2018-01-01 05:43:02 +01:00
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# Copyright 2011-2018 Free Software Foundation, Inc.
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2011-08-18 18:19:01 +02:00
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#
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# Contributed by Red Hat, originally written by Keith Seitz.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the gdb testsuite.
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proc add {var name params expected {kind {func}}} {
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upvar $var result
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if {[string compare $kind "template"] == 0} {
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set method_name "${name}<$expected>"
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} else {
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set method_name "$name"
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}
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set expect ".*// ${method_name}\\($expected\\)"
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lappend result [list "${method_name}($params)" $expect]
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}
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if {[skip_cplus_tests]} { continue }
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# Tests for c++/12266 et al
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* gdb.cp/abstract-origin.exp: Use standard_testfile.
* gdb.cp/ambiguous.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/annota2.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/annota3.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/anon-ns.exp: Use standard_testfile.
* gdb.cp/anon-struct.exp: Use standard_testfile.
* gdb.cp/anon-union.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/arg-reference.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/bool.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/breakpoint.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/bs15503.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/call-c.exp: Use standard_testfile, clean_restart,
standard_output_file.
* gdb.cp/casts.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/class2.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/classes.exp: Use standard_testfile, prepare_for_testing.
(test_static_members): Update.
* gdb.cp/cmpd-minsyms.exp: Use standard_testfile.
* gdb.cp/converts.exp: Use standard_testfile.
* gdb.cp/cp-relocate.exp: Use standard_testfile.
* gdb.cp/cpcompletion.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/cpexprs.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/cplabel.exp: Use standard_testfile.
* gdb.cp/cplusfuncs.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/ctti.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/derivation.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/destrprint.exp: Use standard_testfile.
* gdb.cp/dispcxx.exp: Use standard_testfile.
* gdb.cp/exception.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/expand-psymtabs-cxx.exp: Use standard_testfile.
* gdb.cp/extern-c.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/formatted-ref.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/fpointer.exp: Use standard_testfile.
* gdb.cp/gdb1355.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/gdb2384.exp: Use standard_testfile, clean_restart,
standard_output_file.
* gdb.cp/gdb2495.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/hang.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/infcall-dlopen.exp: Use standard_testfile,
standard_output_file.
* gdb.cp/inherit.exp: Use standard_testfile, prepare_for_testing.
(do_tests): Update.
* gdb.cp/koenig.exp: Use standard_testfile.
* gdb.cp/local.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/m-data.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/m-static.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/mb-ctor.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/mb-inline.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/mb-templates.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/member-ptr.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/meth-typedefs.exp: Use standard_testfile.
* gdb.cp/method.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/method2.exp: Use standard_testfile.
* gdb.cp/minsym-fallback.exp: Use standard_testfile,
standard_output_file.
* gdb.cp/misc.exp: Use standard_testfile, prepare_for_testing.
(do_tests): Update.
* gdb.cp/namespace-enum.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/namespace-nested-import.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/namespace.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/nextoverthrow.exp: Use standard_testfile.
* gdb.cp/no-dmgl-verbose.exp: Use standard_testfile.
* gdb.cp/nsdecl.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/nsimport.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/nsnested.exp: Use standard_testfile.
* gdb.cp/nsnoimports.exp: Use standard_testfile.
* gdb.cp/nsrecurs.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/nsstress.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/nsusing.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/operator.exp: Use standard_testfile.
* gdb.cp/oranking.exp: Use standard_testfile.
* gdb.cp/overload-const.exp: Use standard_testfile.
* gdb.cp/overload.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/ovldbreak.exp: Use standard_testfile.
* gdb.cp/ovsrch.exp: Use standard_testfile.
* gdb.cp/paren-type.exp: Use standard_testfile.
* gdb.cp/pass-by-ref.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/pr-1023.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/pr-1210.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/pr-574.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/pr10687.exp: Use standard_testfile, clean_restart.
* gdb.cp/pr10728.exp: Use standard_testfile,
standard_output_file.
* gdb.cp/pr12028.exp: Use standard_testfile.
* gdb.cp/pr9067.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/pr9167.exp: Use standard_testfile.
* gdb.cp/pr9631.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/printmethod.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/psmang.exp: Use standard_testfile, clean_restart.
* gdb.cp/psymtab-parameter.exp: Use standard_testfile.
* gdb.cp/ptype-cv-cp.exp: Use standard_testfile.
* gdb.cp/re-set-overloaded.exp: Use standard_testfile,
standard_output_file.
* gdb.cp/readnow-language.exp: Use standard_testfile.
* gdb.cp/ref-params.exp: Use standard_testfile, build_executable.
(gdb_start_again): Use clean_restart.
* gdb.cp/ref-types.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/rtti.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/shadow.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/smartp.exp: Use standard_testfile.
* gdb.cp/static-method.exp: Use standard_testfile.
* gdb.cp/static-print-quit.exp: Use standard_testfile.
