path: root/gdb/testsuite/gdb.base/list.exp

# Copyright 1992-2017 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 this program.  If not, see <http://www.gnu.org/licenses/>.

# This file was written by Fred Fish. (fnf@cygnus.com)


standard_testfile list0.c list1.c

# Need to download the header to the host.
gdb_remote_download host ${srcdir}/${subdir}/list0.h

if {[prepare_for_testing "failed to prepare" $testfile [list $srcfile $srcfile2] \
	 {debug}]} {
    return -1
}

# Create and source the file that provides information about the compiler
# used to compile the test case.
if [get_compiler_info] {
    return -1
}

# The last line in the file.
set last_line [gdb_get_line_number "last line" "list0.c"]

# Regex matching the last line in the file.
set last_line_re "${last_line}\[ \t\]+} /\\* last line \\*/"

#
# Local utility proc just to set and verify listsize
# Return 1 if success, 0 if fail.
#

set set_listsize_count 0

proc set_listsize { arg } {
    global gdb_prompt
    global set_listsize_count

    incr set_listsize_count
    if [gdb_test_no_output "set listsize $arg" "setting listsize to $arg #$set_listsize_count"] {
	return 0
    }
    if { $arg == 0 } {
	set arg "unlimited"
    }

    if [gdb_test "show listsize" "Number of source lines.* is ${arg}.*" "show listsize $arg #$set_listsize_count"] {
	return 0
    }
    return 1
}

#
# Test display of listsize lines around a given line number.
#

proc test_listsize {} {
    global gdb_prompt
    global last_line_re

    # Show default size

    gdb_test "show listsize" "Number of source lines gdb will list by default is 10.*" "show default list size"
    
    # Show the default lines

    gdb_test "list" "(1\[ \t\]+#include \"list0.h\".*7\[ \t\]+x = 0;\r\n.*10\[ \t\]+foo .x\[+)\]+;)" "list default lines around main"

    # Ensure we can limit printouts to one line

    if [set_listsize 1] {
	gdb_test "list 1" "1\[ \t\]+#include \"list0.h\"" "list line 1 with listsize 1"
	gdb_test "list 2" "2\[ \t\]+" "list line 2 with listsize 1"
    }    

    # Try just two lines
    
    if [ set_listsize 2 ] {
	gdb_test "list 1" "1\[ \t\]+#include \"list0.h\"\r\n2\[ \t\]+" "list line 1 with listsize 2"
	gdb_test "list 2" "1\[ \t\]+#include \"list0.h\"\r\n2\[ \t\]+" "list line 2 with listsize 2"
	gdb_test "list 3" "2\[ \t\]+\r\n3\[ \t\]+int main \[)(\]+" "list line 3 with listsize 2"
    }

    # Try small listsize > 1 that is an odd number

    if [ set_listsize 3 ] {
	gdb_test "list 1" "1\[ \t\]+#include \"list0.h\".*3\[ \t\]+int main \[)(\]+" "list line 1 with listsize 3"
	gdb_test "list 2" "1\[ \t\]+#include \"list0.h\".*3\[ \t\]+int main \[)(\]+" "list line 2 with listsize 3"
	gdb_test "list 3" "2\[ \t\]+\r\n3\[ \t\]+int main \[(\]+\[)\]+\r\n4\[ \t\]+\{" "list line 3 with listsize 3"
    }

    # Try small listsize > 2 that is an even number.

    if [ set_listsize 4 ] then {
	gdb_test "list 1" "1\[ \t\]+#include \"list0.h\".*4\[ \t\]+\{" "list line 1 with listsize 4"
	gdb_test "list 2" "1\[ \t\]+#include \"list0.h\".*4\[ \t\]+\{" "list line 2 with listsize 4"
	
	gdb_test "list 3" "1\[ \t\]+#include \"list0.h\".*4\[ \t\]+\{" "list line 3 with listsize 4"
	gdb_test "list 4" "2\[ \t\]+\r\n.*5\[ \t\]+int x;.*" "list line 4 with listsize 4"
    }

