libstdc++-v3/testsuite/lib/gdb-test.exp - gcc - Git at Google

 #   Copyright (C) 2009-2021 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/>.

 global gdb_tests
 set gdb_tests {}

 # Scan a file for markers and fill in the gdb_marker array for that
 # file.  Any error in this script is simply thrown; errors here are
 # programming errors in the test suite itself and should not be
 # caught.
 proc scan_gdb_markers {filename} {
     global gdb_markers

     if {[info exists gdb_markers($filename,-)]} {
 	return
     }

     set fd [open $filename]
     set lineno 1
     while {! [eof $fd]} {
 	set line [gets $fd]
 	if {[regexp -- "Mark (\[a-zA-Z0-9\]+)" $line ignore marker]} {
 	    set gdb_markers($filename,$marker) $lineno
 	}
 	incr lineno
     }
     close $fd

     set gdb_markers($filename,-) {}
 }

 # Find a marker in a source file, and return the marker's line number.
 proc get_line_number {filename marker} {
     global gdb_markers

     scan_gdb_markers $filename
     return $gdb_markers($filename,$marker)
 }

 # Make note of a gdb test.  A test consists of a variable name and an
 # expected result.
 proc note-test {var result} {
     global gdb_tests

     lappend gdb_tests $var $result print 0
 }

 # A test that uses a regular expression.  This is like note-test, but
 # the result is a regular expression that is matched against the
 # output.
 proc regexp-test {var result} {
     global gdb_tests

     lappend gdb_tests $var $result print 1
 }

 # A test of 'whatis'.  This tests a type rather than a variable.
 proc whatis-test {var result} {
     global gdb_tests

     lappend gdb_tests $var $result whatis 0
 }

 # A test of 'whatis' that uses a regular expression. This tests a type rather
 # than a variable.
 proc whatis-regexp-test {var result} {
     global gdb_tests

     lappend gdb_tests $var $result whatis 1
 }

 # Utility for testing variable values using gdb, invoked via dg-final.
 # Tests all tests indicated by note-test and regexp-test.
 #
 # Argument 0 is the marker on which to put a breakpoint
 # Argument 2 handles expected failures and the like
 proc gdb-test { marker {selector {}} {load_xmethods 0} } {
     if { ![isnative] || [is_remote target] } { return }

     if {[string length $selector] > 0} {
 	switch [dg-process-target $selector] {
 	    "S" { }
 	    "N" { return }
 	    "F" { setup_xfail "*-*-*" }
 	    "P" { }
 	}
     }

     set do_whatis_tests [gdb_batch_check "python print(gdb.type_printers)" \
 			   "\\\[\\\]"]
     if {!$do_whatis_tests} {
 	send_log "skipping 'whatis' tests - gdb too old"
     }

     # This assumes that we are three frames down from dg-test, and that
     # it still stores the filename of the testcase in a local variable "name".
     # A cleaner solution would require a new DejaGnu release.
     upvar 2 name testcase
     upvar 2 prog prog

     set line [get_line_number $prog $marker]

     set gdb_name $::env(GUALITY_GDB_NAME)
     set testname "$testcase"
     set output_file "[file rootname [file tail $prog]].exe"
     set cmd_file "[file rootname [file tail $prog]].gdb"

     global srcdir
     set printer_code [file join $srcdir .. python libstdcxx v6 printers.py]
     set xmethod_code [file join $srcdir .. python libstdcxx v6 xmethods.py]

     global gdb_tests

     set fd [open $cmd_file "w"]
     # We don't want the system copy of the pretty-printers loaded
     puts $fd "set auto-load no"
     # Now that we've disabled auto-load, it's safe to set the target file
     puts $fd "file ./$output_file"
     # Load & register *our* copy of the pretty-printers
     puts $fd "source $printer_code"
     puts $fd "python register_libstdcxx_printers(None)"
     if { $load_xmethods } {
 	# Load a& register xmethods.
 	puts $fd "source $xmethod_code"
 	puts $fd "python register_libstdcxx_xmethods(None)"
     }
     # And start the program
     puts $fd "break $line"
     puts $fd "run"
     # So we can verify that we're using the right libs ...
     puts $fd "info share"

