gdb/testsuite/gdb.base/charset.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2001, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # Please email any bugs, comments, and/or additions to this file to:
  19 # bug-gdb@gnu.org
  20
  21 # Test GDB's character set support.
  22
  23 if $tracelevel then {
  24         strace $tracelevel
  25 }
  26
  27 set prms_id 0
  28 set bug_id 0
  29
  30 set testfile "charset"
  31 set srcfile ${testfile}.c
  32 set binfile ${objdir}/${subdir}/${testfile}
  33 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  34     untested "couldn't compile ${srcdir}/${subdir}/${srcfile}"
  35     return -1
  36 }
  37
  38 # Start with a fresh gdb.
  39 gdb_exit
  40 gdb_start
  41 gdb_reinitialize_dir $srcdir/$subdir
  42 gdb_load ${binfile}
  43
  44 # Parse the output from a `show charset' command.  Return the host
  45 # and target charset as a two-element list.
  46 proc parse_show_charset_output {testname} {
  47     global gdb_prompt
  48
  49     gdb_expect {
  50         -re "The host character set is \"(.*)\"\\.\[\r\n\]+The target character set is \"(.*)\"\\.\[\r\n\]+The target wide character set is \"(.*)\"\\.\[\r\n\]+$gdb_prompt $" {
  51             set host_charset $expect_out(1,string)
  52             set target_charset $expect_out(2,string)
  53             set retlist [list $host_charset $target_charset]
  54             pass $testname
  55         }
  56         -re "The host character set is \"(.*)\"\\.\[\r\n\]+$gdb_prompt $" {
  57             set host_charset $expect_out(1,string)
  58             set retlist [list $host_charset]
  59             pass $testname
  60         }
  61         -re "The target character set is \"(.*)\"\\.\[\r\n\]+$gdb_prompt $" {
  62             set target_charset $expect_out(1,string)
  63             set retlist [list $target_charset]
  64             pass $testname
  65         }
  66         -re ".*$gdb_prompt $" {
  67             fail $testname
  68         }
  69         timeout {
  70             fail "$testname (timeout)"
  71         }
  72     }
  73
  74     return $retlist
  75 }
  76
  77
  78 # Try the various `show charset' commands.
  79
  80 send_gdb "show charset\n"
  81 set show_charset [parse_show_charset_output "show charset"]
  82
  83 send_gdb "show target-charset\n"
  84 set show_target_charset \
  85   [lindex [parse_show_charset_output "show target-charset"] 0]
  86
  87 if {[lsearch -exact $show_charset $show_target_charset] >= 0} {
  88     pass "check `show target-charset' against `show charset'"
  89 } else {
  90     fail "check `show target-charset' against `show charset'"
  91 }
  92
  93 send_gdb "show host-charset\n"
  94 set show_host_charset \
  95   [lindex [parse_show_charset_output "show host-charset"] 0]
  96
  97 if {[lsearch -exact $show_charset $show_host_charset] >= 0} {
  98     pass "check `show host-charset' against `show charset'"
  99 } else {
 100     fail "check `show host-charset' against `show charset'"
 101 }
 102
 103 # Try a malformed `set charset'.
 104 gdb_test "set charset" \
 105          "Requires an argument. Valid arguments are.*" \
 106          "try malformed `set charset'"
 107
 108 # Try using `set host-charset' on an invalid character set.
 109 gdb_test "set host-charset my_grandma_bonnie" \
 110          "Undefined item: \"my_grandma_bonnie\"." \
 111          "try `set host-charset' with invalid charset"
 112
 113 # Try using `set target-charset' on an invalid character set.
 114 gdb_test "set target-charset my_grandma_bonnie" \
 115          "Undefined item: \"my_grandma_bonnie\"." \
 116          "try `set target-charset' with invalid charset"
 117
 118 # A Tcl array mapping the names of all the character sets we've seen
 119 # to "1" if the character set can be used as a host character set, or
 120 # "0" otherwise.  We can use `array names charsets' just to get a list
 121 # of all character sets.