    # Try a size larger than the entire file.

    if [ set_listsize 100 ] then {
	gdb_test "list 1" "1\[ \t\]+#include \"list0.h\".*\r\n${last_line_re}" "list line 1 with listsize 100"
	
	gdb_test "list 10" "1\[ \t\]+#include \"list0.h\".*\r\n${last_line_re}" "list line 10 with listsize 100"
    }

    # Try listsize of 0 which is special, and means unlimited.

    set_listsize 0
    gdb_test "list 1" "1\[ \t\]+#include .*\r\n${last_line_re}" "list line 1 with unlimited listsize"
}

#
# Test "list filename:number" for C include file
#

proc test_list_include_file {} {
    global gdb_prompt

    setup_xfail_format "COFF"
    gdb_test "list list0.h:1" "1\[ \t\]+/\[*\]+ An include file .*10\[ \t\]+bar \\(x\\+\\+\\);" "list line 1 in include file"

    setup_xfail_format "COFF"
    gdb_test "list list0.h:100" "Line number 95 out of range; .*list0.h has 3\[67\] lines." "list message for lines past EOF"
}

#
# Test "list filename:number" for C source file
#

proc test_list_filename_and_number {} {
    global gdb_prompt

    set testcnt 0

    send_gdb "list list0.c:1\n"
    gdb_expect {
	-re "1\[ \t\]+#include \"list0.h\".*10\[ \t\]+foo .x\[+)\]+;\r\n$gdb_prompt $" {
	    incr testcnt 
	}
	-re ".*$gdb_prompt $" { fail "list list0.c:1" ; gdb_suppress_tests }
	timeout { fail "list list0.c:1 (timeout)" ; gdb_suppress_tests }
    }
    send_gdb "list list0.c:10\n"
    gdb_expect {
	-re "5\[ \t\]+int x;.*14\[ \t\]+foo .x\[+)\]+;\r\n$gdb_prompt $" {
	    incr testcnt 
	}
	-re ".*$gdb_prompt $" { fail "list list.c:10" ; gdb_suppress_tests }
	timeout { fail "list list.c:10 (timeout)" ; gdb_suppress_tests }
    }
    send_gdb "list list1.c:1\n"
    gdb_expect {
	-re "1\[ \t\]+\#include.*4\[ \t\]+.*int oof\[ \t\]*\(.*\);\r\n.*$gdb_prompt $" {
	    incr testcnt 
	}
	-re ".*$gdb_prompt $" { fail "list list1.c:1" ; gdb_suppress_tests }
	timeout { fail "list list1.c:1 (timeout)" ; gdb_suppress_tests }
    }
    send_gdb "list list1.c:12\n"
    gdb_expect {
	-re "12\[ \t\]+long_line \[(\]+.*\[)\]+;.*13\[ \t\]+\}\r\n.*$gdb_prompt $" {
	    incr testcnt 
	}
	-re ".*$gdb_prompt $" { fail "list list1.c:12" ; gdb_suppress_tests }
	timeout { fail "list list1.c:12 (timeout)" ; gdb_suppress_tests }
    }
    pass "list filename:number ($testcnt tests)"
    gdb_stop_suppressing_tests
}

#
# Test "list function" for C source file
#

proc test_list_function {} {
    global gdb_prompt

    # gcc appears to generate incorrect debugging information for code
    # in include files, which breaks this test.
    # SunPRO cc is the second case below, it's also correct.
    gdb_test "list main" "(5\[ \t\]+int x;.*8\[ \t\]+foo \[(\]+.*\[)\]+;|1\[ \t\]+#include .*7\[ \t\]+x = 0;)" "list function in source file 1"

    # Ultrix gdb takes the second case below; it's also correct.
    # SunPRO cc is the third case.
    gdb_test "list bar" "(4\[ \t\]+void.*\[ \t\]*long_line.*;.*bar.*9\[ \t\]*.*|1\[ \t\]+void.*8\[ \t\]+\}|1\[ \t\]+void.*7\[ \t\]*long_line ..;|7\[ \t\]+void.*14\[ \t\]+\})" "list function in source file 2"

