gdb/testsuite/gdb.base/list.exp

   1 # Copyright 1992-2022 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file was written by Fred Fish. (fnf@cygnus.com)
  17
  18
  19 standard_testfile list0.c list1.c
  20
  21 # Need to download the header to the host.
  22 gdb_remote_download host ${srcdir}/${subdir}/list0.h
  23
  24 if {[prepare_for_testing "failed to prepare" $testfile [list $srcfile $srcfile2] \
  25          {debug}]} {
  26     return -1
  27 }
  28
  29 # Create and source the file that provides information about the compiler
  30 # used to compile the test case.
  31 if [get_compiler_info] {
  32     return -1
  33 }
  34
  35 # The last line in the file.
  36 set last_line [gdb_get_line_number "last line" "list0.c"]
  37
  38 # Regex matching the last line in the file.
  39 set last_line_re "${last_line}\[ \t\]+} /\\* last line \\*/"
  40
  41 #
  42 # Local utility proc just to set and verify listsize
  43 # Return 1 if success, 0 if fail.
  44 #
  45
  46 set set_listsize_count 0
  47
  48 proc set_listsize { arg } {
  49     global gdb_prompt
  50     global set_listsize_count
  51
  52     incr set_listsize_count
  53     if [gdb_test_no_output "set listsize $arg" "setting listsize to $arg #$set_listsize_count"] {
  54         return 0
  55     }
  56     if { $arg == 0 } {
  57         set arg "unlimited"
  58     }
  59
  60     if [gdb_test "show listsize" "Number of source lines.* is ${arg}.*" "show listsize $arg #$set_listsize_count"] {
  61         return 0
  62     }
  63     return 1
  64 }
  65
  66 #
  67 # Test display of listsize lines around a given line number.
  68 #
  69
  70 proc test_listsize {} {
  71     global gdb_prompt
  72     global last_line_re
  73
  74     # Show default size
  75
  76     gdb_test "show listsize" "Number of source lines gdb will list by default is 10.*" "show default list size"
  77
  78     # Show the default lines
  79
  80     gdb_test "list" "(1\[ \t\]+#include \"list0.h\".*7\[ \t\]+x = 0;\r\n.*10\[ \t\]+foo .x\[+)\]+;)" "list default lines around main"
  81
  82     # Ensure we can limit printouts to one line
  83
  84     if [set_listsize 1] {
  85         gdb_test "list 1" "1\[ \t\]+#include \"list0.h\"" "list line 1 with listsize 1"
  86         gdb_test "list 2" "2\[ \t\]+" "list line 2 with listsize 1"
  87     }
  88
  89     # Try just two lines
  90
  91     if [ set_listsize 2 ] {
  92         gdb_test "list 1" "1\[ \t\]+#include \"list0.h\"\r\n2\[ \t\]+" "list line 1 with listsize 2"
  93         gdb_test "list 2" "1\[ \t\]+#include \"list0.h\"\r\n2\[ \t\]+" "list line 2 with listsize 2"
  94         gdb_test "list 3" "2\[ \t\]+\r\n3\[ \t\]+int main \[)(\]+" "list line 3 with listsize 2"
  95     }
  96
  97     # Try small listsize > 1 that is an odd number
  98
  99     if [ set_listsize 3 ] {
 100         gdb_test "list 1" "1\[ \t\]+#include \"list0.h\".*3\[ \t\]+int main \[)(\]+" "list line 1 with listsize 3"
 101         gdb_test "list 2" "1\[ \t\]+#include \"list0.h\".*3\[ \t\]+int main \[)(\]+" "list line 2 with listsize 3"
 102         gdb_test "list 3" "2\[ \t\]+\r\n3\[ \t\]+int main \[(\]+\[)\]+\r\n4\[ \t\]+\{" "list line 3 with listsize 3"
 103     }
 104
 105     # Try small listsize > 2 that is an even number.