 122 array set charsets {}
 123
 124 proc all_charset_names {} {
 125     global charsets
 126     return [array names charsets]
 127 }
 128
 129 proc valid_host_charset {charset} {
 130     global charsets
 131     return [expr {[info exists charsets($charset)] && $charsets($charset)}]
 132 }
 133
 134 proc valid_target_charset {charset} {
 135     global charsets
 136     return [info exists charsets($charset)]
 137 }
 138
 139 send_gdb "set host-charset\n"
 140 gdb_expect {
 141     -re "Requires an argument. Valid arguments are (\[^ \t\n\r,.\]*)" {
 142         #set host_charset_list $expect_out(1,string)
 143         set charsets($expect_out(1,string)) 1
 144         exp_continue
 145         #pass "capture valid host charsets"
 146     }
 147
 148     -re ", (\[^ \t\n\r,.\]*)" {
 149         #set host_charset_list $expect_out(1,string)
 150         set charsets($expect_out(1,string)) 1
 151         exp_continue
 152         #pass "capture valid host charsets"
 153     }
 154
 155     -re "\\.\r\n$gdb_prompt $" {
 156         #set host_charset_list $expect_out(1,string)
 157         pass "capture valid host charsets"
 158     }
 159
 160     -re ".*$gdb_prompt $" {
 161         fail "capture valid host charsets"
 162     }
 163     timeout {
 164         fail "(timeout) capture valid host charsets"
 165     }
 166 }
 167
 168 # If gdb was built with a phony iconv, it will only have two character
 169 # sets: "auto" and the default.  In this situation, this set of tests
 170 # is pointless.
 171 if {[llength [array names charsets]] < 3} {
 172     untested charset.exp
 173     return -1
 174 }
 175
 176 send_gdb "set target-charset\n"
 177 gdb_expect {
 178     -re "Requires an argument. Valid arguments are (\[^ \t\n\r,.\]*)" {
 179         set target_charset $expect_out(1,string)
 180         if {! [info exists charsets($target_charset)]} {
 181             set charsets($target_charset) 0
 182         }
 183         exp_continue
 184     }
 185
 186     -re ", (\[^ \t\n\r,.\]*)" {
 187         set target_charset $expect_out(1,string)
 188         if {! [info exists charsets($target_charset)]} {
 189             set charsets($target_charset) 0
 190         }
 191         exp_continue
 192     }
 193
 194     -re "\\.\r\n$gdb_prompt $" {
 195         pass "capture valid target charsets"
 196
 197     }
 198
 199     -re ".*$gdb_prompt $" {
 200         fail "capture valid target charsets"
 201     }
 202
 203     timeout {
 204         fail "(timeout) capture valid target charsets"
 205     }
 206 }
 207
 208 # We don't want to test all the charset names here, since that would
 209 # be too many combinations.  We we pick a subset.
 210 set charset_subset {ASCII ISO-8859-1 EBCDIC-US IBM1047}
 211 foreach host_charset $charset_subset {
 212     if {[valid_host_charset $host_charset]} {
 213
 214         set testname "try `set host-charset $host_charset'"
 215         send_gdb "set host-charset $host_charset\n"
 216         gdb_expect {
 217             -re "GDB doesn't know of any character set named.*\[\r\n]+${gdb_prompt} $" {
 218                 # How did it get into `charsets' then?
 219                 fail "$testname (didn't recognize name)"
 220             }
 221             -re "GDB can't use `.*' as its host character set\\.\[\r\n]+${gdb_prompt} $" {
 222                 # Well, then why does its `charsets' entry say it can?
 223                 fail $testname
 224             }
 225             -re "${gdb_prompt} $" {
 226                 pass $testname
 227             }
 228             timeout {
 229                 fail "$testname (timeout)"
 230             }
 231         }
 232
 233         # Check that the command actually had its intended effect:
 234         # $host_charset should now be the host character set.
 235         send_gdb "show charset\n"
 236         set result [parse_show_charset_output "parse `show charset' after `set host-charset $host_charset'"]
 237         if {! [string compare [lindex $result 0] $host_charset]} {
 238             pass "check effect of `set host-charset $host_charset'"
 239         } else {
 240             fail "check effect of `set host-charset $host_charset'"
 241         }
 242
 243         # Now try setting every possible target character set,
 244         # given that host charset.
