1 // ignore-tidy-linelength
2 // min-lldb-version: 310
4 // Require LLVM with DW_TAG_variant_part and a gdb that can read it.
5 // min-system-llvm-version: 8.0
6 // min-gdb-version: 8.2
10 // gdb-command:set print union on
13 // gdb-command:print case1
14 // gdbr-check:$1 = generic_struct_style_enum::Regular<u16, u32, i64>::Case1{a: 0, b: 31868, c: 31868, d: 31868, e: 31868}
16 // gdb-command:print case2
17 // gdbr-check:$2 = generic_struct_style_enum::Regular<i16, u32, i64>::Case2{a: 0, b: 286331153, c: 286331153}
19 // gdb-command:print case3
20 // gdbr-check:$3 = generic_struct_style_enum::Regular<u16, i32, u64>::Case3{a: 0, b: 6438275382588823897}
22 // gdb-command:print univariant
23 // gdbr-check:$4 = generic_struct_style_enum::Univariant<i32>::TheOnlyCase{a: -1}
26 #![feature(omit_gdb_pretty_printer_section)]
27 #![omit_gdb_pretty_printer_section]
29 use self::Regular::{Case1, Case2, Case3};
30 use self::Univariant::TheOnlyCase;
32 // NOTE: This is a copy of the non-generic test case. The `Txx` type parameters have to be
33 // substituted with something of size `xx` bits and the same alignment as an integer type of the
36 // The first element is to ensure proper alignment, irrespective of the machines word size. Since
37 // the size of the discriminant value is machine dependent, this has be taken into account when
38 // datatype layout should be predictable as in this case.
39 enum Regular<T16, T32, T64> {
40 Case1 { a: T64, b: T16, c: T16, d: T16, e: T16},
41 Case2 { a: T64, b: T32, c: T32},
42 Case3 { a: T64, b: T64 }
51 // In order to avoid endianness trouble all of the following test values consist of a single
52 // repeated byte. This way each interpretation of the union should look the same, no matter if
53 // this is a big or little endian machine.
55 // 0b0111110001111100011111000111110001111100011111000111110001111100 = 8970181431921507452
56 // 0b01111100011111000111110001111100 = 2088533116
57 // 0b0111110001111100 = 31868
59 let case1: Regular<u16, u32, i64> = Case1 { a: 0, b: 31868, c: 31868, d: 31868, e: 31868 };
61 // 0b0001000100010001000100010001000100010001000100010001000100010001 = 1229782938247303441
62 // 0b00010001000100010001000100010001 = 286331153
63 // 0b0001000100010001 = 4369
65 let case2: Regular<i16, u32, i64> = Case2 { a: 0, b: 286331153, c: 286331153 };
67 // 0b0101100101011001010110010101100101011001010110010101100101011001 = 6438275382588823897
68 // 0b01011001010110010101100101011001 = 1499027801
69 // 0b0101100101011001 = 22873
71 let case3: Regular<u16, i32, u64> = Case3 { a: 0, b: 6438275382588823897 };
73 let univariant = TheOnlyCase { a: -1 };