1 # This test code is part of GDB, the GNU debugger.
3 # Copyright 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
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.
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.
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/>.
18 # Auxiliary function to check for known problems.
20 # EXPECTED_STRING is the string expected by the test.
22 # ACTUAL_STRING is the actual string output by gdb.
24 # ERRATA_TABLE is a list of lines of the form:
26 # { expected-string broken-string {eval-block} }
28 # If there is a line for the given EXPECTED_STRING, and if the
29 # ACTUAL_STRING output by gdb is the same as the BROKEN_STRING in the
30 # table, then I eval the eval-block.
32 proc cp_check_errata { expected_string actual_string errata_table } {
33 foreach erratum $errata_table {
34 if { "$expected_string" == [lindex $erratum 0]
35 && "$actual_string" == [lindex $erratum 1] } then {
36 eval [lindex $erratum 2]
41 # Test ptype of a class.
43 # Different C++ compilers produce different output. To accommodate all
44 # the variations listed below, I read the output of "ptype" and process
45 # each line, matching it to the class description given in the
48 # IN_COMMAND and IN_TESTNAME are the command and testname for
49 # gdb_test_multiple. If IN_TESTNAME is the empty string, then it
50 # defaults to IN_COMMAND.
52 # IN_KEY is "class" or "struct". For now, I ignore it, and allow either
53 # "class" or "struct" in the output, as long as the access specifiers all
56 # IN_TAG is the class tag or structure tag.
58 # IN_CLASS_TABLE is a list of class information. Each entry contains a
59 # keyword and some values. The keywords and their values are:
61 # { base "base-declaration" }
63 # the class has a base with the given declaration.
67 # the class has a virtual base pointer with the given name. this
68 # is for gcc 2.95.3, which emits ptype entries for the virtual base
69 # pointers. the vbase list includes both indirect and direct
70 # virtual base classes (indeed, a virtual base is usually
71 # indirect), so this information cannot be derived from the base
74 # { field "access" "declaration" }
76 # the class has a data field with the given access type and the
79 # { method "access" "declaration" }
81 # the class has a member function with the given access type
82 # and the given declaration.
84 # If you test the same class declaration more than once, you can specify
85 # IN_CLASS_TABLE as "ibid". "ibid" means: look for a previous class
86 # table that had the same IN_KEY and IN_TAG, and re-use that table.
88 # IN_TAIL is the expected text after the close brace, specifically the "*"
89 # in "struct { ... } *". This is an optional parameter. The default
90 # value is "", for no tail.
92 # IN_ERRATA_TABLE is a list of errata entries. See cp_check_errata for the
93 # format of the errata table. Note: the errata entries are not subject to
94 # demangler syntax adjustment, so you have to make a bigger table
95 # with lines for each output variation.
97 # gdb can vary the output of ptype in several ways:
101 # The output can start with either "class" or "struct", depending on
102 # what the symbol table reader in gdb decides. This is usually
103 # unrelated to the original source code.
105 # dwarf-2 debug info distinguishes class/struct, but gdb ignores it
106 # stabs+ debug info does not distinguish class/struct
107 # hp debug info distinguishes class/struct, and gdb honors it
109 # I tried to accommodate this with regular expressions such as
110 # "((class|struct) A \{ public:|struct A \{)", but that turns into a
111 # hairy mess because of optional private virtual base pointers and
112 # optional public synthetic operators. This is the big reason I gave
113 # up on regular expressions and started parsing the output.
115 # . REDUNDANT ACCESS SPECIFIER
117 # In "class { private: ... }" or "struct { public: ... }", gdb might
118 # or might not emit a redundant initial access specifier, depending
119 # on the gcc version.
121 # . VIRTUAL BASE POINTERS
123 # If a class has virtual bases, either direct or indirect, the class
124 # will have virtual base pointers. With gcc 2.95.3, gdb prints lines
125 # for these virtual base pointers. This does not happen with gcc
126 # 3.3.4, gcc 3.4.1, or hp acc A.03.45.
128 # I accept these lines. These lines are optional; but if I see one of
129 # these lines, then I expect to see all of them.
131 # Note: drow considers printing these lines to be a bug in gdb.
133 # . SYNTHETIC METHODS
135 # A C++ compiler may synthesize some methods: an assignment
136 # operator, a copy constructor, a constructor, and a destructor. The
137 # compiler might include debug information for these methods.
139 # dwarf-2 gdb does not show these methods
140 # stabs+ gdb shows these methods
141 # hp gdb does not show these methods
143 # I accept these methods. These lines are optional, and any or
144 # all of them might appear, mixed in anywhere in the regular methods.