* gdb.cp/temargs.exp: Use standard_testfile.
* gdb.cp/templates.exp: Use standard_testfile,
prepare_for_testing.
(do_tests): Update.
* gdb.cp/try_catch.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/typedef-operator.exp: Use standard_testfile.
* gdb.cp/userdef.exp: Use standard_testfile, prepare_for_testing.
* gdb.cp/virtbase.exp: Use standard_testfile,
prepare_for_testing.
* gdb.cp/virtfunc.exp: Use standard_testfile,
prepare_for_testing.
(do_tests): Update.
* gdb.cp/virtfunc2.exp: Use standard_testfile,
prepare_for_testing.
2012-07-10 17:18:18 +02:00
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standard_testfile .cc
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2011-08-18 18:19:01 +02:00
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2016-12-23 17:52:18 +01:00
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile {c++ debug}]} {
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2011-08-18 18:19:01 +02:00
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return -1
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}
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if {![runto_main]} {
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perror "couldn't run to breakpoint"
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continue
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}
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array set typedefs {
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"my_other_type" {"my_other_type" "my_type" "const char* const*"}
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"my_other_type_2" {"my_other_type_2" "my_type_2" "int"}
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"CORE_ADDR" { "CORE_ADDR" "unsigned long" }
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"_BAR_" { "_BAR_" "a::b::BAR" "a::b::c::d::bar" }
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"aenum" { "aenum" "anon_enum" }
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"astruct" { "astruct" "anon_struct" }
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"aunion" { "aunion" "anon_union" }
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}
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set methods {}
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# Add the simple, one-parameter methods
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foreach meth {A::FOO::test A::FOO::foo} {
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foreach type {my_other_type my_other_type_2} {
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foreach t $typedefs($type) {
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add methods $meth $t $type
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}
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}
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}
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# Add two-parameter methods
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foreach meth {A::FOO::test A::FOO::foo} {
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set type "my_other_type_2, const my_other_type"
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foreach t1 $typedefs(my_other_type_2) {
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foreach t2 $typedefs(my_other_type) {
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add methods $meth "$t1, const $t2" $type
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add methods $meth "$t1, $t2" $type
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}
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}
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}
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# Add three-parameter methods/functions
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foreach meth {A::FOO::test A::FOO::foo B::test test} {
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set type "aenum, astruct const&, aunion const\\*\\*\\*"
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foreach t1 $typedefs(aenum) {
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foreach t2 $typedefs(astruct) {
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foreach t3 $typedefs(aunion) {
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add methods $meth "$t1, $t2 const&, $t3 const***" $type
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}
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}
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}
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}
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# Add the array-of-function pointer methods
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set type "fptr1\\*"
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foreach meth {A::FOO::test A::FOO::foo} {
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add methods $meth "fptr1*" $type
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foreach t $typedefs(my_other_type) {
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add methods $meth "void (**) ($t)" $type
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}
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}
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# Add the function pointer methods
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set type "fptr3"
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foreach meth {A::FOO::test A::FOO::foo} {
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add methods $meth "fptr3" $type
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foreach t1 $typedefs(my_other_type) {
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add methods $meth "void (*)(fptr2, $t1)" $type
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foreach t2 $typedefs(my_other_type_2) {
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add methods $meth "void (*)(void (*)(fptr1, $t2), $t1)" $type
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foreach t3 $typedefs(my_other_type) {
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add methods $meth \
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"void (*)(void (*)(void (*) ($t3), $t2), $t1)" $type
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}
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}
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}
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}
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set type1 "my_other_type"
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set type2 "my_other_type, my_other_type_2"
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foreach meth {"test" "B::test"} {
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foreach t1 $typedefs(my_other_type) {
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add methods $meth $t1 $type1
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foreach t2 $typedefs(my_other_type_2) {
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add methods $meth "$t1, $t2" $type2 template
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}
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}
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}
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# Miscellaneous tests
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set type {CORE_ADDR \(\*\) \[10\]}
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foreach meth {A::FOO::foo A::FOO::test} {
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foreach t $typedefs(CORE_ADDR) {
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add methods $meth "$t (*) \[10\]" $type
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}
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}
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foreach t $typedefs(_BAR_) {
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add methods "test" "$t&" {_BAR_&}
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}
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gdb_test_no_output "set listsize 1" ""
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# Finally, for each method in the list METHODS, check whether
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# the user can "list" it and "break" on it (both quoted and unquoted).
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foreach test $methods {
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set func [lindex $test 0]
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set result [lindex $test 1]
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Make "break foo" find "A::foo", A::B::foo", etc. [C++ and wild matching]
This patch teaches GDB about setting breakpoints in all scopes
(namespaces and classes) by default.
