diff options
Diffstat (limited to 'gdb/testsuite')
| -rw-r--r-- | gdb/testsuite/gdb.cp/pretty-print.cc | 80 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.cp/pretty-print.exp | 53 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.cp/pretty-print.py | 82 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.replay/connect.exp | 4 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.replay/fetch-exec-and-args.exp | 2 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.replay/missing-thread.exp | 2 |
6 files changed, 219 insertions, 4 deletions
diff --git a/gdb/testsuite/gdb.cp/pretty-print.cc b/gdb/testsuite/gdb.cp/pretty-print.cc new file mode 100644 index 0000000..9065e15 --- /dev/null +++ b/gdb/testsuite/gdb.cp/pretty-print.cc @@ -0,0 +1,80 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2025 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +namespace std +{ + +inline namespace __cxx11 {} + +template <typename> struct allocator {}; + +template <class> struct char_traits; + +inline namespace __cxx11 { + +template <typename _CharT, typename = char_traits<_CharT>, + typename = allocator<_CharT>> + +class basic_string; + +} // namespace __cx11 + +typedef basic_string<char> string; + +template <typename> struct allocator_traits; + +template <typename _Tp> struct allocator_traits<allocator<_Tp>> { + using pointer = _Tp *; +}; + +} // namespace std + +struct __alloc_traits : std::allocator_traits<std::allocator<char>> {}; + +namespace std +{ + +inline namespace __cxx11 +{ + +template <typename, typename, typename> struct basic_string +{ + typedef long size_type; + + size_type npos; + + struct _Alloc_hider + { + _Alloc_hider(__alloc_traits::pointer, const allocator<char> &); + } _M_dataplus; + + basic_string(char *, allocator<char> __a = allocator<char>()) + : _M_dataplus(0, __a) {} +}; + +} // namespace __cxx11 + +} // namespace std + +static char bar[] = "bar"; + +int +main (void) +{ + std::string foo = bar; + return 0; +} diff --git a/gdb/testsuite/gdb.cp/pretty-print.exp b/gdb/testsuite/gdb.cp/pretty-print.exp new file mode 100644 index 0000000..e1f0475 --- /dev/null +++ b/gdb/testsuite/gdb.cp/pretty-print.exp @@ -0,0 +1,53 @@ +# Copyright 2025 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +# Print std::string::npos using c++ pretty-printer. Todo: convert this to a +# DWARF assembly test-case, such that the regression test also works for clang. + +standard_testfile .cc + +set opts {} +lappend opts debug +lappend opts c++ +if {[have_compile_flag -fno-eliminate-unused-debug-symbols]} { + lappend opts additional_flags=-fno-eliminate-unused-debug-symbols + # Work around clang warning -Wunused-command-line-argument. + lappend opts nowarnings +} + +if {[prepare_for_testing "failed to prepare" $testfile $srcfile $opts]} { + return +} + +gdb_test_no_output "source $srcdir/$subdir/pretty-print.py" \ + "load libstdc++ pretty printers" + +gdb_test_no_output \ + "python register_type_printers(gdb.current_objfile())" \ + "register libstdc++ pretty printers" + +gdb_test "whatis std::string" \ + "std::string" + +# Regression test for PR c++/33480. GDB used to hang, at least if the GDB +# build optimization flags triggered some uninitialized variables in the right +# way. I was not able to reproduce the hang with clang, due to different +# debug info. +# +# Prints different strings due to different debug info: +# - std::string::size_type with gcc, and +# - size_type with clang +gdb_test "whatis std::string::npos" \ + "(std::string::)?size_type" diff --git a/gdb/testsuite/gdb.cp/pretty-print.py b/gdb/testsuite/gdb.cp/pretty-print.py new file mode 100644 index 