     set count 0
     foreach {var result kind rexp} $gdb_tests {
 	incr count
 	set gdb_var($count) $var
 	set gdb_expected($count) $result
 	if {$kind == "whatis"} {
 	    if {$do_whatis_tests} {
 		set gdb_is_type($count) 1
 		set gdb_is_regexp($count) $rexp
 		set gdb_command($count) "whatis $var"
 	    } else {
 	        unsupported "$testname"
 	        close $fd
 	        return
 	    }
 	} else {
 	    set gdb_is_type($count) 0
 	    set gdb_is_regexp($count) $rexp
 	    set gdb_command($count) "print $var"
 	}
 	puts $fd $gdb_command($count)
     }
     set gdb_tests {}

     puts $fd "quit"
     close $fd

     set res [remote_spawn target "$gdb_name -nx -nw -quiet -batch -x $cmd_file "]
     if { $res < 0 || $res == "" } {
 	unsupported "$testname"
 	return
     }

     set test_counter 0
     remote_expect target [timeout_value] {
 	-re {^(type|\$([0-9]+)) = ([^\n\r]*)[\n\r]+} {
 	    send_log "got: $expect_out(buffer)"

 	    incr test_counter
 	    set first $expect_out(3,string)

 	    if {$gdb_is_type($test_counter)} {
 		if {$expect_out(1,string) != "type"} {
 		    error "gdb failure"
 		}
 	    }

 	    if {$gdb_is_regexp($test_counter)} {
 		set match [regexp -- $gdb_expected($test_counter) $first]
 	    } else {
 		set match [expr {![string compare $first \
 				     $gdb_expected($test_counter)]}]
 	    }

 	    if {$match} {
 		pass "$testname $gdb_command($test_counter)"
 	    } else {
 		fail "$testname $gdb_command($test_counter)"
 		verbose "     got =>$first<="
 		verbose "expected =>$gdb_expected($test_counter)<="
 	    }

 	    if {$test_counter == $count} {
 		remote_close target
 		return
 	    } else {
 		exp_continue
 	    }
 	}

 	-re {Python scripting is not supported in this copy of GDB.[\n\r]+} {
 	    unsupported "$testname"
 	    remote_close target
 	    return
 	}

 	-re {Error while executing Python code.[\n\r]} {
 	    fail "$testname"
 	    remote_close target
 	    return
 	}

 	-re {^[^$][^\n\r]*[\n\r]+} {
 	    send_log "skipping: $expect_out(buffer)"
 	    exp_continue
 	}

 	timeout {
 	    unsupported "$testname"
 	    remote_close target
 	    return
 	}
     }

     remote_close target
     unsupported "$testname"
     return
 }

 # Invoke gdb with a command and pattern-match the output.
 proc gdb_batch_check {command pattern} {
     set gdb_name $::env(GUALITY_GDB_NAME)
     set cmd "$gdb_name -nw -nx -quiet -batch -ex \"$command\""
     send_log "Spawning: $cmd\n"
     if [catch { set res [remote_spawn target "$cmd"] } ] {
 	return 0
     }
     if { $res < 0 || $res == "" } {
 	return 0
     }

     remote_expect target [timeout_value] {
 	-re $pattern {
 	    return 1
 	}

 	-re {^[^\n\r]*[\n\r]+} {
 	    verbose "skipping: $expect_out(buffer)"
 	    exp_continue
 	}

 	timeout {
 	    remote_close target
 	    return 0
 	}
     }

     remote_close target
     return 0
 }

 # Check for a new-enough version of gdb.  The pretty-printer tests
 # require gdb 7.3, but we don't want to test versions, so instead we
 # check for the python "lookup_global_symbol" method, which is in 7.3
 # but not earlier versions.
 # Return 1 if the version is ok, 0 otherwise.
 proc gdb_version_check {} {
     if { ![isnative] || [is_remote target] } { return 0 }

     return [gdb_batch_check "python print(gdb.lookup_global_symbol)" \
 	      "<built-in function lookup_global_symbol>"]
 }

 # Check for a version of gdb which supports xmethod tests.  It is done
 # in a manner similar to the check for a version of gdb which supports the
 # pretty-printer tests below.
 proc gdb_version_check_xmethods {} {
     if { ![isnative] || [is_remote target] } { return 0 }

     return [gdb_batch_check \
 	      "python import gdb.xmethod; print(gdb.xmethod.XMethod)" \
 	      "<class 'gdb\\.xmethod\\.XMethod'>"]
 }

