[Bug fortran/42888] [4.5 Regression] ICE in fold_convert_loc, at fold-const.c:2670

[burnus at gcc dot gnu dot org]

------- Comment #13 from burnus at gcc dot gnu dot org  2010-01-28 18:44 -------
(In reply to comment #11)
> I get a suspicious error:
>
> Error: The NULL in the derived type constructor at (1) is being applied to
> component 'ptr', which is neither a POINTER nor ALLOCATABLE

The problem is that for both
  type(c_ptr) :: ptr => C_NULL_PTR
and for
  integer, pointer :: ptr => null()
the expression type EXPR_NULL is used. At some point when going from the
front-end representation (gfc_symbol, gfc_expr) to the middle-end
representation (tree), the derived type non-pointer "type(c_ptr)" will be
converted to a scalar pointer. Seemingly, by moving code from resolve.c to
trans*.c you have an ordering problem with regards to type(c_(fun)ptr).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42888