mirror of https://github.com/rust-lang/rust
94 lines
3.5 KiB
Rust
94 lines
3.5 KiB
Rust
// Require a gdb or lldb that can read DW_TAG_variant_part.
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//@ min-gdb-version: 8.2
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//@ min-lldb-version: 1800
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//@ compile-flags:-g
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// === GDB TESTS ===================================================================================
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// gdb-command:set print union on
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// gdb-command:run
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// gdb-command:print case1
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// gdbr-check:$1 = struct_style_enum::Regular::Case1{a: 0, b: 31868, c: 31868, d: 31868, e: 31868}
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// gdb-command:print case2
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// gdbr-check:$2 = struct_style_enum::Regular::Case2{a: 0, b: 286331153, c: 286331153}
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// gdb-command:print case3
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// gdbr-check:$3 = struct_style_enum::Regular::Case3{a: 0, b: 6438275382588823897}
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// gdb-command:print univariant
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// gdbr-check:$4 = struct_style_enum::Univariant::TheOnlyCase{a: -1}
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// === LLDB TESTS ==================================================================================
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// lldb-command:run
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// lldb-command:v case1
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// lldbg-check:(struct_style_enum::Regular) case1 = { value = { a = 0 b = 31868 c = 31868 d = 31868 e = 31868 } $discr$ = 0 }
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// lldbr-check:(struct_style_enum::Regular::Case1) case1 = { a = 0 b = 31868 c = 31868 d = 31868 e = 31868 }
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// lldb-command:v case2
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// lldbg-check:(struct_style_enum::Regular) case2 = { value = { a = 0 b = 286331153 c = 286331153 } $discr$ = 1 }
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// lldbr-check:(struct_style_enum::Regular::Case2) case2 = Case2 { Case1: 0, Case2: 286331153, Case3: 286331153 }
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// lldb-command:v case3
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// lldbg-check:(struct_style_enum::Regular) case3 = { value = { a = 0 b = 6438275382588823897 } $discr$ = 2 }
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// lldbr-check:(struct_style_enum::Regular::Case3) case3 = Case3 { Case1: 0, Case2: 6438275382588823897 }
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// lldb-command:v univariant
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// lldbg-check:(struct_style_enum::Univariant) univariant = { value = { a = -1 } }
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// lldbr-check:(struct_style_enum::Univariant) univariant = Univariant { TheOnlyCase: TheOnlyCase { a: -1 } }
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#![allow(unused_variables)]
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#![feature(omit_gdb_pretty_printer_section)]
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#![omit_gdb_pretty_printer_section]
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use self::Regular::{Case1, Case2, Case3};
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use self::Univariant::TheOnlyCase;
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// The first element is to ensure proper alignment, irrespective of the machines word size. Since
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// the size of the discriminant value is machine dependent, this has be taken into account when
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// datatype layout should be predictable as in this case.
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enum Regular {
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Case1 { a: u64, b: u16, c: u16, d: u16, e: u16},
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Case2 { a: u64, b: u32, c: u32},
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Case3 { a: u64, b: u64 }
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}
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enum Univariant {
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TheOnlyCase { a: i64 }
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}
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fn main() {
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// In order to avoid endianness trouble all of the following test values consist of a single
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// repeated byte. This way each interpretation of the union should look the same, no matter if
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// this is a big or little endian machine.
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// 0b0111110001111100011111000111110001111100011111000111110001111100 = 8970181431921507452
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// 0b01111100011111000111110001111100 = 2088533116
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// 0b0111110001111100 = 31868
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// 0b01111100 = 124
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let case1 = Case1 { a: 0, b: 31868, c: 31868, d: 31868, e: 31868 };
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// 0b0001000100010001000100010001000100010001000100010001000100010001 = 1229782938247303441
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// 0b00010001000100010001000100010001 = 286331153
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// 0b0001000100010001 = 4369
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// 0b00010001 = 17
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let case2 = Case2 { a: 0, b: 286331153, c: 286331153 };
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// 0b0101100101011001010110010101100101011001010110010101100101011001 = 6438275382588823897
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// 0b01011001010110010101100101011001 = 1499027801
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// 0b0101100101011001 = 22873
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// 0b01011001 = 89
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let case3 = Case3 { a: 0, b: 6438275382588823897 };
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let univariant = TheOnlyCase { a: -1 };
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zzz(); // #break
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}
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fn zzz() {()}
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