 # Like dg-runtest but keep the .exe around.  dg-test has an option for
 # this but there is no way to pass it through dg-runtest.
 proc gdb-dg-runtest {args} {
   global dg-interpreter-batch-mode
   set saved-dg-interpreter-batch-mode ${dg-interpreter-batch-mode}
   set dg-interpreter-batch-mode 1

   eval dg-runtest $args

   set dg-interpreter-batch-mode ${saved-dg-interpreter-batch-mode}
 }
	# Copyright (C) 2009-2021 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/>.

	global gdb_tests
	set gdb_tests {}

	# Scan a file for markers and fill in the gdb_marker array for that
	# file. Any error in this script is simply thrown; errors here are
	# programming errors in the test suite itself and should not be
	# caught.
	proc scan_gdb_markers {filename} {
	global gdb_markers

	if {[info exists gdb_markers($filename,-)]} {
	return
	}

	set fd [open $filename]
	set lineno 1
	while {! [eof $fd]} {
	set line [gets $fd]
	if {[regexp -- "Mark (\[a-zA-Z0-9\]+)" $line ignore marker]} {
	set gdb_markers($filename,$marker) $lineno
	}
	incr lineno
	}
	close $fd

	set gdb_markers($filename,-) {}
	}

	# Find a marker in a source file, and return the marker's line number.
	proc get_line_number {filename marker} {
	global gdb_markers

	scan_gdb_markers $filename
	return $gdb_markers($filename,$marker)
	}

	# Make note of a gdb test. A test consists of a variable name and an
	# expected result.
	proc note-test {var result} {
	global gdb_tests

	lappend gdb_tests $var $result print 0
	}

	# A test that uses a regular expression. This is like note-test, but
	# the result is a regular expression that is matched against the
	# output.
	proc regexp-test {var result} {
	global gdb_tests

	lappend gdb_tests $var $result print 1
	}

	# A test of 'whatis'. This tests a type rather than a variable.
	proc whatis-test {var result} {
	global gdb_tests

	lappend gdb_tests $var $result whatis 0
	}

	# A test of 'whatis' that uses a regular expression. This tests a type rather
	# than a variable.
	proc whatis-regexp-test {var result} {
	global gdb_tests

	lappend gdb_tests $var $result whatis 1
	}

	# Utility for testing variable values using gdb, invoked via dg-final.
	# Tests all tests indicated by note-test and regexp-test.
	#
	# Argument 0 is the marker on which to put a breakpoint
	# Argument 2 handles expected failures and the like
	proc gdb-test { marker {selector {}} {load_xmethods 0} } {
	if { ![isnative] \|\| [is_remote target] } { return }

	if {[string length $selector] > 0} {
	switch [dg-process-target $selector] {
	"S" { }
	"N" { return }
	"F" { setup_xfail "--*" }
	"P" { }
	}
	}

	set do_whatis_tests [gdb_batch_check "python print(gdb.type_printers)" \
	"\\\[\\\]"]
	if {!$do_whatis_tests} {
	send_log "skipping 'whatis' tests - gdb too old"
	}

	# This assumes that we are three frames down from dg-test, and that
	# it still stores the filename of the testcase in a local variable "name".
	# A cleaner solution would require a new DejaGnu release.
	upvar 2 name testcase
	upvar 2 prog prog

	set line [get_line_number $prog $marker]

	set gdb_name $::env(GUALITY_GDB_NAME)
	set testname "$testcase"
	set output_file "[file rootname [file tail $prog]].exe"
	set cmd_file "[file rootname [file tail $prog]].gdb"

	global srcdir
	set printer_code [file join $srcdir .. python libstdcxx v6 printers.py]
	set xmethod_code [file join $srcdir .. python libstdcxx v6 xmethods.py]

	global gdb_tests

	set fd [open $cmd_file "w"]
	# We don't want the system copy of the pretty-printers loaded
	puts $fd "set auto-load no"
	# Now that we've disabled auto-load, it's safe to set the target file
	puts $fd "file ./$output_file"
	# Load & register our copy of the pretty-printers
	puts $fd "source $printer_code"
	puts $fd "python register_libstdcxx_printers(None)"
	if { $load_xmethods } {
	# Load a& register xmethods.
	puts $fd "source $xmethod_code"
	puts $fd "python register_libstdcxx_xmethods(None)"
	}
	# And start the program
	puts $fd "break $line"
	puts $fd "run"
	# So we can verify that we're using the right libs ...
	puts $fd "info share"

