[Bug fortran/41034] New: [4.5 Regression] Wrongly rejected proc pointer assignment with CDECL (compiler-directive_1.f90)

[burnus at gcc dot gnu dot org]

http://gcc.gnu.org/ml/fortran/2009-08/msg00095.html

Excess errors:
/usr/home/sgk/gcc/gcc4x/gcc/testsuite/gfortran.dg/compiler-directive_1.f90:33:
Error: Mismatch in the procedure pointer assignment at (1): mismatch in the
calling convention
/usr/home/sgk/gcc/gcc4x/gcc/testsuite/gfortran.dg/compiler-directive_1.f90:34:
Error: Mismatch in the procedure pointer assignment at (1): mismatch in the
calling convention

Reduced example: Should work, but shows:
  ptr => sub
         1
  Error: Mismatch in the procedure pointer assignment at (1): mismatch in the
         calling convention

(gdb) p lvalue->symtree->n.sym->attr.ext_attr
$4 = 17
(gdb) p rvalue->symtree->n.sym->attr.ext_attr
$5 = 15

EXT_ATTR_DLLIMPORT = 0  ->  1<<0 =  1
EXT_ATTR_DLLEXPORT = 1  ->  1<<1 =  2
EXT_ATTR_STDCALL   = 2  ->  1<<2 =  4
EXT_ATTR_CDECL     = 3  ->  1<<3 =  8
EXT_ATTR_FASTCALL  = 4  ->  1<<4 = 16

Thus we have for LHS: EXT_ATTR_FASTCALL | EXT_ATTR_DLLIMPORT
         and for RHS: the first 4 items
In other words: Seemingly random data.

 interface
   subroutine sub()
     !GCC$ ATTRIBUTES CDECL :: sub
   end subroutine sub
 end interface
 procedure(), pointer :: ptr
 !GCC$ ATTRIBUTES CDECL :: sub
 ptr => sub
end


Presumably introduced with:

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=150589
Log:
2009-08-05  Tobias Burnus  <bur...@net-b.de>

        PR fortran/40955


-- 
           Summary: [4.5 Regression] Wrongly rejected proc pointer
                    assignment with CDECL (compiler-directive_1.f90)
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41034