Here's a contrived example:
(gdb) b func<tab>
(anonymous namespace)::A::function() Bn::(anonymous namespace)::B::function() function(int, int)
(anonymous namespace)::B::function() Bn::(anonymous namespace)::function() gdb::(anonymous namespace)::A::function()
(anonymous namespace)::B::function() const Bn::(anonymous namespace)::function(int, int) gdb::(anonymous namespace)::function()
(anonymous namespace)::function() Bn::B::func() gdb::(anonymous namespace)::function(int, int)
(anonymous namespace)::function(int, int) Bn::B::function() gdb::A::func()
A::func() Bn::func() gdb::A::function()
A::function() Bn::function() gdb::func()
B::func() Bn::function(int, int) gdb::function()
B::function() Bn::function(long) gdb::function(int, int)
B::function() const func() gdb::function(long)
B::function_const() const function()
(gdb) b function
Breakpoint 1 at 0x4005ce: function. (26 locations)
(gdb) b B::function<tab>
(anonymous namespace)::B::function() B::function() const Bn::B::function()
(anonymous namespace)::B::function() const B::function_const() const
B::function() Bn::(anonymous namespace)::B::function()
(gdb) b B::function
Breakpoint 1 at 0x40072c: B::function. (6 locations)
To get back the original behavior of interpreting the function name as
a fully-qualified name, you can use the new "-qualified" (or "-q")
option/flag (added by this commit). For example:
(gdb) b B::function
(anonymous namespace)::B::function() B::function() const Bn::B::function()
(anonymous namespace)::B::function() const B::function_const() const
B::function() Bn::(anonymous namespace)::B::function()
vs:
(gdb) b -qualified B::function
B::function() B::function() const B::function_const() const
I've chosen "-qualified" / "-q" because "-f" (for "full" or
"fully-qualified") is already taken for "-function".
Note: the "-qualified" option works with both linespecs and explicit
locations. I.e., these are equivalent:
(gdb) b -q func
(gdb) b -q -f func
and so are these:
(gdb) b -q filename.cc:func
(gdb) b -q -s filename.cc -f func
(gdb) b -s filename.cc -q -f func
(gdb) b -s filename.cc -f func -q
To better understand why I consider wild matching the better default,
consider what happens when we get to the point when _all_ of GDB is
wrapped under "namespace gdb {}". I have a patch series that does
that, and when I started debugging that GDB, I immediately became
frustrated. You'd have to write "b gdb::internal_error", "b
gdb::foo", "b gdb::bar", etc. etc., which gets annoying pretty
quickly. OTOH, consider how this makes it very easy to set
breakpoints in classes wrapped in anonymous namespaces. You just
don't think of them, GDB finds the symbols for you automatically.
(At the Cauldron a couple months ago, several people told me that they
run into a similar issue when debugging other C++ projects. One
example was when debugging LLVM, which puts all its code under the
"llvm" namespace.)
Implementation-wise, what the patch does is:
- makes C++ symbol name hashing only consider the last component of
a symbol name. (so that we can look up symbol names by
last-component name only).
- adds a C++ symbol name matcher for symbol_name_match_type::WILD,
which ignores missing leading specifiers / components.
- adjusts a few preexisting testsuite tests to use "-qualified" when
they mean it.
- adds new testsuite tests.
- adds unit tests.
Grows the gdb.linespec/ tests like this:
-# of expected passes 7823
+# of expected passes 8977
gdb/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* NEWS: Mention that breakpoints on C++ functions are now set on
on all namespaces/classes by default, and mention "break
-qualified".
* ax-gdb.c (agent_command_1): Adjust to pass a
symbol_name_match_type to new_linespec_location.
* breakpoint.c (parse_breakpoint_sals): Adjust to
get_linespec_location's return type change.
(strace_marker_create_sals_from_location): Adjust to pass a
symbol_name_match_type to new_linespec_location.
(strace_marker_decode_location): Adjust to get_linespec_location's
return type change.
(strace_command): Adjust to pass a symbol_name_match_type to
new_linespec_location.
(LOCATION_HELP_STRING): Add paragraph about wildmatching, and
mention "-qualified".
* c-lang.c (cplus_language_defn): Install cp_search_name_hash.
* completer.c (explicit_location_match_type::MATCH_QUALIFIED): New
enumerator.
(complete_address_and_linespec_locations): New parameter
'match_type'. Pass it down.
(explicit_options): Add "-qualified".
(collect_explicit_location_matches): Pass the requested match type
to the linespec completers. Handle MATCH_QUALIFIED.
(location_completer): Handle "-qualified" combined with linespecs.
* cp-support.c (cp_search_name_hash): New.
(cp_symbol_name_matches_1): Implement wild matching for C++.
(cp_fq_symbol_name_matches): Reimplement.
(cp_get_symbol_name_matcher): Return different matchers depending
on the lookup name's match type.
(selftests::test_cp_symbol_name_matches): Add wild matching tests.
* cp-support.h (cp_search_name_hash): New declaration.
* dwarf2read.c
(selftests::dw2_expand_symtabs_matching::test_symbols): Add
symbols.
(test_dw2_expand_symtabs_matching_symbol): Add wild matching
tests.