 106
 107     if [ set_listsize 4 ] then {
 108         gdb_test "list 1" "1\[ \t\]+#include \"list0.h\".*4\[ \t\]+\{" "list line 1 with listsize 4"
 109         gdb_test "list 2" "1\[ \t\]+#include \"list0.h\".*4\[ \t\]+\{" "list line 2 with listsize 4"
 110
 111         gdb_test "list 3" "1\[ \t\]+#include \"list0.h\".*4\[ \t\]+\{" "list line 3 with listsize 4"
 112         gdb_test "list 4" "2\[ \t\]+\r\n.*5\[ \t\]+int x;.*" "list line 4 with listsize 4"
 113     }
 114
 115     # Try a size larger than the entire file.
 116
 117     if [ set_listsize 100 ] then {
 118         gdb_test "list 1" "1\[ \t\]+#include \"list0.h\".*\r\n${last_line_re}" "list line 1 with listsize 100"
 119
 120         gdb_test "list 10" "1\[ \t\]+#include \"list0.h\".*\r\n${last_line_re}" "list line 10 with listsize 100"
 121     }
 122
 123     # Try listsize of 0 which is special, and means unlimited.
 124
 125     set_listsize 0
 126     gdb_test "list 1" "1\[ \t\]+#include .*\r\n${last_line_re}" "list line 1 with unlimited listsize"
 127 }
 128
 129 #
 130 # Test "list filename:number" for C include file
 131 #
 132
 133 proc test_list_include_file {} {
 134     global gdb_prompt
 135
 136     setup_xfail_format "COFF"
 137     gdb_test "list list0.h:1" "1\[ \t\]+/\[*\]+ An include file .*10\[ \t\]+bar \\(x\\+\\+\\);" "list line 1 in include file"
 138
 139     setup_xfail_format "COFF"
 140     gdb_test "list list0.h:100" "Line number 95 out of range; .*list0.h has 3\[67\] lines." "list message for lines past EOF"
 141 }
 142
 143 #
 144 # Test "list filename:number" for C source file
 145 #
 146
 147 proc_with_prefix test_list_filename_and_number {} {
 148     gdb_test "list list0.c:1" "1\[ \t\]+#include \"list0.h\".*10\[ \t\]+foo .x\[+)\]+;"
 149     gdb_test "list list0.c:10" "5\[ \t\]+int x;.*14\[ \t\]+foo .x\[+)\]+;"
 150     gdb_test "list list1.c:1" "1\[ \t\]+\#include.*4\[ \t\]+.*int oof\[ \t\]*\(.*\);\r\n.*"
 151     gdb_test "list list1.c:12" "12\[ \t\]+long_line \[(\]+.*\[)\]+;.*13\[ \t\]+\}\r\n.*"
 152 }
 153
 154 #
 155 # Test "list function" for C source file
 156 #
 157
 158 proc_with_prefix test_list_function {} {
 159     # gcc appears to generate incorrect debugging information for code
 160     # in include files, which breaks this test.
 161     # SunPRO cc is the second case below, it's also correct.
 162     gdb_test "list -q main" "(5\[ \t\]+int x;.*8\[ \t\]+foo \[(\]+.*\[)\]+;|1\[ \t\]+#include .*7\[ \t\]+x = 0;)" "list function in source file 1"
 163
 164     # Ultrix gdb takes the second case below; it's also correct.
 165     # SunPRO cc is the third case.
 166     gdb_test "list -q 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"
 167
 168     # Test "list function" for C include file
 169     # Ultrix gdb is the second case, still correct.
 170     # SunPRO cc is the third case.
 171     gdb_test "list -q 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"
 172 }
 173
 174 proc_with_prefix test_list_forward {} {
 175     global last_line_re
 176
 177     gdb_test "list list0.c:10" "5\[ \t\]+int x;.*14\[ \t\]+foo \[(\]+.*\[)\]+;"
 178     gdb_test "list" "15\[ \t\]+foo \[(\]+.*\[)\]+;.*24\[ \t\]+foo \[(\]+.*\[)\]+;" \
 179         "list 15-24"
 180     gdb_test "list" "25\[ \t\]+foo \[(\]+.*\[)\]+;.*34\[ \t\]+foo \[(\]+.*\[)\]+;" \
 181         "list 25-34"
 182     gdb_test "list" "35\[ \t\]+foo \\(.*\\);.*${last_line_re}" \
 183         "list 35-42"
 184     gdb_test "list" "Line number 44 out of range; \[^\r\n\]+ has 43 lines\." \
 185         "end of file error after \"list\" command"
 186 }
 187
 188 # Test that repeating the list linenum command doesn't print the same
 189 # lines over again.  Note that this test makes sure that the argument
 190 # linenum is dropped, when we repeat the previous command. 'x/5i $pc'
 191 # works the same way.
