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1 | # This testcase is part of GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | # Copyright 2017-2020 Free Software Foundation, Inc. |
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4 | |
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. | |
9 | # | |
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. | |
14 | # | |
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/>. | |
17 | ||
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18 | # Test GDB's awareness of the wchar_t (C++98+) and char16_t, char32_t |
19 | # (C++11+) built-in types. We also run most tests here in C mode, and | |
20 | # check whether the built-ins are disabled (gdb uses the typedefs in | |
21 | # the debug info instead.) | |
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22 | |
23 | standard_testfile | |
24 | ||
53375380 | 25 | # Test char16_t/char32_t/wchar_t in language LANG, against symbols in |
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26 | # a program. Lang can be "c", "c++03" or "c++11". In C++11, |
27 | # char16_t/char32_t are built-in types, and the debug information | |
28 | # reflects that (see | |
29 | # http://wiki.dwarfstd.org/index.php?title=C%2B%2B0x:_New_string_literals). | |
30 | ||
31 | proc wide_char_types_program {lang} { | |
32 | global srcfile testfile | |
33 | ||
34 | set options {debug} | |
35 | if {$lang == "c++03"} { | |
36 | lappend options c++ additional_flags=-std=c++03 | |
37 | set out $testfile-cxx03 | |
38 | } elseif {$lang == "c++11"} { | |
39 | lappend options c++ additional_flags=-std=c++11 | |
40 | set out $testfile-cxx11 | |
41 | } else { | |
42 | set out $testfile-c | |
43 | } | |
44 | ||
45 | if { [prepare_for_testing "failed to prepare" \ | |
46 | ${out} [list $srcfile] $options] } { | |
47 | return -1 | |
48 | } | |
49 | ||
50 | if ![runto_main] then { | |
51 | fail "can't run to main" | |
52 | return 0 | |
53 | } | |
53375380 | 54 | do_test_wide_char $lang "u16" "u32" "wchar" |
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55 | } |
56 | ||
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57 | # Test char16_t/char32_t/wchar_t in language LANG. Use CHAR16_EXP, |
58 | # CHAR32_EXP, and WCHAR_EXP as expression for each of the | |
59 | # corresponding types. (E.g., CHAR16_EXP will be u16 when testing | |
60 | # against the program, and "(char16_t)-1" when testing the built-in | |
61 | # types without a program loaded.) | |
53e710ac | 62 | |
53375380 | 63 | proc do_test_wide_char {lang char16_exp char32_exp wchar_exp} { |
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64 | global gdb_prompt |
65 | ||
66 | # Check that the fixed-width wide types are distinct built-in | |
67 | # types in C++11+. In other modes, they're instead typedefs, | |
68 | # found in the debug info. | |
69 | if {$lang == "c++11"} { | |
70 | gdb_test "ptype $char16_exp" "type = char16_t" \ | |
71 | "char16_t is distinct" | |
72 | gdb_test "ptype $char32_exp" "type = char32_t" \ | |
73 | "char32_t is distinct" | |
74 | } else { | |
75 | gdb_test "ptype $char16_exp" "type = unsigned (long|int|short)" \ | |
76 | "char16_t is typedef" | |
77 | gdb_test "ptype $char32_exp" "type = unsigned (long|int|short)" \ | |
78 | "char32_t is typedef" | |
79 | } | |
80 | ||
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81 | # wchar_t is a disctinct built-in type in C++03+. |
82 | if {$lang != "c"} { | |
83 | gdb_test "ptype $wchar_exp" "type = wchar_t" \ | |
84 | "wchar_t is distinct" | |
85 | } else { | |
86 | gdb_test "ptype $wchar_exp" "type = (unsigned )?(long|int|short)" \ | |
87 | "wchar_t is typedef" | |
88 | } | |
89 | ||
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90 | # Check that the fixed-width wide char types are unsigned. |
91 | gdb_test "p $char16_exp" " = 65535 u'\\\\xffff'" \ | |
92 | "char16_t is unsigned" | |
93 | gdb_test "p $char32_exp" " = 4294967295 U'\\\\xffffffff'" \ | |
