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Bind(c): signed char is not a Fortran character type 

CFI_allocate and CFI_select_part were incorrectly treating
CFI_type_signed_char as a Fortran character type for the purpose of
deciding whether or not to use the elem_len argument.  It is a Fortran
integer type per table 18.2 in the 2018 Fortran standard.

Other functions in ISO_Fortran_binding.c appeared to handle this case
correctly already.

2021-07-15  Sandra Loosemore  <sandra@codesourcery.com>

libgfortran/
	* runtime/ISO_Fortran_binding.c (CFI_allocate): Don't use elem_len
	for CFI_type_signed_char.
	(CFI_select_part): Likewise.
This commit is contained in:
Sandra Loosemore 2021-07-22 15:15:50 -07:00
parent 8ed6cfbbee
commit e4966e1d1d
1 changed files with 6 additions and 7 deletions
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13
libgfortran/runtime/ISO_Fortran_binding.c
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@ -229,10 +229,9 @@ CFI_allocate (CFI_cdesc_t *dv, const CFI_index_t lower_bounds[],
}
}
/* If the type is a character, the descriptor's element length is replaced
by the elem_len argument. */
if (dv->type == CFI_type_char || dv->type == CFI_type_ucs4_char ||
dv->type == CFI_type_signed_char)
/* If the type is a Fortran character type, the descriptor's element
length is replaced by the elem_len argument. */
if (dv->type == CFI_type_char || dv->type == CFI_type_ucs4_char)
dv->elem_len = elem_len;
/* Dimension information and calculating the array length. */
@ -731,9 +730,9 @@ int CFI_select_part (CFI_cdesc_t *result, const CFI_cdesc_t *source,
}
}
/* Element length. */
if (result->type == CFI_type_char || result->type == CFI_type_ucs4_char ||
result->type == CFI_type_signed_char)
/* Element length is ignored unless result->type specifies a Fortran
character type. */
if (result->type == CFI_type_char || result->type == CFI_type_ucs4_char)
result->elem_len = elem_len;
if (unlikely (compile_options.bounds_check))