[fortran,patch] Extend symbol.c's check_conflict (PR29657)

[Tobias Burnus]

:ADDPATCH fortran:

This patch adds the following conflicts:

* FUNCTION name conflicts with SAVE
* SUBROUTINE name conflicts with DIMENSION
* PROGRAM and MODULE names conflicts with DIMENSION
Those should be obvious. I couldn't find a good reference, though.


* DUMMY ARGUMENTS conflict with ENTRY
This is explicitly forbidden in Fortran 2003
C1255

* DUMMY ARGUMENTS conflict with INTRINSIC
It it not stated as allowed - contrary to EXTERNAL where it is
explicitly allowed (see 12.3.2.2)

Test case tested with NAG f95, ifort, sunf95, which find all those
conflicts.

Bootstrapped and regtested on x86_64-unknown-linux-gnu.

Tobias


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

    * symbol.c (check_conflict): Add further conflicts.

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

    * gfortran.dg/conflicts.f90: Add.
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