* guile/scm-breakpoint.c (gdbscm_register_breakpoint_x): Adjust to
pass a symbol_name_match_type to new_linespec_location.
* linespec.c (linespec_parse_basic): Lookup function symbols using
the parser's symbol name match type.
(convert_explicit_location_to_linespec): New
symbol_name_match_type parameter. Pass it down to
find_linespec_symbols.
(convert_explicit_location_to_sals): Pass the location's name
match type to convert_explicit_location_to_linespec.
(parse_linespec): New match_type parameter. Save it in the
parser.
(linespec_parser_new): Default to symbol_name_match_type::WILD.
(linespec_complete_function): New symbol_name_match_type
parameter. Use it.
(complete_linespec_component): Pass down the parser's recorded
name match type.
(linespec_complete_label): New symbol_name_match_type parameter.
Use it.
(linespec_complete): New symbol_name_match_type parameter. Save
it in the parser and pass it down. Adjust to
get_linespec_location's prototype change.
(find_function_symbols, find_linespec_symbols): New
symbol_name_match_type parameter. Pass it down instead of
assuming symbol_name_match_type::WILD.
* linespec.h (linespec_complete, linespec_complete_function)
(linespec_complete_label): New symbol_name_match_type parameter.
* location.c (event_location::linespec_location): Now a struct
linespec_location.
(EL_LINESPEC): Adjust.
(initialize_explicit_location): Default to
symbol_name_match_type::WILD.
(new_linespec_location): New symbol_name_match_type parameter.
Record it in the location.
(get_linespec_location): Now returns a struct linespec_location.
(new_explicit_location): Also copy func_name_match_type.
(explicit_to_string_internal)
(string_to_explicit_location): Handle "-qualified".
(copy_event_location): Adjust to LINESPEC_LOCATION type change.
Copy symbol_name_match_type fields.
(event_location_deleter::operator()): Adjust to LINESPEC_LOCATION
type change.
(event_location_to_string): Adjust to LINESPEC_LOCATION type
change. Handle "-qualfied".
(string_to_explicit_location): Handle "-qualified".
(string_to_event_location_basic): New symbol_name_match_type
parameter. Pass it down.
(string_to_event_location): Handle "-qualified".
* location.h (struct linespec_location): New.
(explicit_location::func_name_match_type): New field.
(new_linespec_location): Now returns a const linespec_location *.
(string_to_event_location_basic): New symbol_name_match_type
parameter.
(explicit_completion_info::saw_explicit_location_option): New
field.
* mi/mi-cmd-break.c (mi_cmd_break_insert_1): Adjust to pass a
symbol_name_match_type to new_linespec_location.
* python/py-breakpoint.c (bppy_init): Likewise.
* python/python.c (gdbpy_decode_line): Likewise.
gdb/testsuite/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* gdb.base/langs.exp: Use -qualified.
* gdb.cp/meth-typedefs.exp: Use -qualified, and add tests without
it.
* gdb.cp/namespace.exp: Use -qualified.
* gdb.linespec/cpcompletion.exp (overload-2, fqn, fqn-2)
(overload-3, template-overload, template-ret-type, const-overload)
(const-overload-quoted, anon-ns, ambiguous-prefix): New
procedures.
(test_driver): Call them.
* gdb.cp/save-bp-qualified.cc: New.
* gdb.cp/save-bp-qualified.exp: New.
* gdb.linespec/explicit.exp: Test -qualified.
* lib/completion-support.exp (completion::explicit_opts_list): Add
"-qualified".
* lib/gdb.exp (gdb_breakpoint): Handle "qualified".
gdb/doc/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Linespec Locations): Document how "function" is
interpreted in C++ and Ada. Document "-qualified".
(Explicit Locations): Document how "-function" is interpreted in
C++ and Ada. Document "-qualified".
2017-11-29 20:33:23 +01:00
|
|
|
gdb_test "list -qualified $func" $result
|
|
|
|
gdb_test "list -qualified '$func'" $result
|
|
|
|
if {[gdb_breakpoint "-qualified $func"]} {
|
|
|
|
pass "break -qualified $func"
|
2011-08-18 18:19:01 +02:00
|
|
|
}
|
Make "break foo" find "A::foo", A::B::foo", etc. [C++ and wild matching]
This patch teaches GDB about setting breakpoints in all scopes
(namespaces and classes) by default.