 192
 193 proc_with_prefix test_repeat_list_command {} {
 194     global last_line_re
 195
 196     gdb_test "list list0.c:10" "5\[ \t\]+int x;.*14\[ \t\]+foo \[(\]+.*\[)\]+;"
 197     gdb_test " " "15\[ \t\]+foo \[(\]+.*\[)\]+;.*24\[ \t\]+foo \[(\]+.*\[)\]+;" \
 198         "list 15-24"
 199     gdb_test " " "25\[ \t\]+foo \[(\]+.*\[)\]+;.*34\[ \t\]+foo \[(\]+.*\[)\]+;" \
 200         "list 25-34"
 201     gdb_test " " "35\[ \t\]+foo \\(.*\\);.*${last_line_re}" \
 202         "list 35-42"
 203     gdb_test "list" "Line number 44 out of range; \[^\r\n\]+ has 43 lines\." \
 204         "end of file error after using 'return' to repeat the list command"
 205 }
 206
 207 proc_with_prefix test_list_backwards {} {
 208     gdb_test "list list0.c:33" "28\[ \t\]+foo \\(.*\\);.*37\[ \t\]+\}"
 209     gdb_test "list -" "18\[ \t\]+foo \[(\]+.*\[)\]+;.*27\[ \t\]+foo \[(\]+.*\[)\]+;" \
 210         "list 18-27"
 211     gdb_test "list -" "8\[ \t\]+foo \[(\]+.*\[)\]+;.*17\[ \t\]+foo \[(\]+.*\[)\]+;" \
 212         "list 8-17"
 213     gdb_test "list -" "1\[ \t\]+#include .*7\[ \t\]+x = 0;" \
 214         "list 1-7"
 215     gdb_test "list -" "Already at the start of .*\." \
 216         "beginning of file error after \"list -\" command"
 217 }
 218
 219 #
 220 # Test "list first,last"
 221 #
 222
 223 proc test_list_range {} {
 224     global gdb_prompt
 225     global last_line_re
 226     global last_line
 227
 228     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"
 229
 230     gdb_test "list 2,5" "2\[ \t\]+\r\n3\[ \t\]+int main \[)(\]+.*5\[ \t\]+int x;" "list range; line1,line2"
 231
 232 #    gdb_test     "list -1,6"   "Line number 0 out of range; .*list0.c has 39 lines." "list range; lower bound negative"
 233
 234 #    gdb_test     "list -100,-40"       "Line number -60 out of range; .*list0.c has 39 lines." "list range; both bounds negative"
 235
 236     set past_end [expr ${last_line} + 10]
 237     set much_past_end [expr ${past_end} + 10]
 238
 239     gdb_test "list 30,${past_end}" "30\[ \t\]+foo \(.*\);.*${last_line_re}" "list range; upper bound past EOF"
 240
 241     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"
 242
 243     gdb_test "list list0.c:2,list1.c:17" "Specified first and last lines are in different files." "list range, must be same files"
 244 }
 245
 246 #
 247 # Test "list filename:function"
 248 #
 249
 250 proc test_list_filename_and_function {} {
 251     global gdb_prompt
 252     global last_line_re
 253
 254     set testcnt 0
 255
 256     # gcc appears to generate incorrect debugging information for code
 257     # in include files, which breaks this test.
 258     # SunPRO cc is the second case below, it's also correct.
