[gfortran] Patch for PR 17590: Tagging intrinsics with standard version

[Janne Blomqvist <jblomqvi at cc dot hut dot fi>]

Hello,

The following patch tags all intrinsic subroutines and functions with
a standard version, and prints out error or warning messages if an
intrinsic does not exist in the standard the user has chosen (via the
-std flag). The intrinsics are flagged as belonging to either F77,
F95, F2003 or GNU. The available choices for the user has not changed
e.g. they are default (basically F95 + GNU extensions), f95, f2003 or
gnu (everything we have).

ChangeLog:

	PR fortran/17590

	* gfortran.h: Change GFC_STD_* flags to more appropriate
	ones. (struct gfc_intrinsic_isym): Add field for
	standard. 
	* intrinsic.c (add_sym): Add parameter for standard
	version. (add_sym_0): Pass standard parameter to
	add_sym. (add_sym_1): Likewise. (add_sym_0s):
	Likewise. (add_sym_1s): Likewise. (add_sym_1m):
	Likewise. (add_sym_2): Likewise. (add_sym_2s):
	Likewise. (add_sym_3): Likewise. (add_sym_3ml):
	Likewise. (add_sym_3red): Likewise. (add_sym_3s):
	Likewise. (add_sym_4): Likewise. (add_sym_4s):
	Likewise. (add_sym_5): Likewise. (add_sym_5s):
	Likewise. (add_functions): Add parameter to tell which standard an
	intrinsic belongs to. (add_subroutines):
	Likewise. (check_intrinsic_standard): New
	function. (gfc_intrinsic_func_interface): Add call to
	check_intrinsic_standard. (gfc_intrinsic_sub_interface): Likewise.
	* options.c (gfc_init_options): Change to use new GFC_STD_*
	flags. (gfc_handle_option): Likewise.


-- 
Janne Blomqvist

Attachment: pr17590.patch
Description: Text document