Here's a contrived example:
(gdb) b func<tab>
(anonymous namespace)::A::function() Bn::(anonymous namespace)::B::function() function(int, int)
(anonymous namespace)::B::function() Bn::(anonymous namespace)::function() gdb::(anonymous namespace)::A::function()
(anonymous namespace)::B::function() const Bn::(anonymous namespace)::function(int, int) gdb::(anonymous namespace)::function()
(anonymous namespace)::function() Bn::B::func() gdb::(anonymous namespace)::function(int, int)
(anonymous namespace)::function(int, int) Bn::B::function() gdb::A::func()
A::func() Bn::func() gdb::A::function()
A::function() Bn::function() gdb::func()
B::func() Bn::function(int, int) gdb::function()
B::function() Bn::function(long) gdb::function(int, int)
B::function() const func() gdb::function(long)
B::function_const() const function()
(gdb) b function
Breakpoint 1 at 0x4005ce: function. (26 locations)
(gdb) b B::function<tab>
(anonymous namespace)::B::function() B::function() const Bn::B::function()
(anonymous namespace)::B::function() const B::function_const() const
B::function() Bn::(anonymous namespace)::B::function()
(gdb) b B::function
Breakpoint 1 at 0x40072c: B::function. (6 locations)
To get back the original behavior of interpreting the function name as
a fully-qualified name, you can use the new "-qualified" (or "-q")
option/flag (added by this commit). For example:
(gdb) b B::function
(anonymous namespace)::B::function() B::function() const Bn::B::function()
(anonymous namespace)::B::function() const B::function_const() const
B::function() Bn::(anonymous namespace)::B::function()
vs:
(gdb) b -qualified B::function
B::function() B::function() const B::function_const() const
I've chosen "-qualified" / "-q" because "-f" (for "full" or
"fully-qualified") is already taken for "-function".
Note: the "-qualified" option works with both linespecs and explicit
locations. I.e., these are equivalent:
(gdb) b -q func
(gdb) b -q -f func
and so are these:
(gdb) b -q filename.cc:func
(gdb) b -q -s filename.cc -f func
(gdb) b -s filename.cc -q -f func
(gdb) b -s filename.cc -f func -q
To better understand why I consider wild matching the better default,
consider what happens when we get to the point when _all_ of GDB is
wrapped under "namespace gdb {}". I have a patch series that does
that, and when I started debugging that GDB, I immediately became
frustrated. You'd have to write "b gdb::internal_error", "b
gdb::foo", "b gdb::bar", etc. etc., which gets annoying pretty
quickly. OTOH, consider how this makes it very easy to set
breakpoints in classes wrapped in anonymous namespaces. You just
don't think of them, GDB finds the symbols for you automatically.
(At the Cauldron a couple months ago, several people told me that they
run into a similar issue when debugging other C++ projects. One
example was when debugging LLVM, which puts all its code under the
"llvm" namespace.)
Implementation-wise, what the patch does is:
- makes C++ symbol name hashing only consider the last component of
a symbol name. (so that we can look up symbol names by
last-component name only).
- adds a C++ symbol name matcher for symbol_name_match_type::WILD,
which ignores missing leading specifiers / components.
- adjusts a few preexisting testsuite tests to use "-qualified" when
they mean it.
- adds new testsuite tests.
- adds unit tests.
Grows the gdb.linespec/ tests like this:
-# of expected passes 7823
+# of expected passes 8977
gdb/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* NEWS: Mention that breakpoints on C++ functions are now set on
on all namespaces/classes by default, and mention "break
-qualified".
* ax-gdb.c (agent_command_1): Adjust to pass a
symbol_name_match_type to new_linespec_location.
* breakpoint.c (parse_breakpoint_sals): Adjust to
get_linespec_location's return type change.
(strace_marker_create_sals_from_location): Adjust to pass a
symbol_name_match_type to new_linespec_location.
(strace_marker_decode_location): Adjust to get_linespec_location's
return type change.
(strace_command): Adjust to pass a symbol_name_match_type to
new_linespec_location.
(LOCATION_HELP_STRING): Add paragraph about wildmatching, and
mention "-qualified".
* c-lang.c (cplus_language_defn): Install cp_search_name_hash.
* completer.c (explicit_location_match_type::MATCH_QUALIFIED): New
enumerator.
(complete_address_and_linespec_locations): New parameter
'match_type'. Pass it down.
(explicit_options): Add "-qualified".
(collect_explicit_location_matches): Pass the requested match type
to the linespec completers. Handle MATCH_QUALIFIED.
(location_completer): Handle "-qualified" combined with linespecs.
* cp-support.c (cp_search_name_hash): New.
(cp_symbol_name_matches_1): Implement wild matching for C++.
(cp_fq_symbol_name_matches): Reimplement.
(cp_get_symbol_name_matcher): Return different matchers depending
on the lookup name's match type.
(selftests::test_cp_symbol_name_matches): Add wild matching tests.
* cp-support.h (cp_search_name_hash): New declaration.
* dwarf2read.c
(selftests::dw2_expand_symtabs_matching::test_symbols): Add
symbols.
(test_dw2_expand_symtabs_matching_symbol): Add wild matching
tests.
* guile/scm-breakpoint.c (gdbscm_register_breakpoint_x): Adjust to
pass a symbol_name_match_type to new_linespec_location.
* linespec.c (linespec_parse_basic): Lookup function symbols using
the parser's symbol name match type.