94 | "char32_t is unsigned" | |
95 | ||
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96 | # Whether wchar_t is signed is implementation-dependent. While we |
97 | # ignore whether GDB got the ABI size/sign details right here, | |
98 | # this at least verifies that the value isn't garbage, and that | |
99 | # GDB correctly outputs the character using the "L" prefix. | |
100 | set test "wchar_t sign" | |
101 | gdb_test_multiple "p $wchar_exp" $test { | |
102 | -re " = 4294967295 L'\\\\xffffffff'\r\n$gdb_prompt $" { | |
103 | pass "$test (unsigned)" | |
104 | } | |
105 | -re " = 65535 L'\\\\xffff'\r\n$gdb_prompt $" { | |
106 | pass "$test (unsigned)" | |
107 | } | |
108 | -re " = -1 L'\\\\xffffffff'\r\n$gdb_prompt $" { | |
109 | pass "$test (signed)" | |
110 | } | |
111 | -re " = -1 L'\\\\xffff'\r\n$gdb_prompt $" { | |
112 | pass "$test (signed)" | |
113 | } | |
114 | } | |
115 | ||
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116 | # Check sizeof. These are fixed-width. |
117 | gdb_test "p sizeof($char16_exp)" "= 2" \ | |
118 | "sizeof($char16_exp) == 2" | |
119 | gdb_test "p sizeof($char32_exp)" "= 4" \ | |
120 | "sizeof(char16_t) == 4" | |
121 | ||
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122 | # Size of wchar_t depends on ABI. |
123 | gdb_test "p sizeof($wchar_exp)" "= (2|4)" \ | |
124 | "sizeof(wchar_t)" | |
125 | ||
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126 | # Test printing wide literal strings. Note that when testing with |
127 | # no program started, this relies on GDB's awareness of the | |
128 | # built-in wide char types. | |
129 | gdb_test {p U"hello"} {= U"hello"} | |
130 | gdb_test {p u"hello"} {= u"hello"} | |
53375380 | 131 | gdb_test {p L"hello"} {= L"hello"} |
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132 | } |
133 | ||
53375380 | 134 | # Make sure that the char16_t/char32_t/wchar_t types are recognized as |
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135 | # distinct built-in types in C++ mode, even with no program loaded. |
136 | # Check that in C mode, the types are not recognized. | |
137 | ||
138 | proc wide_char_types_no_program {} { | |
139 | global srcfile testfile | |
140 | ||
141 | gdb_exit | |
142 | gdb_start | |
143 | ||
144 | # These types are not built-in in C. | |
145 | with_test_prefix "c" { | |
146 | gdb_test "set language c" | |
147 | ||
148 | gdb_test "p (char16_t) -1" "No symbol table is loaded.*" \ | |
149 | "char16_t is not built-in" | |
150 | gdb_test "p (char32_t) -1" "No symbol table is loaded.*" \ | |
151 | "char32_t is not built-in" | |
152 | ||
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153 | gdb_test "p (wchar_t) -1" "No symbol table is loaded.*" \ |
154 | "wchar_t is not built-in" | |
155 | ||
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156 | gdb_test {p U"hello"} "No type named char32_t\\\." |
157 | gdb_test {p u"hello"} "No type named char16_t\\\." | |
53375380 | 158 | gdb_test {p L"hello"} "No type named wchar_t\\\." |
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159 | } |
160 | ||
161 | # Note GDB does not distinguish C++ dialects, so the fixed-width | |
162 | # types are always available in C++ mode, even if they were not | |
163 | # built-in types before C++11. | |
164 | with_test_prefix "c++" { | |
165 | gdb_test "set language c++" | |
166 | ||
53375380 | 167 | do_test_wide_char "c++11" "(char16_t) -1" "(char32_t) -1" "(wchar_t) -1" |
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168 | } |
169 | } | |
170 | ||
171 | # Check wide char types with no program loaded. | |
172 | with_test_prefix "no program" { | |
173 | wide_char_types_no_program | |
174 | } | |
175 | ||
176 | # Check types when a program is loaded. | |
177 | with_test_prefix "with program" { | |
178 | foreach_with_prefix lang {"c" "c++03" "c++11"} { | |
179 | wide_char_types_program $lang | |
180 | } | |
181 | } |