    # Test "list function" for C include file
    # Ultrix gdb is the second case, still correct.
    # SunPRO cc is the third case.
    gdb_test "list foo" "(3\[ \t\]+.*12\[ \t\]+bar \[(\]+.*\[)\]+;|2\[ \t\]+including file.*11\[ \t\]+bar \[(\]+.*\[)\]+;|1\[ \t\]+/. An include file.*10\[ \t\]+bar \[(\]+.*\[)\]+;)" "list function in include file"
}

proc test_list_forward {} {
    global gdb_prompt
    global last_line_re

    set testcnt 0

    send_gdb "list list0.c:10\n"
    gdb_expect {
	-re "5\[ \t\]+int x;.*14\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list list0.c:10" ; gdb_suppress_tests }
	timeout { fail "list list0.c:10 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "list\n"
    gdb_expect {
	-re "15\[ \t\]+foo \[(\]+.*\[)\]+;.*24\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 15-24" ; gdb_suppress_tests }
	timeout { fail "list 15-24 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "list\n"
    gdb_expect {
	-re "25\[ \t\]+foo \[(\]+.*\[)\]+;.*34\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 25-34" ; gdb_suppress_tests }
	timeout { fail "list 25-34 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "list\n"
    gdb_expect {
	-re "35\[ \t\]+foo \\(.*\\);.*${last_line_re}\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 35-42" ; gdb_suppress_tests }
	timeout { fail "list 35-42 (timeout)" ; gdb_suppress_tests }
    }

    pass "successive list commands to page forward ($testcnt tests)"

    gdb_test "list" "Line number 44 out of range; \[^\r\n\]+ has 43 lines\." \
	"end of file error after \"list\" command"

    gdb_stop_suppressing_tests
}

# Test that repeating the list linenum command doesn't print the same
# lines over again.  Note that this test makes sure that the argument
# linenum is dropped, when we repeat the previous command. 'x/5i $pc'
# works the same way.  

proc test_repeat_list_command {} {
    global gdb_prompt
    global last_line_re

    set testcnt 0

    send_gdb "list list0.c:10\n"
    gdb_expect {
	-re "5\[ \t\]+int x;.*14\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list list0.c:10" ; gdb_suppress_tests }
	timeout { fail "list list0.c:10 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "\n"
    gdb_expect {
	-re "15\[ \t\]+foo \[(\]+.*\[)\]+;.*24\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 15-24" ; gdb_suppress_tests }
	timeout { fail "list 15-24 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "\n"
    gdb_expect {
	-re "25\[ \t\]+foo \[(\]+.*\[)\]+;.*34\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 25-34" ; gdb_suppress_tests }
	timeout { fail "list 25-34 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "\n"
    gdb_expect {
	-re "35\[ \t\]+foo \\(.*\\);.*${last_line_re}\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 35-42" ; gdb_suppress_tests }
	timeout { fail "list 35-42 (timeout)" ; gdb_suppress_tests }
    }

    pass "repeat list commands to page forward using 'return' ($testcnt tests)"

    gdb_test "list" "Line number 44 out of range; \[^\r\n\]+ has 43 lines\." \
	"end of file error after using 'return' to repeat the list command"

    gdb_stop_suppressing_tests
}

proc test_list_backwards {} {
    global gdb_prompt

    set testcnt 0

    send_gdb "list list0.c:33\n"
    gdb_expect {
	-re "28\[ \t\]+foo \\(.*\\);.*37\[ \t\]+\}\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list list0.c:33" ; gdb_suppress_tests }
	timeout { fail "list list0.c:33 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "list -\n"
    gdb_expect {
	-re "18\[ \t\]+foo \[(\]+.*\[)\]+;.*27\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 18-27" ; gdb_suppress_tests }
	timeout { fail "list 18-27 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "list -\n"
    gdb_expect {
	-re "8\[ \t\]+foo \[(\]+.*\[)\]+;.*17\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 8-17" ; gdb_suppress_tests }
	timeout { fail "list 8-17 (timeout)" ; gdb_suppress_tests }
    }