0000000..6ee8d71 --- /dev/null +++ b/gdb/testsuite/gdb.cp/pretty-print.py @@ -0,0 +1,82 @@ +# Copyright (C) 2008-2025 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +# Reduced copy of /usr/share/gcc-15/python/libstdcxx/v6/printers.py. + +import gdb +import gdb.printing +import gdb.types + + +class FilteringTypePrinter(object): + + def __init__(self, template, name, targ1=None): + self._template = template + self.name = name + self._targ1 = targ1 + self.enabled = True + + class _recognizer(object): + def __init__(self, template, name, targ1): + self._template = template + self.name = name + self._targ1 = targ1 + self._type_obj = None + + def recognize(self, type_obj): + if type_obj.tag is None: + return None + + if self._type_obj is None: + if self._targ1 is not None: + s = "{}<{}".format(self._template, self._targ1) + if not type_obj.tag.startswith(s): + return None + elif not type_obj.tag.startswith(self._template): + return None + + try: + self._type_obj = gdb.lookup_type(self.name).strip_typedefs() + except: + pass + + if self._type_obj is None: + return None + + t1 = gdb.types.get_basic_type(self._type_obj) + t2 = gdb.types.get_basic_type(type_obj) + if t1 == t2: + return self.name + + if self._template.split("::")[-1] == "basic_string": + s1 = self._type_obj.tag.replace("__cxx11::", "") + s2 = type_obj.tag.replace("__cxx11::", "") + if s1 == s2: + return self.name + + return None + + def instantiate(self): + return self._recognizer(self._template, self.name, self._targ1) + + +def add_one_type_printer(obj, template, name, targ1=None): + printer = FilteringTypePrinter("std::" + template, "std::" + name, targ1) + gdb.types.register_type_printer(obj, printer) + + +def register_type_printers(obj): + for ch in (("", "char"),): + add_one_type_printer(obj, "__cxx11::basic_string", ch[0] + "string", ch[1]) diff --git a/gdb/testsuite/gdb.replay/connect.exp b/gdb/testsuite/gdb.replay/connect.exp index f52f209..103f53a 100644 --- a/gdb/testsuite/gdb.replay/connect.exp +++ b/gdb/testsuite/gdb.replay/connect.exp @@ -58,7 +58,7 @@ proc_with_prefix record_initial_logfile {} { # Connect to gdbserver. if {![gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport] == 0} { - unsupported "$testfile (couldn't start gdbserver)" + unsupported "couldn't start gdbserver" return } @@ -84,7 +84,7 @@ proc_with_prefix replay_without_error {} { # Connect to gdbreplay. if {![gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport] == 0} { - unsupported "$testfile (couldn't start gdbreplay)" + unsupported "couldn't start gdbreplay" return } gdb_breakpoint main diff --git a/gdb/testsuite/gdb.replay/fetch-exec-and-args.exp b/gdb/testsuite/gdb.replay/fetch-exec-and-args.exp index c4fcba7..c9d03c9 100644 --- a/gdb/testsuite/gdb.replay/fetch-exec-and-args.exp +++ b/gdb/testsuite/gdb.replay/fetch-exec-and-args.exp @@ -54,7 +54,7 @@ proc_with_prefix record_initial_logfile { remotelog } { # Connect to gdbserver. if {[gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport] != 0} { - unsupported "$testfile (couldn't connect to gdbserver)" + unsupported "couldn't connect to gdbserver" return } diff --git a/gdb/testsuite/gdb.replay/missing-thread.exp b/gdb/testsuite/gdb.replay/missing-thread.exp index 6ee2e4c..0c9efa2 100644 --- a/gdb/testsuite/gdb.replay/missing-thread.exp +++ b/gdb/testsuite/gdb.replay/missing-thread.exp @@ -63,7 +63,7 @@ proc_with_prefix record_initial_logfile { log_filename } { # Connect to gdbserver. if {![gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport] == 0} { - unsupported "$testfile (couldn't start gdbserver)" + unsupported "couldn't start gdbserver" return } |