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72 lines
2.6 KiB
Rust
72 lines
2.6 KiB
Rust
//@ compile-flags:-g
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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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// gdb-check:$1 = generic_struct_style_enum::Regular<u16, u32, i64>::Case1{a: 0, b: 31868, c: 31868, d: 31868, e: 31868}
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// gdb-command:print case2
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// gdb-check:$2 = generic_struct_style_enum::Regular<i16, u32, i64>::Case2{a: 0, b: 286331153, c: 286331153}
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// gdb-command:print case3
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// gdb-check:$3 = generic_struct_style_enum::Regular<u16, i32, u64>::Case3{a: 0, b: 6438275382588823897}
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// gdb-command:print univariant
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// gdb-check:$4 = generic_struct_style_enum::Univariant<i32>::TheOnlyCase{a: -1}
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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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// NOTE: This is a copy of the non-generic test case. The `Txx` type parameters have to be
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// substituted with something of size `xx` bits and the same alignment as an integer type of the
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// same size.
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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<T16, T32, T64> {
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Case1 { a: T64, b: T16, c: T16, d: T16, e: T16},
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Case2 { a: T64, b: T32, c: T32},
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Case3 { a: T64, b: T64 }
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}
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enum Univariant<T> {
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TheOnlyCase { a: T }
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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: Regular<u16, u32, i64> = 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: Regular<i16, u32, i64> = 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: Regular<u16, i32, u64> = 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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