tests/debuginfo/unique-enum.rs

   1 // Require a gdb or lldb that can read DW_TAG_variant_part.
   2 // min-gdb-version: 8.2
   3 // rust-lldb
   4
   5 // compile-flags:-g
   6
   7 // === GDB TESTS ===================================================================================
   8
   9 // gdb-command:run
  10
  11 // gdb-command:print *the_a
  12 // gdbr-check:$1 = unique_enum::ABC::TheA{x: 0, y: 8970181431921507452}
  13
  14 // gdb-command:print *the_b
  15 // gdbr-check:$2 = unique_enum::ABC::TheB(0, 286331153, 286331153)
  16
  17 // gdb-command:print *univariant
  18 // gdbr-check:$3 = unique_enum::Univariant::TheOnlyCase(123234)
  19
  20
  21 // === LLDB TESTS ==================================================================================
  22
  23 // lldb-command:run
  24
  25 // lldb-command:print *the_a
  26 // lldbr-check:(unique_enum::ABC::TheA) *the_a = TheA { TheA: 0, TheB: 8970181431921507452 }
  27
  28 // lldb-command:print *the_b
  29 // lldbr-check:(unique_enum::ABC::TheB) *the_b = { = 0 = 286331153 = 286331153 }
  30
  31 // lldb-command:print *univariant
  32 // lldbr-check:(unique_enum::Univariant) *univariant = { TheOnlyCase = { = 123234 } }
  33
  34 #![allow(unused_variables)]
  35 #![feature(omit_gdb_pretty_printer_section)]
  36 #![omit_gdb_pretty_printer_section]
  37
  38 // The first element is to ensure proper alignment, irrespective of the machines word size. Since
  39 // the size of the discriminant value is machine dependent, this has be taken into account when
  40 // datatype layout should be predictable as in this case.
  41 enum ABC {
  42     TheA { x: i64, y: i64 },
  43     TheB (i64, i32, i32),
  44 }
  45
  46 // This is a special case since it does not have the implicit discriminant field.
  47 enum Univariant {
  48     TheOnlyCase(i64)
  49 }
  50
  51 fn main() {
  52
  53     // In order to avoid endianness trouble all of the following test values consist of a single
  54     // repeated byte. This way each interpretation of the union should look the same, no matter if
  55     // this is a big or little endian machine.
  56
  57     // 0b0111110001111100011111000111110001111100011111000111110001111100 = 8970181431921507452
  58     // 0b01111100011111000111110001111100 = 2088533116
  59     // 0b0111110001111100 = 31868
  60     // 0b01111100 = 124
  61     let the_a: Box<_> = Box::new(ABC::TheA { x: 0, y: 8970181431921507452 });
  62
  63     // 0b0001000100010001000100010001000100010001000100010001000100010001 = 1229782938247303441
  64     // 0b00010001000100010001000100010001 = 286331153
  65     // 0b0001000100010001 = 4369
  66     // 0b00010001 = 17
  67     let the_b: Box<_> = Box::new(ABC::TheB (0, 286331153, 286331153));
  68
  69     let univariant: Box<_> = Box::new(Univariant::TheOnlyCase(123234));
  70
  71     zzz(); // #break
  72 }
  73
  74 fn zzz() {()}