	set count 0
	foreach {var result kind rexp} $gdb_tests {
	incr count
	set gdb_var($count) $var
	set gdb_expected($count) $result
	if {$kind == "whatis"} {
	if {$do_whatis_tests} {
	set gdb_is_type($count) 1
	set gdb_is_regexp($count) $rexp
	set gdb_command($count) "whatis $var"
	} else {
	unsupported "$testname"
	close $fd
	return
	}
	} else {
	set gdb_is_type($count) 0
	set gdb_is_regexp($count) $rexp
	set gdb_command($count) "print $var"
	}
	puts $fd $gdb_command($count)
	}
	set gdb_tests {}

	puts $fd "quit"
	close $fd

	set res [remote_spawn target "$gdb_name -nx -nw -quiet -batch -x $cmd_file "]
	if { $res < 0 \|\| $res == "" } {
	unsupported "$testname"
	return
	}

	set test_counter 0
	remote_expect target [timeout_value] {
	-re {^(type\|\$([0-9]+)) = ([^\n\r]*)[\n\r]+} {
	send_log "got: $expect_out(buffer)"

	incr test_counter
	set first $expect_out(3,string)

	if {$gdb_is_type($test_counter)} {
	if {$expect_out(1,string) != "type"} {
	error "gdb failure"
	}
	}

	if {$gdb_is_regexp($test_counter)} {
	set match [regexp -- $gdb_expected($test_counter) $first]
	} else {
	set match [expr {![string compare $first \
	$gdb_expected($test_counter)]}]
	}

	if {$match} {
	pass "$testname $gdb_command($test_counter)"
	} else {
	fail "$testname $gdb_command($test_counter)"
	verbose " got =>$first<="
	verbose "expected =>$gdb_expected($test_counter)<="
	}

	if {$test_counter == $count} {
	remote_close target
	return
	} else {
	exp_continue
	}
	}

	-re {Python scripting is not supported in this copy of GDB.[\n\r]+} {
	unsupported "$testname"
	remote_close target
	return
	}

	-re {Error while executing Python code.[\n\r]} {
	fail "$testname"
	remote_close target
	return
	}

	-re {^[^$][^\n\r]*[\n\r]+} {
	send_log "skipping: $expect_out(buffer)"
	exp_continue
	}

	timeout {
	unsupported "$testname"
	remote_close target
	return
	}
	}

	remote_close target
	unsupported "$testname"
	return
	}

	# Invoke gdb with a command and pattern-match the output.
	proc gdb_batch_check {command pattern} {
	set gdb_name $::env(GUALITY_GDB_NAME)
	set cmd "$gdb_name -nw -nx -quiet -batch -ex \"$command\""
	send_log "Spawning: $cmd\n"
	if [catch { set res [remote_spawn target "$cmd"] } ] {
	return 0
	}
	if { $res < 0 \|\| $res == "" } {
	return 0
	}

	remote_expect target [timeout_value] {
	-re $pattern {
	return 1
	}

	-re {^[^\n\r]*[\n\r]+} {
	verbose "skipping: $expect_out(buffer)"
	exp_continue
	}

	timeout {
	remote_close target
	return 0
	}
	}

	remote_close target
	return 0
	}

	# Check for a new-enough version of gdb. The pretty-printer tests
	# require gdb 7.3, but we don't want to test versions, so instead we
	# check for the python "lookup_global_symbol" method, which is in 7.3
	# but not earlier versions.
	# Return 1 if the version is ok, 0 otherwise.
	proc gdb_version_check {} {
	if { ![isnative] \|\| [is_remote target] } { return 0 }

	return [gdb_batch_check "python print(gdb.lookup_global_symbol)" \
	"<built-in function lookup_global_symbol>"]
	}

	# Check for a version of gdb which supports xmethod tests. It is done
	# in a manner similar to the check for a version of gdb which supports the
	# pretty-printer tests below.
	proc gdb_version_check_xmethods {} {
	if { ![isnative] \|\| [is_remote target] } { return 0 }

	return [gdb_batch_check \
	"python import gdb.xmethod; print(gdb.xmethod.XMethod)" \
	"<class 'gdb\\.xmethod\\.XMethod'>"]
	}

	# Like dg-runtest but keep the .exe around. dg-test has an option for
	# this but there is no way to pass it through dg-runtest.
	proc gdb-dg-runtest {args} {
	global dg-interpreter-batch-mode
	set saved-dg-interpreter-batch-mode ${dg-interpreter-batch-mode}
	set dg-interpreter-batch-mode 1

	eval dg-runtest $args

	set dg-interpreter-batch-mode ${saved-dg-interpreter-batch-mode}
	}