 245         foreach target_charset $charset_subset {
 246             if {![valid_target_charset $target_charset]} {
 247                 continue
 248             }
 249             set testname "try `set target-charset $target_charset'"
 250             send_gdb "set target-charset $target_charset\n"
 251             gdb_expect {
 252                 -re "GDB doesn't know of any character set named.*\[\r\n]+${gdb_prompt} $" {
 253                     fail "$testname (didn't recognize name)"
 254                 }
 255                 -re "GDB can't convert from the .* character set to .*\\.\[\r\n\]+${gdb_prompt} $" {
 256                     # This is a serious problem.  GDB should be able to convert
 257                     # between any arbitrary pair of character sets.
 258                     fail "$testname (can't convert)"
 259                 }
 260                 -re "${gdb_prompt} $" {
 261                     pass $testname
 262                 }
 263                 timeout {
 264                     fail "$testname (timeout)"
 265                 }
 266             }
 267
 268             # Check that the command actually had its intended effect:
 269             # $target_charset should now be the target charset.
 270             send_gdb "show charset\n"
 271             set result [parse_show_charset_output "parse `show charset' after `set target-charset $target_charset'"]
 272             if {! [string compare $result [list $host_charset $target_charset]]} {
 273                 pass "check effect of `set target-charset $target_charset'"
 274             } else {
 275                 fail "check effect of `set target-charset $target_charset'"
 276             }
 277
 278             # Test handling of characters in the host charset which
 279             # can't be translated into the target charset.  \xA2 is
 280             # `cent' in ISO-8859-1, which has no equivalent in ASCII.
 281             #
 282             # On some systems, the pseudo-tty through which we
 283             # communicate with GDB insists on stripping the high bit
 284             # from input characters, meaning that `cent' turns into
 285             # `"'.  Since ISO-8859-1 and ASCII are identical in the
 286             # lower 128 characters, it's tough to see how we can test
 287             # this behavior on such systems, so we just xfail it.
 288             #
 289             # Note: the \x16 (Control-V) is an escape to allow \xA2 to
 290             # get past readline.
 291             if {! [string compare $host_charset iso-8859-1] && ! [string compare $target_charset ascii]} {
 292
 293                 set testname "untranslatable character in character literal"
 294                 send_gdb "print '\x16\xA2'\n"
 295                 gdb_expect {
 296                     -re "There is no character corresponding to .* in the target character set .*\\.\[\r\n\]+$gdb_prompt $" {
 297                         pass $testname
 298                     }
 299                     -re " = 34 '\"'\[\r\n\]+$gdb_prompt $" {
 300                         xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"
 301                     }
 302                     -re "$gdb_prompt $" {
 303                         fail $testname
 304                     }
 305                     timeout {
 306                         fail "$testname (timeout)"
 307                     }
 308                 }
 309
 310                 set testname "untranslatable character in string literal"
 311                 # If the PTTY zeros bit seven, then this turns into
 312                 #   print """
 313                 # which gets us a syntax error.  We don't care.
 314                 send_gdb "print \"\x16\xA2\"\n"
 315                 gdb_expect {
 316                     -re "There is no character corresponding to .* in the target character set .*\\.\[\r\n\]+$gdb_prompt $" {
 317                         pass $testname
 318                     }
 319                     -re "Unterminated string in expression.\[\r\n\]+$gdb_prompt $" {
 320                         xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"
 321                     }
 322                     -re "$gdb_prompt $" {
 323                         fail $testname
 324                     }
 325                     timeout {
 326                         fail "$testname (timeout)"
 327                     }
 328                 }
 329
 330                 set testname "untranslatable characters in backslash escape"
 331                 send_gdb "print '\\\x16\xA2'\n"
 332                 gdb_expect {
 333                     -re "The escape sequence .* is equivalent to plain .*, which has no equivalent\[\r\n\]+in the .* character set\\.\[\r\n\]+$gdb_prompt $" {
 334                         pass $testname
 335                     }
 336                     -re " = 34 '\"'\[\r\n\]+$gdb_prompt $" {
 337                         xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"
 338                     }
 339                     -re "$gdb_prompt $" {
 340                         fail $testname
 341                     }
 342                     timeout {
 343                         fail "$testname (timeout)"
 344                     }
 345                 }
 346             }
 347         }
 348     }
 349 }
 350
 351
 352 # Set the host character set to plain ASCII, and try actually printing
 353 # some strings in various target character sets.  We need to run the
 354 # test program to the point at which the strings have been
 355 # initialized.