146 # With gcc v2, the synthetic copy-ctor and ctor have an additional
147 # "int" parameter at the beginning, the "in-charge" flag.
149 # . DEMANGLER SYNTAX VARIATIONS
151 # Different demanglers produce "int foo(void)" versus "int foo()",
152 # "const A&" versus "const A &", and so on.
156 # gcc 2.95.3 -gdwarf-2
157 # gcc 2.95.3 -gstabs+
158 # gcc 3.3.4 -gdwarf-2
160 # gcc 3.4.1 -gdwarf-2
162 # gcc HEAD 20040731 -gdwarf-2
163 # gcc HEAD 20040731 -gstabs+
169 # "A*" versus "A *" and "A&" versus "A &" in user methods.
173 # -- chastain 2004-08-07
175 proc cp_test_ptype_class { in_command in_testname in_key in_tag in_class_table { in_tail "" } { in_errata_table { } } } {
177 set wsopt "\[\r\n\t \]*"
179 # The test name defaults to the command.
181 if { "$in_testname" == "" } then { set in_testname "$in_command" }
183 # Save class tables in a history array for reuse.
185 global cp_class_table_history
186 if { $in_class_table == "ibid" } then {
187 if { ! [info exists cp_class_table_history("$in_key,$in_tag") ] } then {
188 fail "$in_testname // bad ibid"
191 set in_class_table $cp_class_table_history("$in_key,$in_tag")
193 set cp_class_table_history("$in_key,$in_tag") $in_class_table
196 # Split the class table into separate tables.
203 foreach class_line $in_class_table {
204 switch [lindex $class_line 0] {
205 "base" { lappend list_bases [lindex $class_line 1] }
206 "vbase" { lappend list_vbases [lindex $class_line 1] }
207 "field" { lappend list_fields [lrange $class_line 1 2] }
208 "method" { lappend list_methods [lrange $class_line 1 2] }
209 default { fail "$in_testname // bad line in class table: $class_line"; return; }
213 # Construct a list of synthetic operators.
214 # These are: { count ccess-type regular-expression }.
217 lappend list_synth [list 0 "public" "$in_tag & operator=\\($in_tag const ?&\\);"]
218 lappend list_synth [list 0 "public" "$in_tag\\((int,|) ?$in_tag const ?&\\);"]
219 lappend list_synth [list 0 "public" "$in_tag\\((int|void|)\\);"]
221 # Actually do the ptype.
224 gdb_test_multiple "$in_command" "$in_testname // parse failed" {
225 -re "type = (struct|class)${wsopt}(\[A-Za-z0-9_\]*)${wsopt}((:\[^\{\]*)?)${wsopt}\{(.*)\}${wsopt}(\[^\r\n\]*)\[\r\n\]+$gdb_prompt $" {
227 set actual_key $expect_out(1,string)
228 set actual_tag $expect_out(2,string)
229 set actual_base_string $expect_out(3,string)
230 set actual_body $expect_out(5,string)
231 set actual_tail $expect_out(6,string)
234 if { ! $parse_okay } then { return }
236 # Check the actual key. It would be nice to require that it match
237 # the input key, but gdb does not support that. For now, accept any
238 # $actual_key as long as the access property of each field/method
241 switch "$actual_key" {
242 "class" { set access "private" }
243 "struct" { set access "public" }
245 cp_check_errata "class" "$actual_key" $in_errata_table
246 cp_check_errata "struct" "$actual_key" $in_errata_table
247 fail "$in_testname // wrong key: $actual_key"
252 # Check the actual tag.
254 if { "$actual_tag" != "$in_tag" } then {
255 cp_check_errata "$in_tag" "$actual_tag" $in_errata_table
256 fail "$in_testname // wrong tag: $actual_tag"
260 # Check the actual bases.
261 # First parse them into a list.
263 set list_actual_bases { }
264 if { "$actual_base_string" != "" } then {
265 regsub "^:${wsopt}" $actual_base_string "" actual_base_string
266 set list_actual_bases [split $actual_base_string ","]
269 # Check the base count.
271 if { [llength $list_actual_bases] < [llength $list_bases] } then {
272 fail "$in_testname // too few bases"
275 if { [llength $list_actual_bases] > [llength $list_bases] } then {
276 fail "$in_testname // too many bases"
282 foreach actual_base $list_actual_bases {
283 set actual_base [string trim $actual_base]
284 set base [lindex $list_bases 0]
285 if { "$actual_base" != "$base" } then {
286 cp_check_errata "$base" "$actual_base" $in_errata_table
287 fail "$in_testname // wrong base: $actual_base"
290 set list_bases [lreplace $list_bases 0 0]
293 # Parse each line in the body.
