mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-23 10:03:47 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
113 lines
4.0 KiB
Plaintext
113 lines
4.0 KiB
Plaintext
# Copyright 2022-2024 Free Software Foundation, Inc.
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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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# Test setting a breakpoint at "f(std::string)".
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#
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# GDB should be able to expand the std::string typedef, and then set
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# the breakpoint using the resulting name. In the Itanium ABI's
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# mangling scheme, "std::string", "std::istream", "std::iostream",
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# "std::ostream" are special, though, they have corresponding standard
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# abbreviations. The libiberty demangler only expands these standard
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# abbreviations to their full non-typedef underlying type if the
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# DMGL_VERBOSE option is requested. By default it expands them to the
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# user-friendly "std::string", etc. typedefs. GDB didn't use to use
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# that option, and would instead prevent expansion of the
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# "std::string" (etc.) standard-abbreviation typedefs at
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# breakpoint-set type, such that the function name used for function
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# lookup would match the "std::string" present in the function's
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# non-DMGL_VERBOSE demangled name.
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#
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# For example (DMGL_VERBOSE):
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#
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# $ echo "_Z1fSs" | c++filt
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# f(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)
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#
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# vs (no DMGL_VERBOSE):
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#
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# $ echo "_Z1fSs" | c++filt --no-verbose
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# f(std::string)
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#
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# This design broke setting a breakpoint at "f(std::string)" when the
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# libstdc++ C++11 ABI was introduced, as the "f(std::string)"
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# function's mangled name no longer uses a standard substitution for
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# std::string...
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#
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# I.e., with the libstdc++ C++11 ABI, we now have (and DMGL_VERBOSE
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# makes no difference):
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#
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# $ echo _Z1fNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE | c++filt
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# f(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)
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#
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# So nowadays, GDB always uses DMGL_VERBOSE and no longer prevents
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# std::string (etc.) typedef expansion. This test exercises both
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# pre-C++11 and C++11 ABIs for this reason. On non-libstdc++ systems
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# where _GLIBCXX_USE_CXX11_ABI has no effect, we just end up running
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# the test twice with whatever ABI is used.
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standard_testfile .cc
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require allow_cplus_tests
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# CXX11_ABI specifies the value to define _GLIBCXX_USE_CXX11_ABI as.
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proc test {cxx11_abi} {
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global srcdir subdir srcfile binfile testfile
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set options \
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[list c++ debug additional_flags=-D_GLIBCXX_USE_CXX11_ABI=$cxx11_abi]
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if { [gdb_compile \
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"${srcdir}/${subdir}/${srcfile}" "${binfile}-${cxx11_abi}.o" \
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object $options] != "" } {
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untested "failed to compile"
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return -1
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}
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clean_restart ${testfile}-${cxx11_abi}.o
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# Since we're debugging an .o file, GDB doesn't figure out we're
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# debugging C++ code and the current language when auto, is
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# guessed as C.
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gdb_test_no_output "set language c++"
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# Get the type std::string is a typedef for. We'll try to set a
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# breakpoint using the expanded type too.
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set realtype ""
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set type "std::string"
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gdb_test_multiple "whatis /r $type" "" {
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-re -wrap "type = (\[^\r\n\]+)" {
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set realtype $expect_out(1,string)
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gdb_assert {![string eq "$realtype" "$type"]} \
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$gdb_test_name
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}
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}
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# GDB should be able to expand the std::string typedef in the
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# function prototype using C++ logic even if the current language
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# is C.
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foreach_with_prefix lang {"c" "c++"} {
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gdb_test_no_output "set language $lang"
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gdb_test "break f($type)" "$srcfile, line $::decimal\\."
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if { $realtype != "" } {
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gdb_test "break f($realtype)" "$srcfile, line $::decimal\\."
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}
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}
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}
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foreach_with_prefix _GLIBCXX_USE_CXX11_ABI {0 1} {
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test $_GLIBCXX_USE_CXX11_ABI
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}
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