    send_gdb "list -\n"
    gdb_expect {
	-re "1\[ \t\]+#include .*7\[ \t\]+x = 0;\r\n$gdb_prompt $" { incr testcnt }
	-re ".*$gdb_prompt $" { fail "list 1-7" ; gdb_suppress_tests }
	timeout { fail "list 1-7 (timeout)" ; gdb_suppress_tests }
    }

    pass "$testcnt successive \"list -\" commands to page backwards"

    gdb_test "list -" "Already at the start of .*\." \
	"beginning of file error after \"list -\" command"

    gdb_stop_suppressing_tests
}

#
# Test "list first,last"
#

proc test_list_range {} {
    global gdb_prompt
    global last_line_re
    global last_line

    gdb_test "list list0.c:2,list0.c:5" "2\[ \t\]+\r\n3\[ \t\]+int main \[)(\]+.*5\[ \t\]+int x;" "list range; filename:line1,filename:line2"

    gdb_test "list 2,5" "2\[ \t\]+\r\n3\[ \t\]+int main \[)(\]+.*5\[ \t\]+int x;" "list range; line1,line2"

#    gdb_test     "list -1,6" 	"Line number 0 out of range; .*list0.c has 39 lines." "list range; lower bound negative"

#    gdb_test     "list -100,-40" 	"Line number -60 out of range; .*list0.c has 39 lines." "list range; both bounds negative"

    set past_end [expr ${last_line} + 10]
    set much_past_end [expr ${past_end} + 10]

    gdb_test "list 30,${past_end}" "30\[ \t\]+foo \(.*\);.*${last_line_re}" "list range; upper bound past EOF"

    gdb_test "list ${past_end},${much_past_end}" "Line number ${past_end} out of range; .*list0.c has ${last_line} lines." "list range; both bounds past EOF"

    gdb_test "list list0.c:2,list1.c:17" "Specified start and end are in different files." "list range, must be same files"
}

#
# Test "list filename:function"
#

proc test_list_filename_and_function {} {
    global gdb_prompt
    global last_line_re

    set testcnt 0

    # gcc appears to generate incorrect debugging information for code
    # in include files, which breaks this test.
    # SunPRO cc is the second case below, it's also correct.
    send_gdb "list list0.c:main\n"
    gdb_expect {
	-re "1\[ \t\]+#include .*10\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re "5\[ \t\]+int x;.*14\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
	    pass "list function in source file 1"
	}
	-re ".*$gdb_prompt $" { fail "list list0.c:main" }
	timeout { fail "list list0.c:main (timeout)" }
    }

    # Not sure what the point of having this function be unused is.
    # AIX is legitimately removing it.
    setup_xfail "rs6000-*-aix*"
    send_gdb "list list0.c:unused\n"
    gdb_expect {
	-re "40\[ \t\]+unused.*${last_line_re}\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re "37.*42\[ \t\]+\}\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re ".*$gdb_prompt $" { fail "list list0.c:unused" }
	timeout { fail "list list0.c:unused (timeout)" }
    }
    clear_xfail "rs6000-*-aix*"

    # gcc appears to generate incorrect debugging information for code
    # in include files, which breaks this test.
    # Ultrix gdb is the second case, one line different but still correct.
    # SunPRO cc is the third case.
    setup_xfail "rs6000-*-*" 1804
    setup_xfail_format "COFF"
    send_gdb "list list0.h:foo\n"
    gdb_expect {
	-re "2\[ \t\]+including file.  This.*11\[ \t\]+bar \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re "1\[ \t\]+/. An include file.*10\[ \t\]+bar \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re "3\[ \t\]+.*12\[ \t\]+bar \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re "No source file named list0.h.\r\n$gdb_prompt $" {
	    fail "list list0.h:foo"
	}
	-re ".*$gdb_prompt $" { fail "list list0.h:foo" }
	timeout { fail "list list0.h:foo (timeout)" }
    }