 259     send_gdb "list list0.c:main\n"
 260     gdb_expect {
 261         -re "1\[ \t\]+#include .*10\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
 262             incr testcnt
 263         }
 264         -re "5\[ \t\]+int x;.*14\[ \t\]+foo \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
 265             pass "list function in source file 1"
 266         }
 267         -re ".*$gdb_prompt $" { fail "list list0.c:main" }
 268         timeout { fail "list list0.c:main (timeout)" }
 269     }
 270
 271     # Not sure what the point of having this function be unused is.
 272     # AIX is legitimately removing it.
 273     setup_xfail "rs6000-*-aix*"
 274     send_gdb "list list0.c:unused\n"
 275     gdb_expect {
 276         -re "40\[ \t\]+unused.*${last_line_re}\r\n$gdb_prompt $" {
 277             incr testcnt
 278         }
 279         -re "37.*42\[ \t\]+\}\r\n$gdb_prompt $" {
 280             incr testcnt
 281         }
 282         -re ".*$gdb_prompt $" { fail "list list0.c:unused" }
 283         timeout { fail "list list0.c:unused (timeout)" }
 284     }
 285     clear_xfail "rs6000-*-aix*"
 286
 287     # gcc appears to generate incorrect debugging information for code
 288     # in include files, which breaks this test.
 289     # Ultrix gdb is the second case, one line different but still correct.
 290     # SunPRO cc is the third case.
 291     setup_xfail "rs6000-*-*" 1804
 292     setup_xfail_format "COFF"
 293     send_gdb "list list0.h:foo\n"
 294     gdb_expect {
 295         -re "2\[ \t\]+including file.  This.*11\[ \t\]+bar \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
 296             incr testcnt
 297         }
 298         -re "1\[ \t\]+/. An include file.*10\[ \t\]+bar \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
 299             incr testcnt
 300         }
 301         -re "3\[ \t\]+.*12\[ \t\]+bar \[(\]+.*\[)\]+;\r\n$gdb_prompt $" {
 302             incr testcnt
 303         }
 304         -re "No source file named list0.h.\r\n$gdb_prompt $" {
 305             fail "list list0.h:foo"
 306         }
 307         -re ".*$gdb_prompt $" { fail "list list0.h:foo" }
 308         timeout { fail "list list0.h:foo (timeout)" }
 309     }
 310
 311     # Ultrix gdb is the second case.
 312     send_gdb "list list1.c:bar\n"
 313     gdb_expect {
 314         -re "4\[ \t\]+void.*13\[ \t\]+\}\r\n$gdb_prompt $" {
 315             incr testcnt
 316         }
 317         -re "4\[ \t\]+void.*12\[ \t\]*long_line ..;\r\n$gdb_prompt $" {
 318             incr testcnt
 319         }
 320         -re "4\[ \t\]+void.*11\[ \t\]*\r\n$gdb_prompt $" {
 321             incr testcnt
 322         }
 323         -re ".*$gdb_prompt $" { fail "list list1.c:bar" }
 324         timeout { fail "list list1.c:bar (timeout)" }
 325     }
 326
 327     # Not sure what the point of having this function be unused is.
 328     # AIX is legitimately removing it.
 329     setup_xfail "rs6000-*-aix*"
 330     send_gdb "list list1.c:unused\n"
 331     gdb_expect {
 332         -re "12\[ \t\]+long_line \[(\]\[)\];.*13\[ \t\]+\}\r\n.*$gdb_prompt $" {
 333             incr testcnt
 334         }
 335         -re "14.*19\[ \t\]+\}\r\n.*$gdb_prompt $" {
 336             incr testcnt
 337         }
 338         -re ".*$gdb_prompt $" { fail "list list1.c:unused" }
 339         timeout { fail "list list1.c:unused (timeout)" }
 340     }
 341     clear_xfail "rs6000-*-aix*"
 342
 343     pass "list filename:function ($testcnt tests)"
 344
 345     # Test with quoting.
 346     gdb_test "list 'list0.c:main'" "int main.*"
 347
 348     # Test some invalid specs
 349     # The following test takes the FIXME result on most systems using
 350     # DWARF.  It fails to notice that main() is not in the file requested.