(convert_explicit_location_to_linespec): New
symbol_name_match_type parameter. Pass it down to
find_linespec_symbols.
(convert_explicit_location_to_sals): Pass the location's name
match type to convert_explicit_location_to_linespec.
(parse_linespec): New match_type parameter. Save it in the
parser.
(linespec_parser_new): Default to symbol_name_match_type::WILD.
(linespec_complete_function): New symbol_name_match_type
parameter. Use it.
(complete_linespec_component): Pass down the parser's recorded
name match type.
(linespec_complete_label): New symbol_name_match_type parameter.
Use it.
(linespec_complete): New symbol_name_match_type parameter. Save
it in the parser and pass it down. Adjust to
get_linespec_location's prototype change.
(find_function_symbols, find_linespec_symbols): New
symbol_name_match_type parameter. Pass it down instead of
assuming symbol_name_match_type::WILD.
* linespec.h (linespec_complete, linespec_complete_function)
(linespec_complete_label): New symbol_name_match_type parameter.
* location.c (event_location::linespec_location): Now a struct
linespec_location.
(EL_LINESPEC): Adjust.
(initialize_explicit_location): Default to
symbol_name_match_type::WILD.
(new_linespec_location): New symbol_name_match_type parameter.
Record it in the location.
(get_linespec_location): Now returns a struct linespec_location.
(new_explicit_location): Also copy func_name_match_type.
(explicit_to_string_internal)
(string_to_explicit_location): Handle "-qualified".
(copy_event_location): Adjust to LINESPEC_LOCATION type change.
Copy symbol_name_match_type fields.
(event_location_deleter::operator()): Adjust to LINESPEC_LOCATION
type change.
(event_location_to_string): Adjust to LINESPEC_LOCATION type
change. Handle "-qualfied".
(string_to_explicit_location): Handle "-qualified".
(string_to_event_location_basic): New symbol_name_match_type
parameter. Pass it down.
(string_to_event_location): Handle "-qualified".
* location.h (struct linespec_location): New.
(explicit_location::func_name_match_type): New field.
(new_linespec_location): Now returns a const linespec_location *.
(string_to_event_location_basic): New symbol_name_match_type
parameter.
(explicit_completion_info::saw_explicit_location_option): New
field.
* mi/mi-cmd-break.c (mi_cmd_break_insert_1): Adjust to pass a
symbol_name_match_type to new_linespec_location.
* python/py-breakpoint.c (bppy_init): Likewise.
* python/python.c (gdbpy_decode_line): Likewise.
gdb/testsuite/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* gdb.base/langs.exp: Use -qualified.
* gdb.cp/meth-typedefs.exp: Use -qualified, and add tests without
it.
* gdb.cp/namespace.exp: Use -qualified.
* gdb.linespec/cpcompletion.exp (overload-2, fqn, fqn-2)
(overload-3, template-overload, template-ret-type, const-overload)
(const-overload-quoted, anon-ns, ambiguous-prefix): New
procedures.
(test_driver): Call them.
* gdb.cp/save-bp-qualified.cc: New.
* gdb.cp/save-bp-qualified.exp: New.
* gdb.linespec/explicit.exp: Test -qualified.
* lib/completion-support.exp (completion::explicit_opts_list): Add
"-qualified".
* lib/gdb.exp (gdb_breakpoint): Handle "qualified".
gdb/doc/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Linespec Locations): Document how "function" is
interpreted in C++ and Ada. Document "-qualified".
(Explicit Locations): Document how "-function" is interpreted in
C++ and Ada. Document "-qualified".
2017-11-29 20:33:23 +01:00
|
|
|
if {[gdb_breakpoint "-qualified '$func'"]} {
|
|
|
|
pass "break -qualified '$func'"
|
2011-08-18 18:19:01 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
Make "break foo" find "A::foo", A::B::foo", etc. [C++ and wild matching]
This patch teaches GDB about setting breakpoints in all scopes
(namespaces and classes) by default.
Here's a contrived example:
(gdb) b func<tab>
(anonymous namespace)::A::function() Bn::(anonymous namespace)::B::function() function(int, int)
(anonymous namespace)::B::function() Bn::(anonymous namespace)::function() gdb::(anonymous namespace)::A::function()
(anonymous namespace)::B::function() const Bn::(anonymous namespace)::function(int, int) gdb::(anonymous namespace)::function()
(anonymous namespace)::function() Bn::B::func() gdb::(anonymous namespace)::function(int, int)
(anonymous namespace)::function(int, int) Bn::B::function() gdb::A::func()
A::func() Bn::func() gdb::A::function()
A::function() Bn::function() gdb::func()
B::func() Bn::function(int, int) gdb::function()
B::function() Bn::function(long) gdb::function(int, int)
B::function() const func() gdb::function(long)
B::function_const() const function()
(gdb) b function
Breakpoint 1 at 0x4005ce: function. (26 locations)
(gdb) b B::function<tab>
(anonymous namespace)::B::function() B::function() const Bn::B::function()
(anonymous namespace)::B::function() const B::function_const() const
B::function() Bn::(anonymous namespace)::B::function()
(gdb) b B::function
Breakpoint 1 at 0x40072c: B::function. (6 locations)
To get back the original behavior of interpreting the function name as
a fully-qualified name, you can use the new "-qualified" (or "-q")
option/flag (added by this commit). For example:
(gdb) b B::function
(anonymous namespace)::B::function() B::function() const Bn::B::function()
(anonymous namespace)::B::function() const B::function_const() const
B::function() Bn::(anonymous namespace)::B::function()
vs:
(gdb) b -qualified B::function
B::function() B::function() const B::function_const() const
I've chosen "-qualified" / "-q" because "-f" (for "full" or
"fully-qualified") is already taken for "-function".