 356 gdb_test "break ${srcfile}:[gdb_get_line_number "all strings initialized"]" \
 357          ".*Breakpoint.* at .*" \
 358          "set breakpoint after all strings have been initialized"
 359 gdb_run_cmd
 360 gdb_expect {
 361     -re "Breakpoint.*all strings initialized.*$gdb_prompt $" {
 362         pass "run until all strings have been initialized"
 363     }
 364     -re "$gdb_prompt $" {
 365         fail "run until all strings have been initialized"
 366     }
 367     timeout {
 368         fail "run until all strings have been initialized (timeout)"
 369     }
 370 }
 371
 372
 373 # We only try the wide character tests on machines where the wchar_t
 374 # typedef in the test case has the right size.
 375 set wchar_size [get_sizeof wchar_t 99]
 376 set wchar_ok 0
 377 if {$wchar_size == 2} {
 378     lappend charset_subset UTF-16
 379     set wchar_ok 1
 380 } elseif {$wchar_size == 4} {
 381     lappend charset_subset UTF-32
 382     set wchar_ok 1
 383 }
 384
 385 gdb_test "set host-charset ASCII" ""
 386 foreach target_charset $charset_subset {
 387     if {![valid_target_charset $target_charset]} {
 388         continue
 389     }
 390
 391     if {$target_charset == "UTF-32" || $target_charset == "UTF-16"} {
 392         set param target-wide-charset
 393         set L L
 394     } else {
 395         set param target-charset
 396         set L ""
 397     }
 398     send_gdb "set $param $target_charset\n"
 399     gdb_expect {
 400         -re "$gdb_prompt $" {
 401             pass "set $param $target_charset"
 402         }
 403         timeout {
 404             fail "set $param $target_charset (timeout)"
 405         }
 406     }
 407
 408     # Try printing the null character.  There seems to be a bug in
 409     # gdb_test that requires us to use gdb_expect here.
 410     send_gdb "print $L'\\0'\n"
 411     gdb_expect {
 412         -re "\\\$${decimal} = 0 $L'\\\\000'\[\r\n\]+$gdb_prompt $" {
 413             pass "print the null character in ${target_charset}"
 414         }
 415         -re "$gdb_prompt $" {
 416             fail "print the null character in ${target_charset}"
 417         }
 418         timeout {
 419             fail "print the null character in ${target_charset} (timeout)"
 420         }
 421     }
 422
 423     # Compute the name of the variable in the test program that holds
 424     # a string in $target_charset.  The variable's name is the
 425     # character set's name, in lower-case, with all non-identifier
 426     # characters replaced with '_', with "_string" stuck on the end.
 427     if {$target_charset == "UTF-16"} {
 428         # We still use the utf_32_string variable -- but the size is
 429         # correct for UTF-16.
 430         set var_name utf_32_string
 431     } else {
 432         set var_name [string tolower "${target_charset}_string"]
 433         regsub -all -- "\[^a-z0-9_\]" $var_name "_" var_name
 434     }
 435
 436     # Compute a regexp matching the results we expect.  This is static,
 437     # but it's easier than writing it out.
