1 // Require a gdb or lldb that can read DW_TAG_variant_part.
2 // min-gdb-version: 8.2
7 // === GDB TESTS ===================================================================================
9 // gdb-command:set print union on
12 // gdb-command:print case1
13 // gdbr-check:$1 = struct_style_enum::Regular::Case1{a: 0, b: 31868, c: 31868, d: 31868, e: 31868}
15 // gdb-command:print case2
16 // gdbr-check:$2 = struct_style_enum::Regular::Case2{a: 0, b: 286331153, c: 286331153}
18 // gdb-command:print case3
19 // gdbr-check:$3 = struct_style_enum::Regular::Case3{a: 0, b: 6438275382588823897}
21 // gdb-command:print univariant
22 // gdbr-check:$4 = struct_style_enum::Univariant::TheOnlyCase{a: -1}
25 // === LLDB TESTS ==================================================================================
29 // lldb-command:print case1
30 // lldbr-check:(struct_style_enum::Regular::Case1) case1 = { a = 0 b = 31868 c = 31868 d = 31868 e = 31868 }
32 // lldb-command:print case2
33 // lldbr-check:(struct_style_enum::Regular::Case2) case2 = Case2 { Case1: 0, Case2: 286331153, Case3: 286331153 }
35 // lldb-command:print case3
36 // lldbr-check:(struct_style_enum::Regular::Case3) case3 = Case3 { Case1: 0, Case2: 6438275382588823897 }
38 // lldb-command:print univariant
39 // lldbr-check:(struct_style_enum::Univariant) univariant = Univariant { TheOnlyCase: TheOnlyCase { a: -1 } }
41 #![allow(unused_variables)]
42 #![feature(omit_gdb_pretty_printer_section)]
43 #![omit_gdb_pretty_printer_section]
45 use self::Regular::{Case1, Case2, Case3};
46 use self::Univariant::TheOnlyCase;
48 // The first element is to ensure proper alignment, irrespective of the machines word size. Since
49 // the size of the discriminant value is machine dependent, this has be taken into account when
50 // datatype layout should be predictable as in this case.
52 Case1 { a: u64, b: u16, c: u16, d: u16, e: u16},
53 Case2 { a: u64, b: u32, c: u32},
54 Case3 { a: u64, b: u64 }
58 TheOnlyCase { a: i64 }
63 // In order to avoid endianness trouble all of the following test values consist of a single
64 // repeated byte. This way each interpretation of the union should look the same, no matter if
65 // this is a big or little endian machine.
67 // 0b0111110001111100011111000111110001111100011111000111110001111100 = 8970181431921507452
68 // 0b01111100011111000111110001111100 = 2088533116
69 // 0b0111110001111100 = 31868
71 let case1 = Case1 { a: 0, b: 31868, c: 31868, d: 31868, e: 31868 };
73 // 0b0001000100010001000100010001000100010001000100010001000100010001 = 1229782938247303441
74 // 0b00010001000100010001000100010001 = 286331153
75 // 0b0001000100010001 = 4369
77 let case2 = Case2 { a: 0, b: 286331153, c: 286331153 };
79 // 0b0101100101011001010110010101100101011001010110010101100101011001 = 6438275382588823897
80 // 0b01011001010110010101100101011001 = 1499027801
81 // 0b0101100101011001 = 22873
83 let case3 = Case3 { a: 0, b: 6438275382588823897 };
85 let univariant = TheOnlyCase { a: -1 };