Note: the "-qualified" option works with both linespecs and explicit
locations. I.e., these are equivalent:
(gdb) b -q func
(gdb) b -q -f func
and so are these:
(gdb) b -q filename.cc:func
(gdb) b -q -s filename.cc -f func
(gdb) b -s filename.cc -q -f func
(gdb) b -s filename.cc -f func -q
To better understand why I consider wild matching the better default,
consider what happens when we get to the point when _all_ of GDB is
wrapped under "namespace gdb {}". I have a patch series that does
that, and when I started debugging that GDB, I immediately became
frustrated. You'd have to write "b gdb::internal_error", "b
gdb::foo", "b gdb::bar", etc. etc., which gets annoying pretty
quickly. OTOH, consider how this makes it very easy to set
breakpoints in classes wrapped in anonymous namespaces. You just
don't think of them, GDB finds the symbols for you automatically.
(At the Cauldron a couple months ago, several people told me that they
run into a similar issue when debugging other C++ projects. One
example was when debugging LLVM, which puts all its code under the
"llvm" namespace.)
Implementation-wise, what the patch does is:
- makes C++ symbol name hashing only consider the last component of
a symbol name. (so that we can look up symbol names by
last-component name only).
- adds a C++ symbol name matcher for symbol_name_match_type::WILD,
which ignores missing leading specifiers / components.
- adjusts a few preexisting testsuite tests to use "-qualified" when
they mean it.
- adds new testsuite tests.
- adds unit tests.
Grows the gdb.linespec/ tests like this:
-# of expected passes 7823
+# of expected passes 8977
gdb/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* NEWS: Mention that breakpoints on C++ functions are now set on
on all namespaces/classes by default, and mention "break
-qualified".
* ax-gdb.c (agent_command_1): Adjust to pass a
symbol_name_match_type to new_linespec_location.
* breakpoint.c (parse_breakpoint_sals): Adjust to
get_linespec_location's return type change.
(strace_marker_create_sals_from_location): Adjust to pass a
symbol_name_match_type to new_linespec_location.
(strace_marker_decode_location): Adjust to get_linespec_location's
return type change.
(strace_command): Adjust to pass a symbol_name_match_type to
new_linespec_location.
(LOCATION_HELP_STRING): Add paragraph about wildmatching, and
mention "-qualified".
* c-lang.c (cplus_language_defn): Install cp_search_name_hash.
* completer.c (explicit_location_match_type::MATCH_QUALIFIED): New
enumerator.
(complete_address_and_linespec_locations): New parameter
'match_type'. Pass it down.
(explicit_options): Add "-qualified".
(collect_explicit_location_matches): Pass the requested match type
to the linespec completers. Handle MATCH_QUALIFIED.
(location_completer): Handle "-qualified" combined with linespecs.
* cp-support.c (cp_search_name_hash): New.
(cp_symbol_name_matches_1): Implement wild matching for C++.
(cp_fq_symbol_name_matches): Reimplement.
(cp_get_symbol_name_matcher): Return different matchers depending
on the lookup name's match type.
(selftests::test_cp_symbol_name_matches): Add wild matching tests.
* cp-support.h (cp_search_name_hash): New declaration.
* dwarf2read.c
(selftests::dw2_expand_symtabs_matching::test_symbols): Add
symbols.
(test_dw2_expand_symtabs_matching_symbol): Add wild matching
tests.
* guile/scm-breakpoint.c (gdbscm_register_breakpoint_x): Adjust to
pass a symbol_name_match_type to new_linespec_location.
* linespec.c (linespec_parse_basic): Lookup function symbols using
the parser's symbol name match type.
(convert_explicit_location_to_linespec): New
symbol_name_match_type parameter. Pass it down to
find_linespec_symbols.
(convert_explicit_location_to_sals): Pass the location's name
match type to convert_explicit_location_to_linespec.
(parse_linespec): New match_type parameter. Save it in the
parser.
(linespec_parser_new): Default to symbol_name_match_type::WILD.
(linespec_complete_function): New symbol_name_match_type
parameter. Use it.
(complete_linespec_component): Pass down the parser's recorded
name match type.
