#   Copyright (C) 1997-2025 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

# We need to make sure that additional_* are cleared out after every
# test.  It is not enough to clear them out *before* the next test run
# because gcc-target-compile gets run directly from some .exp files
# (outside of any test).  (Those uses should eventually be eliminated.)

# Because the DG framework doesn't provide a hook that is run at the
# end of a test, we must replace dg-test with a wrapper.

if { [info procs saved-dg-test] == [list] } {
    rename dg-test saved-dg-test

    # Helper function for cleanups that should happen after the call
    # to the real dg-test, whether or not it returns normally, or
    # fails with an error.
    proc cleanup-after-saved-dg-test { } {
	global additional_files
	global additional_sources
	global additional_sources_used
	global additional_prunes
	global compiler_conditional_xfail_data
	global shouldfail
	global expect_ice
	global testname_with_flags
	global set_target_env_var
	global set_compiler_env_var
	global saved_compiler_env_var
	global keep_saved_temps_suffixes
	global nn_line_numbers_enabled
	global multiline_expected_outputs
	global freeform_regexps
	global save_linenr_varnames
	global output-file

	set additional_files ""
	set additional_sources ""
	set additional_sources_used ""
	set additional_prunes ""
	set shouldfail 0
	set expect_ice 0
	if [info exists set_target_env_var] {
	    unset set_target_env_var
	}
	if [info exists set_compiler_env_var] {
	    restore-compiler-env-var
	    unset set_compiler_env_var
	    unset saved_compiler_env_var
	}
	if [info exists keep_saved_temps_suffixes] {
	    unset keep_saved_temps_suffixes
	}
	unset_timeout_vars
	if [info exists compiler_conditional_xfail_data] {
	    unset compiler_conditional_xfail_data
	}
	if [info exists testname_with_flags] {
	    unset testname_with_flags
	}
	if [info exists output-file] {
	    unset output-file
	}
	set nn_line_numbers_enabled 0
	set multiline_expected_outputs []
	set freeform_regexps []

	if { [info exists save_linenr_varnames] } {
	    foreach varname $save_linenr_varnames {
		# Cleanup varname
		eval global $varname
		eval unset $varname

		# Cleanup varname_used, or generate defined-but-not-used
		# warning.
		set varname_used used_$varname
		eval global $varname_used
		eval set used [info exists $varname_used]
		if { $used } {
		    eval unset $varname_used
		} else {
		    regsub {^saved_linenr_} $varname "" org_varname
		    warning "dg-line var $org_varname defined, but not used"
		}
	    }
	    unset save_linenr_varnames
	}

	initialize_prune_notes
    }

    proc dg-test { args } {
	global errorInfo

	if { [ catch { eval saved-dg-test $args } errmsg ] } {
	    set saved_info $errorInfo
	    cleanup-after-saved-dg-test
	    error $errmsg $saved_info
	}
	cleanup-after-saved-dg-test
    }
}

proc initialize_prune_notes { } {
    global prune_notes
    set prune_notes 1
}