3d11c30a6e
In gdb.fortran/mixed-lang-stack.f90, we have fortran function mixed_func_1d:
...
subroutine mixed_func_1d(a, b, c, d, str)
use, intrinsic :: iso_c_binding, only: c_int, c_float, c_double
use, intrinsic :: iso_c_binding, only: c_float_complex
implicit none
integer(c_int) :: a
real(c_float) :: b
real(c_double) :: c
complex(c_float_complex) :: d
character(len=*) :: str
...
which we declare in C in gdb.fortran/mixed-lang-stack.c like this:
...
extern void mixed_func_1d_ (int *, float *, double *, complex float *,
char *, size_t);
...
The fortran string parameter str is passed as a char *, and an additional
argument str_ for the string length. The type used for the string length
argument is size_t, but for gcc 7 and earlier, the actual type is int
instead ( see
https://gcc.gnu.org/onlinedocs/gfortran/Argument-passing-conventions.html ).
Fix this by declaring the string length type depending on the gcc version:
...
#if !defined (__GNUC__) || __GNUC__ > 7
typedef size_t fortran_charlen_t;
#else
typedef int fortran_charlen_t;
...
Tested on x86_64-linux, with gcc-7 and gcc-8.
gdb/testsuite/ChangeLog:
2020-08-15 Tom de Vries <tdevries@suse.de>
* gdb.fortran/mixed-lang-stack.c (fortran_charlen_t): New type.
(mixed_func_1d_): Use fortran_charlen_t in decl.
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* Copyright 2020 Free Software Foundation, Inc.
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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 2 of the License, or
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(at your option) any later version.
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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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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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#include <stdio.h>
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#include <complex.h>
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#include <string.h>
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struct some_struct
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{
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float a, b;
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};
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/* See https://gcc.gnu.org/onlinedocs/gfortran/\
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Argument-passing-conventions.html. */
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#if !defined (__GNUC__) || __GNUC__ > 7
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typedef size_t fortran_charlen_t;
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#else
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typedef int fortran_charlen_t;
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#endif
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extern void mixed_func_1d_ (int *, float *, double *, complex float *,
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char *, fortran_charlen_t);
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void
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mixed_func_1c (int a, float b, double c, complex float d, char *f,
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struct some_struct *g)
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{
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printf ("a = %d, b = %f, c = %e, d = (%f + %fi)\n", a, b, c,
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creal(d), cimag(d));
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char *string = "this is a string from C";
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mixed_func_1d_ (&a, &b, &c, &d, string, strlen (string));
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}
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