 351
 352     setup_xfail "*-*-*"
 353
 354 # Does this actually work ANYWHERE?  I believe not, as this is an `aspect' of
 355 # lookup_symbol(), where, when it is given a specific symtab which does not
 356 # contain the requested symbol, it will subsequently search all of the symtabs
 357 # for the requested symbol.
 358
 359     gdb_test "list list0.c:foo" "Function \"foo\" not defined in .*list0.c" "list filename:function; wrong filename rejected"
 360
 361     gdb_test "list foobar.c:main" "No source file named foobar.c.|Location not found" "list filename:function; nonexistant file"
 362
 363     gdb_test "list list0.h:foobar" "Function \"foobar\" not defined in \"list0.h\"." "list filename:function; nonexistant function"
 364
 365 }
 366
 367 # Test the forward-search (aka search) and the reverse-search commands.
 368
 369 proc test_forward_reverse_search {} {
 370         global timeout
 371
 372         gdb_test_no_output "set listsize 4"
 373         # On SunOS4, this gives us lines 19-22.  On AIX, it gives us
 374         # lines 20-23.  This depends on whether the line number of a function
 375         # is considered to be the openbrace or the first statement--either one
 376         # is acceptable.
 377         gdb_test "list long_line" "24\[ \t\]+long_line .*"
 378
 379         gdb_test "search 4321" " not found"
 380
 381         gdb_test "search 6789" "28\[ \t\]+oof .6789.;"
 382
 383         # Try again, we shouldn't re-find the same source line.  Also,
 384         # while at it, test using the "forward-search" alias.
 385         gdb_test "forward-search 6789" " not found"
 386
 387         # Now test backwards.  First make sure we start searching from
 388         # the previous line, not the current line.
 389         gdb_test "reverse-search 6789" " not found"
 390
 391         # Now find something in a previous line.
 392         gdb_test "reverse-search 67" "26\[ \t\]+oof .67.;"
 393
 394         # Test that GDB won't crash if the line being searched is extremely long.
 395
 396         set oldtimeout $timeout
 397         set timeout [expr "$timeout + 300"]
 398         verbose "Timeout is now $timeout seconds" 2
 399         gdb_test "search 1234" ".*1234.*" "search extremely long line (> 5000 chars)"
 400         set timeout $oldtimeout
 401         verbose "Timeout is now $timeout seconds" 2
 402 }
 403
 404 proc test_only_end {} {
 405     gdb_test_no_output "set listsize 2"
 406     gdb_test "list 1" "list 1\r\n1\[ \t\]\[^\r\n\]*\r\n2\[ \t\]\[^\r\n\]*"
 407     gdb_test "list ,5" "list ,5\r\n4\[ \t\]\[^\r\n\]*\r\n5\[ \t\]\[^\r\n\]*"
 408 }
 409
 410 proc test_list_invalid_args {} {
 411     global binfile
 412
 413     clean_restart ${binfile}
 414     gdb_test "list -INVALID" \
 415         "invalid explicit location argument, \"-INVALID\"" \
 416         "first use of \"list -INVALID\""
 417     gdb_test "list -INVALID" \
 418         "invalid explicit location argument, \"-INVALID\"" \
 419         "second use of \"list -INVALID\""
 420
 421     clean_restart ${binfile}
 422     gdb_test "list +INVALID" "Function \"\\+INVALID\" not defined." \
 423         "first use of \"list +INVALID\""
 424     gdb_test "list +INVALID" "Function \"\\+INVALID\" not defined." \
 425         "second use of \"list +INVALID\""
 426 }
 427
 428 # Start with a fresh gdb.
 429
 430 gdb_exit
 431 gdb_start
 432 gdb_reinitialize_dir $srcdir/$subdir
 433 gdb_file_cmd ${binfile}
 434
 435 gdb_test_no_output "set width 0"
 436
 437 test_listsize
 438 get_debug_format
 439 if [ set_listsize 10 ] then {
 440     test_list_include_file
 441     test_list_filename_and_number
 442     test_list_function
 443     test_list_forward
 444     test_list_backwards
 445     test_repeat_list_command
 446     test_list_range
 447     test_list_filename_and_function
 448     test_forward_reverse_search
 449     test_only_end
 450     test_list_invalid_args
 451 }
 452
 453 # Follows tests that require execution.