(linespec_complete_label): New symbol_name_match_type parameter.
Use it.
(linespec_complete): New symbol_name_match_type parameter. Save
it in the parser and pass it down. Adjust to
get_linespec_location's prototype change.
(find_function_symbols, find_linespec_symbols): New
symbol_name_match_type parameter. Pass it down instead of
assuming symbol_name_match_type::WILD.
* linespec.h (linespec_complete, linespec_complete_function)
(linespec_complete_label): New symbol_name_match_type parameter.
* location.c (event_location::linespec_location): Now a struct
linespec_location.
(EL_LINESPEC): Adjust.
(initialize_explicit_location): Default to
symbol_name_match_type::WILD.
(new_linespec_location): New symbol_name_match_type parameter.
Record it in the location.
(get_linespec_location): Now returns a struct linespec_location.
(new_explicit_location): Also copy func_name_match_type.
(explicit_to_string_internal)
(string_to_explicit_location): Handle "-qualified".
(copy_event_location): Adjust to LINESPEC_LOCATION type change.
Copy symbol_name_match_type fields.
(event_location_deleter::operator()): Adjust to LINESPEC_LOCATION
type change.
(event_location_to_string): Adjust to LINESPEC_LOCATION type
change. Handle "-qualfied".
(string_to_explicit_location): Handle "-qualified".
(string_to_event_location_basic): New symbol_name_match_type
parameter. Pass it down.
(string_to_event_location): Handle "-qualified".
* location.h (struct linespec_location): New.
(explicit_location::func_name_match_type): New field.
(new_linespec_location): Now returns a const linespec_location *.
(string_to_event_location_basic): New symbol_name_match_type
parameter.
(explicit_completion_info::saw_explicit_location_option): New
field.
* mi/mi-cmd-break.c (mi_cmd_break_insert_1): Adjust to pass a
symbol_name_match_type to new_linespec_location.
* python/py-breakpoint.c (bppy_init): Likewise.
* python/python.c (gdbpy_decode_line): Likewise.
gdb/testsuite/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* gdb.base/langs.exp: Use -qualified.
* gdb.cp/meth-typedefs.exp: Use -qualified, and add tests without
it.
* gdb.cp/namespace.exp: Use -qualified.
* gdb.linespec/cpcompletion.exp (overload-2, fqn, fqn-2)
(overload-3, template-overload, template-ret-type, const-overload)
(const-overload-quoted, anon-ns, ambiguous-prefix): New
procedures.
(test_driver): Call them.
* gdb.cp/save-bp-qualified.cc: New.
* gdb.cp/save-bp-qualified.exp: New.
* gdb.linespec/explicit.exp: Test -qualified.
* lib/completion-support.exp (completion::explicit_opts_list): Add
"-qualified".
* lib/gdb.exp (gdb_breakpoint): Handle "qualified".
gdb/doc/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Linespec Locations): Document how "function" is
interpreted in C++ and Ada. Document "-qualified".
(Explicit Locations): Document how "-function" is interpreted in
C++ and Ada. Document "-qualified".
2017-11-29 20:33:23 +01:00
|
|
|
# The tests above use -qualified to explicitly pick the one "test"
|
|
|
|
# symbol each test cares about. Now check that both "break test(..)"
|
|
|
|
# and "list test(..)" without -qualified find "test(..)" in all the 3
|
|
|
|
# scopes that have the this particular overload.
|
|
|
|
set func "test(aenum, astruct const&, aunion const***)"
|
|
|
|
set func_re "test\\(anon_enum, anon_struct const&, anon_union const\\*\\*\\*\\)"
|
|
|
|
set line1 [gdb_get_line_number " A::FOO::$func"]
|
|
|
|
set line2 [gdb_get_line_number " B::$func"]
|
|
|
|
set line3 [gdb_get_line_number " $func"]
|
|
|
|
|
|
|
|
foreach f [list "$func" "'$func'"] {
|
|
|
|
set any "\[^\r\n\]*"
|
|
|
|
gdb_test \
|
|
|
|
"list $f" \
|
|
|
|
[multi_line \
|
|
|
|
"file: \".*$srcfile\", line number: $line1, symbol: \"A::foo::$func_re\"" \
|
|
|
|
"$line1${any}A::FOO::test${any}" \
|
|
|
|
"file: \".*$srcfile\", line number: $line2, symbol: \"B::$func_re\"" \
|
|
|
|
"$line2${any}B::test${any}" \
|
|
|
|
"file: \".*$srcfile\", line number: $line3, symbol: \"$func_re\"" \
|
|
|
|
"$line3${any}// test${any}"] \
|
|
|
|
"list $f"
|
|
|
|
|
|
|
|
delete_breakpoints
|
|
|
|
gdb_test "break $f" "\\(3 locations\\)"
|
|
|
|
}
|
|
|
|
|
2011-08-18 18:19:01 +02:00
|
|
|
gdb_exit
|
|
|
|
return 0
|