    # Ultrix gdb is the second case.
    send_gdb "list list1.c:bar\n"
    gdb_expect {
	-re "4\[ \t\]+void.*13\[ \t\]+\}\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re "4\[ \t\]+void.*12\[ \t\]*long_line ..;\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re "4\[ \t\]+void.*11\[ \t\]*\r\n$gdb_prompt $" {
	    incr testcnt
	}
	-re ".*$gdb_prompt $" { fail "list list1.c:bar" }
	timeout { fail "list list1.c:bar (timeout)" }
    }

    # Not sure what the point of having this function be unused is.
    # AIX is legitimately removing it.
    setup_xfail "rs6000-*-aix*"
    send_gdb "list list1.c:unused\n"
    gdb_expect {
	-re "12\[ \t\]+long_line \[(\]\[)\];.*13\[ \t\]+\}\r\n.*$gdb_prompt $" {
	    incr testcnt
	}
	-re "14.*19\[ \t\]+\}\r\n.*$gdb_prompt $" {
	    incr testcnt
	}
	-re ".*$gdb_prompt $" { fail "list list1.c:unused" }
	timeout { fail "list list1.c:unused (timeout)" }
    }
    clear_xfail "rs6000-*-aix*"

    pass "list filename:function ($testcnt tests)"

    # Test with quoting.
    gdb_test "list 'list0.c:main'" "int main.*"

    # Test some invalid specs
    # The following test takes the FIXME result on most systems using
    # DWARF.  It fails to notice that main() is not in the file requested.
   
    setup_xfail "*-*-*"

# Does this actually work ANYWHERE?  I believe not, as this is an `aspect' of
# lookup_symbol(), where, when it is given a specific symtab which does not
# contain the requested symbol, it will subsequently search all of the symtabs
# for the requested symbol.

    gdb_test "list list0.c:foo" "Function \"foo\" not defined in .*list0.c" "list filename:function; wrong filename rejected"

    gdb_test "list foobar.c:main" "No source file named foobar.c.|Location not found" "list filename:function; nonexistant file"

    gdb_test "list list0.h:foobar" "Function \"foobar\" not defined in \"list0.h\"." "list filename:function; nonexistant function"

}

proc test_forward_search {} {
	global timeout

	gdb_test_no_output "set listsize 4"
	# On SunOS4, this gives us lines 19-22.  On AIX, it gives us
	# lines 20-23.  This depends on whether the line number of a function
	# is considered to be the openbrace or the first statement--either one
	# is acceptable.
	gdb_test "list long_line" "24\[ \t\]+long_line .*"

	gdb_test "search 4321" " not found"

	gdb_test "search 6789" "28\[ \t\]+oof .6789.;"

	# Test that GDB won't crash if the line being searched is extremely long.

	set oldtimeout $timeout
	set timeout [expr "$timeout + 300"]
	verbose "Timeout is now $timeout seconds" 2
	gdb_test "search 1234" ".*1234.*" "search extremely long line (> 5000 chars)"
	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2
}

proc test_only_end {} {
    gdb_test_no_output "set listsize 2"
    gdb_test "list 1" "list 1\r\n1\[ \t\]\[^\r\n\]*\r\n2\[ \t\]\[^\r\n\]*"
    gdb_test "list ,5" "list ,5\r\n4\[ \t\]\[^\r\n\]*\r\n5\[ \t\]\[^\r\n\]*"
}

proc test_list_invalid_args {} {
    global binfile

    clean_restart ${binfile}
    gdb_test "list -INVALID" \
	"invalid explicit location argument, \"-INVALID\"" \
	"first use of \"list -INVALID\""
    gdb_test "list -INVALID" \
	"invalid explicit location argument, \"-INVALID\"" \
	"second use of \"list -INVALID\""

    clean_restart ${binfile}
    gdb_test "list +INVALID" "Function \"\\+INVALID\" not defined." \
	"first use of \"list +INVALID\""
    gdb_test "list +INVALID" "Function \"\\+INVALID\" not defined." \
	"second use of \"list +INVALID\""
}

