus  <burnus@net-b.de>

    fortran/29601
    * volatile.f90: Add.
    * volatile2.f90: Add.
    * volatile3.f90: Add.

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