 438     regsub -all "." "abfnrtv" "(\\\\&|x)" escapes
 439     set uppercase "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 440     set lowercase "abcdefghijklmnopqrstuvwxyz"
 441     set digits "0123456789"
 442     set octal_escape "\\\\\[0-9\]+"
 443
 444     send_gdb "print $var_name\n"
 445     # ${escapes}${uppercase}${lowercase}${digits}${octal}${octal}
 446     gdb_expect {
 447         -re ".* = $L\"(\\\\a|x)(\\\\b|x)(\\\\f|x)(\\\\n|x)(\\\\r|x)(\\\\t|x)(\\\\v|x)${uppercase}${lowercase}${digits}(${octal_escape}|x)+\"\[\r\n\]+$gdb_prompt $" {
 448             pass "print string in $target_charset"
 449         }
 450         -re "$gdb_prompt $" {
 451             fail "print string in $target_charset"
 452         }
 453         timeout {
 454             fail "print string in $target_charset (timeout)"
 455         }
 456     }
 457
 458     # Try entering a character literal, and see if it comes back unchanged.
 459     gdb_test "print $L'A'" \
 460              " = \[0-9-\]+ $L'A'" \
 461              "parse character literal in ${target_charset}"
 462
 463     # Check that the character literal was encoded correctly.
 464     gdb_test "print $L'A' == $var_name\[7\]" \
 465              " = 1" \
 466              "check value of parsed character literal in ${target_charset}"
 467
 468     # Try entering a string literal, and see if it comes back unchanged.
 469     gdb_test "print $L\"abcdefABCDEF012345\"" \
 470              " = $L\"abcdefABCDEF012345\"" \
 471              "parse string literal in ${target_charset}"
 472
 473     # Check that the string literal was encoded correctly.
 474     gdb_test "print $L\"q\"\[0\] == $var_name\[49\]" \
 475              " = 1" \
 476              "check value of parsed string literal in ${target_charset}"
 477
 478     # Test handling of characters in the target charset which
 479     # can't be translated into the host charset.
 480     if {! [string compare $target_charset iso-8859-1]} {
 481         gdb_test "print iso_8859_1_string\[69\]" \
 482                  " = \[0-9-\]+ '\\\\242'" \
 483                  "print character with no equivalent in host character set"
 484         gdb_test "print iso_8859_1_string + 70" \
 485                  " = ${hex} \"\\\\242.*\"" \
 486                  "print string with no equivalent in host character set"
 487     }
 488
 489     # Make sure that we don't apply the ISO-8859-1 `print_literally'
 490     # function to ASCII.
 491     if {! [string compare $target_charset ascii]} {
 492         gdb_test "print iso_8859_1_string\[69\]" \
 493                  " = \[0-9-\]+ '\\\\242'" \
 494                  "print ASCII unprintable character"
 495         gdb_test "print iso_8859_1_string + 70" \
 496                  " = ${hex} \"\\\\242.*\"" \
 497                  "print ASCII unprintable string"
 498     }
 499
 500     # Try printing characters with backslash escape equivalents.
 501     set escapees {a b f n r t v}
 502     for {set i 0} {$i < [llength $escapees]} {incr i} {
 503         set escape [lindex $escapees $i]
 504         send_gdb "print $var_name\[$i\]\n"
 505         set have_escape 1
 506         gdb_expect {
 507             -re "= \[0-9-\]+ $L'\\\\${escape}'\[\r\n\]+$gdb_prompt $" {
 508                 pass "try printing '\\${escape}' in ${target_charset}"
 509             }
 510             -re "= \[0-9-\]+ 'x'\[\r\n\]+$gdb_prompt $" {
 511                 xfail "try printing '\\${escape}' in ${target_charset} (no such escape)"
 512                 set have_escape 0
 513             }
 514             -re "$gdb_prompt $" {
 515                 fail "try printing '\\${escape}' in ${target_charset}"
 516             }
 517             timeout {
 518                 fail "try printing '\\${escape}' in ${target_charset} (timeout)"
 519             }
 520         }
 521
 522         if {$have_escape} {
 523
 524             # Try parsing a backslash escape in a character literal.
 525             gdb_test "print $L'\\${escape}' == $var_name\[$i\]" \
 526                      " = 1" \
 527                      "check value of '\\${escape}' in ${target_charset}"
 528
 529             # Try parsing a backslash escape in a string literal.
