4d00f5d8f6
The 'kind' keyword has two uses in Fortran, it is the name of a builtin intrinsic function, and it is also a keyword used to create a type of a specific kind. This commit adds support for using kind as an intrinsic function, and also adds some initial support for using kind to create types of a specific kind. This commit only allows the creation of the type 'character(kind=1)', however, it will be easy enough to extend this in future to support more type kinds. The kind of any expression can be queried using the kind intrinsic function. At the moment the kind returned corresponds to the size of the type, this matches how gfortran handles kinds. However, the correspondence between kind and type size depends on the compiler and/or the specific target, so this might not be correct for everyone. If we want to support different compilers/targets in future the code to compute the kind from a type will need to be updated. gdb/ChangeLog: * expprint.c (dump_subexp_body_standard): Support UNOP_KIND. * f-exp.y: Define 'KIND' token. (exp): New pattern for KIND expressions. (ptype): Handle types with a kind extension. (direct_abs_decl): Extend to spot kind extensions. (f77_keywords): Add 'kind' to the list. (push_kind_type): New function. (convert_to_kind_type): New function. * f-lang.c (evaluate_subexp_f): Support UNOP_KIND. * parse.c (operator_length_standard): Likewise. * parser-defs.h (enum type_pieces): Add tp_kind. * std-operator.def: Add UNOP_KIND. gdb/testsuite/ChangeLog: * gdb.fortran/intrinsics.exp: New file. * gdb.fortran/intrinsics.f90: New file. * gdb.fortran/type-kinds.exp: New file.
39 lines
1 KiB
Fortran
39 lines
1 KiB
Fortran
! Copyright 2019 Free Software Foundation, Inc.
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!
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! This program is free software; you can redistribute it and/or modify
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! it under the terms of the GNU General Public License as published by
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! the Free Software Foundation; either version 3 of the License, or
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! (at your option) any later version.
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!
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! This program is distributed in the hope that it will be useful,
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! but WITHOUT ANY WARRANTY; without even the implied warranty of
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! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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! GNU General Public License for more details.
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!
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! You should have received a copy of the GNU General Public License
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! along with this program; if not, see <http://www.gnu.org/licenses/>.
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program test
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logical :: l
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logical (kind=1) :: l1
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logical (kind=2) :: l2
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logical (kind=4) :: l4
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logical (kind=8) :: l8
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type :: a_struct
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logical :: a1
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logical :: a2
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end type a_struct
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type (a_struct) :: s1
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s1%a1 = .TRUE.
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s1%a2 = .FALSE.
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l1 = .TRUE.
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l2 = .TRUE.
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l4 = .TRUE.
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l8 = .TRUE.
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l = .FALSE. ! stop-here
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end
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