182 lines
5.8 KiB
Plaintext
182 lines
5.8 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# Copyright 2017-2018 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 GDB's awareness of the wchar_t (C++98+) and char16_t, char32_t
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# (C++11+) built-in types. We also run most tests here in C mode, and
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# check whether the built-ins are disabled (gdb uses the typedefs in
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# the debug info instead.)
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standard_testfile
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# Test char16_t/char32_t/wchar_t in language LANG, against symbols in
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# a program. Lang can be "c", "c++03" or "c++11". In C++11,
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# char16_t/char32_t are built-in types, and the debug information
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# reflects that (see
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# http://wiki.dwarfstd.org/index.php?title=C%2B%2B0x:_New_string_literals).
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proc wide_char_types_program {lang} {
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global srcfile testfile
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set options {debug}
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if {$lang == "c++03"} {
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lappend options c++ additional_flags=-std=c++03
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set out $testfile-cxx03
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} elseif {$lang == "c++11"} {
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lappend options c++ additional_flags=-std=c++11
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set out $testfile-cxx11
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} else {
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set out $testfile-c
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}
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if { [prepare_for_testing "failed to prepare" \
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${out} [list $srcfile] $options] } {
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return -1
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}
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if ![runto_main] then {
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fail "can't run to main"
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return 0
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}
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do_test_wide_char $lang "u16" "u32" "wchar"
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}
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# Test char16_t/char32_t/wchar_t in language LANG. Use CHAR16_EXP,
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# CHAR32_EXP, and WCHAR_EXP as expression for each of the
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# corresponding types. (E.g., CHAR16_EXP will be u16 when testing
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# against the program, and "(char16_t)-1" when testing the built-in
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# types without a program loaded.)
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proc do_test_wide_char {lang char16_exp char32_exp wchar_exp} {
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global gdb_prompt
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# Check that the fixed-width wide types are distinct built-in
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# types in C++11+. In other modes, they're instead typedefs,
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# found in the debug info.
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if {$lang == "c++11"} {
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gdb_test "ptype $char16_exp" "type = char16_t" \
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"char16_t is distinct"
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gdb_test "ptype $char32_exp" "type = char32_t" \
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"char32_t is distinct"
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} else {
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gdb_test "ptype $char16_exp" "type = unsigned (long|int|short)" \
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"char16_t is typedef"
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gdb_test "ptype $char32_exp" "type = unsigned (long|int|short)" \
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"char32_t is typedef"
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}
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# wchar_t is a disctinct built-in type in C++03+.
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if {$lang != "c"} {
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gdb_test "ptype $wchar_exp" "type = wchar_t" \
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"wchar_t is distinct"
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} else {
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gdb_test "ptype $wchar_exp" "type = (unsigned )?(long|int|short)" \
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"wchar_t is typedef"
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}
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# Check that the fixed-width wide char types are unsigned.
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gdb_test "p $char16_exp" " = 65535 u'\\\\xffff'" \
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"char16_t is unsigned"
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gdb_test "p $char32_exp" " = 4294967295 U'\\\\xffffffff'" \
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"char32_t is unsigned"
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# Whether wchar_t is signed is implementation-dependent. While we
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# ignore whether GDB got the ABI size/sign details right here,
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# this at least verifies that the value isn't garbage, and that
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# GDB correctly outputs the character using the "L" prefix.
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set test "wchar_t sign"
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gdb_test_multiple "p $wchar_exp" $test {
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-re " = 4294967295 L'\\\\xffffffff'\r\n$gdb_prompt $" {
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pass "$test (unsigned)"
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}
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-re " = 65535 L'\\\\xffff'\r\n$gdb_prompt $" {
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pass "$test (unsigned)"
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}
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-re " = -1 L'\\\\xffffffff'\r\n$gdb_prompt $" {
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pass "$test (signed)"
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}
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-re " = -1 L'\\\\xffff'\r\n$gdb_prompt $" {
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pass "$test (signed)"
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}
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}
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# Check sizeof. These are fixed-width.
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gdb_test "p sizeof($char16_exp)" "= 2" \
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"sizeof($char16_exp) == 2"
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gdb_test "p sizeof($char32_exp)" "= 4" \
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"sizeof(char16_t) == 4"
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# Size of wchar_t depends on ABI.
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gdb_test "p sizeof($wchar_exp)" "= (2|4)" \
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"sizeof(wchar_t)"
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# Test printing wide literal strings. Note that when testing with
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# no program started, this relies on GDB's awareness of the
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# built-in wide char types.
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gdb_test {p U"hello"} {= U"hello"}
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gdb_test {p u"hello"} {= u"hello"}
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gdb_test {p L"hello"} {= L"hello"}
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}
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# Make sure that the char16_t/char32_t/wchar_t types are recognized as
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# distinct built-in types in C++ mode, even with no program loaded.
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# Check that in C mode, the types are not recognized.
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proc wide_char_types_no_program {} {
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global srcfile testfile
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gdb_exit
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gdb_start
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# These types are not built-in in C.
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with_test_prefix "c" {
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gdb_test "set language c"
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gdb_test "p (char16_t) -1" "No symbol table is loaded.*" \
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"char16_t is not built-in"
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gdb_test "p (char32_t) -1" "No symbol table is loaded.*" \
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"char32_t is not built-in"
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gdb_test "p (wchar_t) -1" "No symbol table is loaded.*" \
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"wchar_t is not built-in"
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gdb_test {p U"hello"} "No type named char32_t\\\."
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gdb_test {p u"hello"} "No type named char16_t\\\."
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gdb_test {p L"hello"} "No type named wchar_t\\\."
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}
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# Note GDB does not distinguish C++ dialects, so the fixed-width
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# types are always available in C++ mode, even if they were not
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# built-in types before C++11.
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with_test_prefix "c++" {
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gdb_test "set language c++"
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do_test_wide_char "c++11" "(char16_t) -1" "(char32_t) -1" "(wchar_t) -1"
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}
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}
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# Check wide char types with no program loaded.
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with_test_prefix "no program" {
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wide_char_types_no_program
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}
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# Check types when a program is loaded.
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with_test_prefix "with program" {
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foreach_with_prefix lang {"c" "c++03" "c++11"} {
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wide_char_types_program $lang
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}
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}
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