 530             gdb_test "print $L\"\\${escape}\"\[0\] == $var_name\[$i\]" \
 531                      " = 1" \
 532                      "check value of \"\\${escape}\" in ${target_charset}"
 533         }
 534     }
 535
 536     # Try printing a character escape that doesn't exist.  We should
 537     # get the unescaped character, in the target character set.
 538     gdb_test "print $L'\\q'" " = \[0-9-\]+ $L'q'" \
 539              "print escape that doesn't exist in $target_charset"
 540     gdb_test "print $L'\\q' == $var_name\[49\]" " = 1" \
 541              "check value of escape that doesn't exist in $target_charset"
 542 }
 543
 544 # Reset the target charset.
 545 gdb_test "set target-charset UTF-8" ""
 546
 547 # \242 is not a valid UTF-8 character.
 548 gdb_test "print \"\\242\"" " = \"\\\\242\"" \
 549   "non-representable target character"
 550
 551 gdb_test "print '\\x'" "\\\\x escape without a following hex digit."
 552 gdb_test "print '\\u'" "\\\\u escape without a following hex digit."
 553 gdb_test "print '\\9'" " = \[0-9\]+ '9'"
 554
 555 # An octal escape can only be 3 digits.
 556 gdb_test "print \"\\1011\"" " = \"A1\""
 557
 558 # Tests for wide- or unicode- strings.  L is the prefix letter to use,
 559 # either "L" (for wide strings), "u" (for UTF-16), or "U" (for UTF-32).
 560 # NAME is used in the test names and should be related to the prefix
 561 # letter in some easy-to-undestand way.
 562 proc test_wide_or_unicode {L name} {
 563     gdb_test "print $L\"ab\" $L\"c\"" " = $L\"abc\"" \
 564       "basic $name string concatenation"
 565     gdb_test "print $L\"ab\" \"c\"" " = $L\"abc\"" \
 566       "narrow and $name string concatenation"
 567     gdb_test "print \"ab\" $L\"c\"" " = $L\"abc\"" \
 568       "$name and narrow string concatenation"
 569     gdb_test "print $L\"\\xe\" $L\"c\"" " = $L\"\\\\016c\"" \
 570       "$name string concatenation with escape"
 571     gdb_test "print $L\"\" \"abcdef\" \"g\"" \
 572       "$L\"abcdefg\"" \
 573       "concatenate three strings with empty $name string"
 574
 575     gdb_test "print $L'a'" "= \[0-9\]+ $L'a'" \
 576       "basic $name character"
 577 }
 578
 579 if {$wchar_ok} {
 580     test_wide_or_unicode L wide
 581 }
 582
 583 set ucs2_ok [expr {[get_sizeof char16_t 99] == 2}]
 584 if {$ucs2_ok} {
 585     test_wide_or_unicode u UTF-16
 586 }
 587
 588 set ucs4_ok [expr {[get_sizeof char32_t 99] == 4}]
 589 if {$ucs4_ok} {
 590     test_wide_or_unicode U UTF-32
 591 }
 592
 593 # Test an invalid string combination.
 594 proc test_combination {L1 name1 L2 name2} {
 595     gdb_test "print $L1\"abc\" $L2\"def\"" \
 596       "Undefined string concatenation." \
 597       "undefined concatenation of $name1 and $name2"
 598 }
 599
 600 if {$wchar_ok && $ucs2_ok} {
 601     test_combination L wide u UTF-16
 602 }
 603 if {$wchar_ok && $ucs4_ok} {
 604     test_combination L wide U UTF-32
 605   # Regression test for a typedef to a typedef.
 606   gdb_test "print myvar" "= \[0-9\]+ L'A'" \
 607       "typedef to wchar_t"
 608 }
 609 if {$ucs2_ok && $ucs4_ok} {
 610     test_combination u UTF-16 U UTF-32
 611 }
 612
 613 # Regression test for a cleanup bug in the charset code.
 614 gdb_test "print 'a' == 'a' || 'b' == 'b'" \
 615   ".* = 1" \
 616   "EVAL_SKIP cleanup handling regression test"
 617
 618 gdb_exit