# Start with a fresh gdb.

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_file_cmd ${binfile}

gdb_test_no_output "set width 0"

test_listsize
get_debug_format
if [ set_listsize 10 ] then {
    test_list_include_file
    test_list_filename_and_number
    test_list_function
    test_list_forward
    test_list_backwards
    test_repeat_list_command
    test_list_range
    test_list_filename_and_function
    test_forward_search
    test_only_end
    test_list_invalid_args
}

# Follows tests that require execution.

# Build source listing pattern based on a line range spec string.  The
# range can be specificed as "START-END" indicating all lines in range
# (inclusive); or just "LINE", indicating just that line.

proc build_pattern { range_spec } {
    global line_re

    set range_list [split $range_spec -]
    set range_list_len [llength $range_list]

    set range_start [lindex $range_list 0]
    if { $range_list_len > 2 || $range_list_len < 1} {
	error "invalid range spec string: $range_spec"
    } elseif { $range_list_len == 2 } {
	set range_end [lindex $range_list 1]
    } else {
	set range_end $range_start
    }

    for {set i $range_start} {$i <= $range_end} {incr i} {
	append pattern "\r\n$i\[ \t\]\[^\r\n\]*"
    }

    verbose -log "pattern $pattern"
    return $pattern
}

# Test "list" command invocations right after stopping for an event.
# COMMAND is the actual list command, including arguments.  LISTSIZE1
# and LISTSIZE2 are the listsizes set just before and after running
# the program to the stop point.  COMMAND is issued twice.  The first
# time, the lines specificed by LINERANGE1 are expected; the second
# time, the lines specified by LINERANGE2 are expected.

proc test_list {command listsize1 listsize2 linerange1 linerange2} {
    with_test_prefix "$command after stop: $listsize1, $listsize2" {
	global binfile

	clean_restart $binfile
	if ![runto_main] then {
	    fail "can't run to main"
	    return
	}

	# Test changing the listsize both before nexting, and after
	# stopping, but before listing.  Only the second listsize
	# change should affect which lines are listed.
	with_test_prefix "before next" {
	    gdb_test_no_output "set listsize $listsize1"
	}
	gdb_test "next" "foo \\(.*"
	with_test_prefix "after next" {
	    gdb_test_no_output "set listsize $listsize2"
	}

	set pattern1 [build_pattern $linerange1]
	set pattern2 [build_pattern $linerange2]
	gdb_test "$command" "${pattern1}" "$command #1"
	gdb_test "$command" "${pattern2}" "$command #2"
    }
}


# The first "list" should center the listing around line 8, the stop
# line.
test_list "list" 1 10 "3-12" "13-22"

# Likewise.
test_list "list" 10 10 "3-12" "13-22"

# Likewise, but show only one line.  IOW, the first list should show
# line 8.  Note how the listsize is 10 at the time of the stop, but
# before any listing had been requested.  That should not affect the
# line range that is first listed.
test_list "list" 10 1 "8" "9"

# Likewise, but show two lines.
test_list "list" 10 2 "7-8" "9-10"

# Three lines.
test_list "list" 10 3 "7-9" "10-12"

# Now test backwards.  Just like "list", the first "list -" should
# center the listing around the stop line.
test_list "list -" 10 10 "3-12" "2"

# Likewise, but test showing 3 lines at a time.
test_list "list -" 10 3 "7-9" "4-6"

# 2 lines at a time.
test_list "list -" 10 2 "7-8" "5-6"

# Test listing one line only.  This case is a little special and
# starts showing the previous line immediately instead of repeating
# the current line.
test_list "list -" 10 1 "7" "6"

remote_exec build "rm -f list0.h"