 454
 455 # Build source listing pattern based on a line range spec string.  The
 456 # range can be specificed as "START-END" indicating all lines in range
 457 # (inclusive); or just "LINE", indicating just that line.
 458
 459 proc build_pattern { range_spec } {
 460     global line_re
 461
 462     set range_list [split $range_spec -]
 463     set range_list_len [llength $range_list]
 464
 465     set range_start [lindex $range_list 0]
 466     if { $range_list_len > 2 || $range_list_len < 1} {
 467         error "invalid range spec string: $range_spec"
 468     } elseif { $range_list_len == 2 } {
 469         set range_end [lindex $range_list 1]
 470     } else {
 471         set range_end $range_start
 472     }
 473
 474     for {set i $range_start} {$i <= $range_end} {incr i} {
 475         append pattern "\r\n$i\[ \t\]\[^\r\n\]*"
 476     }
 477
 478     verbose -log "pattern $pattern"
 479     return $pattern
 480 }
 481
 482 # Test "list" command invocations right after stopping for an event.
 483 # COMMAND is the actual list command, including arguments.  LISTSIZE1
 484 # and LISTSIZE2 are the listsizes set just before and after running
 485 # the program to the stop point.  COMMAND is issued twice.  The first
 486 # time, the lines specificed by LINERANGE1 are expected; the second
 487 # time, the lines specified by LINERANGE2 are expected.
 488
 489 proc test_list {command listsize1 listsize2 linerange1 linerange2} {
 490     with_test_prefix "$command after stop: $listsize1, $listsize2" {
 491         global binfile
 492
 493         clean_restart $binfile
 494         if ![runto_main] then {
 495             fail "can't run to main"
 496             return
 497         }
 498
 499         # Test changing the listsize both before nexting, and after
 500         # stopping, but before listing.  Only the second listsize
 501         # change should affect which lines are listed.
 502         with_test_prefix "before next" {
 503             gdb_test_no_output "set listsize $listsize1"
 504         }
 505         gdb_test "next" "foo \\(.*"
 506         with_test_prefix "after next" {
 507             gdb_test_no_output "set listsize $listsize2"
 508         }
 509
 510         set pattern1 [build_pattern $linerange1]
 511         set pattern2 [build_pattern $linerange2]
 512         gdb_test "$command" "${pattern1}" "$command #1"
 513         gdb_test "$command" "${pattern2}" "$command #2"
 514     }
 515 }
 516
 517
 518 # The first "list" should center the listing around line 8, the stop
 519 # line.
 520 test_list "list" 1 10 "3-12" "13-22"
 521
 522 # Likewise.
 523 test_list "list" 10 10 "3-12" "13-22"
 524
 525 # Likewise, but show only one line.  IOW, the first list should show
 526 # line 8.  Note how the listsize is 10 at the time of the stop, but
 527 # before any listing had been requested.  That should not affect the
 528 # line range that is first listed.
 529 test_list "list" 10 1 "8" "9"
 530
 531 # Likewise, but show two lines.
 532 test_list "list" 10 2 "7-8" "9-10"
 533
 534 # Three lines.
 535 test_list "list" 10 3 "7-9" "10-12"
 536
 537 # Now test backwards.  Just like "list", the first "list -" should
 538 # center the listing around the stop line.
 539 test_list "list -" 10 10 "3-12" "2"
 540
 541 # Likewise, but test showing 3 lines at a time.
 542 test_list "list -" 10 3 "7-9" "4-6"
 543
 544 # 2 lines at a time.
 545 test_list "list -" 10 2 "7-8" "5-6"
 546
 547 # Test listing one line only.  This case is a little special and
 548 # starts showing the previous line immediately instead of repeating
 549 # the current line.
 550 test_list "list -" 10 1 "7" "6"
 551
 552 remote_exec build "rm -f list0.h"