295 set last_was_access 0
298 foreach actual_line [split $actual_body "\r\n"] {
302 set actual_line [string trim $actual_line]
303 if { "$actual_line" == "" } then { continue }
307 if { [regexp "^(public|protected|private)${wsopt}:\$" "$actual_line" s0 s1] } then {
309 if { $last_was_access } then {
310 fail "$in_testname // redundant access specifier"
313 set last_was_access 1
316 set last_was_access 0
319 # Optional virtual base pointer.
321 if { [ llength $list_vbases ] > 0 } then {
322 set vbase [lindex $list_vbases 0]
323 if { [ regexp "$vbase \\*(_vb.|_vb\\\$|__vb_)\[0-9\]*$vbase;" $actual_line ] } then {
324 if { "$access" != "private" } then {
325 cp_check_errata "private" "$access" $in_errata_table
326 fail "$in_testname // wrong access specifier for virtual base: $access"
329 set list_vbases [lreplace $list_vbases 0 0]
337 if { [llength $list_fields] > 0 } then {
338 set field_access [lindex [lindex $list_fields 0] 0]
339 set field_decl [lindex [lindex $list_fields 0] 1]
340 if { "$actual_line" == "$field_decl" } then {
341 if { "$access" != "$field_access" } then {
342 cp_check_errata "$field_access" "$access" $in_errata_table
343 fail "$in_testname // wrong access specifier for field: $access"
346 set list_fields [lreplace $list_fields 0 0]
350 # Data fields must appear before synths and methods.
351 cp_check_errata "$field_decl" "$actual_line" $in_errata_table
352 fail "$in_testname // unrecognized line type 1: $actual_line"
358 if { [llength $list_methods] > 0 } then {
359 set method_access [lindex [lindex $list_methods 0] 0]
360 set method_decl [lindex [lindex $list_methods 0] 1]
361 if { "$actual_line" == "$method_decl" } then {
362 if { "$access" != "$method_access" } then {
363 cp_check_errata "$method_access" "$access" $in_errata_table
364 fail "$in_testname // wrong access specifier for method: $access"
367 set list_methods [lreplace $list_methods 0 0]
371 # gcc 2.95.3 shows "foo()" as "foo(void)".
372 regsub -all "\\(\\)" $method_decl "(void)" method_decl
373 if { "$actual_line" == "$method_decl" } then {
374 if { "$access" != "$method_access" } then {
375 cp_check_errata "$method_access" "$access" $in_errata_table
376 fail "$in_testname // wrong access specifier for method: $access"
379 set list_methods [lreplace $list_methods 0 0]
384 # Synthetic operators. These are optional and can be mixed in
385 # with the methods in any order, but duplicates are wrong.
387 # This test must come after the user methods, so that a user
388 # method which matches a synth-method pattern is treated
389 # properly as a user method.
392 for { set isynth 0 } { $isynth < [llength $list_synth] } { incr isynth } {
393 set synth [lindex $list_synth $isynth]
394 set synth_count [lindex $synth 0]
395 set synth_access [lindex $synth 1]
396 set synth_re [lindex $synth 2]
398 if { [ regexp "$synth_re" "$actual_line" ] } then {
400 if { "$access" != "$synth_access" } then {
401 cp_check_errata "$synth_access" "$access" $in_errata_table
402 fail "$in_testname // wrong access specifier for synthetic operator: $access"
406 if { $synth_count > 0 } then {
407 cp_check_errata "$actual_line" "$actual_line" $in_errata_table
408 fail "$in_testname // duplicate synthetic operator: $actual_line"
411 # Update the count in list_synth.
414 set synth [list $synth_count $synth_access "$synth_re"]
415 set list_synth [lreplace $list_synth $isynth $isynth $synth]
423 if { $synth_match } then { continue }
427 if { [llength $list_methods] > 0 } then {
428 set method_decl [lindex [lindex $list_methods 0] 1]
429 cp_check_errata "$method_decl" "$actual_line" $in_errata_table
432 fail "$in_testname // unrecognized line type 2: $actual_line"
436 # Check for missing elements.
438 if { $vbase_match } then {
439 if { [llength $list_vbases] > 0 } then {
440 fail "$in_testname // missing virtual base pointers"
445 if { [llength $list_fields] > 0 } then {
446 fail "$in_testname // missing fields"
450 if { [llength $list_methods] > 0 } then {
451 fail "$in_testname // missing methods"
457 set actual_tail [string trim $actual_tail]
458 if { "$actual_tail" != "$in_tail" } then {
459 cp_check_errata "$in_tail" "$actual_tail" $in_errata_table
460 fail "$in_testname // wrong tail: $actual_tail"