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tromeytromey
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Update enum debuginfo tests
Bug #52452 notes some debuginfo test regressions when moving to gdb 8.1. This series will also cause versions of gdb before 8.2 to fail when a recent LLVM is used -- DW_TAG_variant_part support was not added until 8.2. This patch updates one of the builders to a later version of Ubuntu, which comes with gdb 8.2. It updates the relevant tests to require both a new-enough LLVM and a new-enough gdb; the subsequent patch arranges to continue testing the fallback mode. The "gdbg" results are removed from these tests because the tests now require a rust-enabled gdb. If you read closely, you'll see that some of the lldb results in this patch still look a bit strange. This will be addressed in a subsequent patch; I believe the fix is to disable the Python pretty-printers when lldb is rust-enabled.
1 parent da7b6b4 commit 8bbb62f

15 files changed

+96
-112
lines changed

‎src/ci/docker/x86_64-gnu/Dockerfile

+1-1
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
FROM ubuntu:16.04
1+
FROM ubuntu:18.10
22

33
RUN apt-get update && apt-get install -y --no-install-recommends \
44
g++ \

‎src/test/debuginfo/basic-types.rs

+4
Original file line numberDiff line numberDiff line change
@@ -16,6 +16,10 @@
1616

1717
// min-lldb-version: 310
1818

19+
// This fails on lldb 6.0.1 on x86-64 Fedora 28; so mark it macOS-only
20+
// for now.
21+
// only-macos
22+
1923
// compile-flags:-g
2024

2125
// === GDB TESTS ===================================================================================

‎src/test/debuginfo/borrowed-enum.rs

+7-10
Original file line numberDiff line numberDiff line change
@@ -9,8 +9,11 @@
99
// except according to those terms.
1010

1111
// ignore-tidy-linelength
12-
// min-lldb-version: 310
13-
// ignore-gdb-version: 7.11.90 - 7.12.9
12+
13+
// Require LLVM with DW_TAG_variant_part and a gdb or lldb that can read it.
14+
// min-system-llvm-version: 7.0
15+
// min-gdb-version: 8.2
16+
// rust-lldb
1417

1518
// compile-flags:-g
1619

@@ -19,15 +22,12 @@
1922
// gdb-command:run
2023

2124
// gdb-command:print *the_a_ref
22-
// gdbg-check:$1 = {{RUST$ENUM$DISR = TheA, x = 0, y = 8970181431921507452}, {RUST$ENUM$DISR = TheA, [...]}}
2325
// gdbr-check:$1 = borrowed_enum::ABC::TheA{x: 0, y: 8970181431921507452}
2426

2527
// gdb-command:print *the_b_ref
26-
// gdbg-check:$2 = {{RUST$ENUM$DISR = TheB, [...]}, {RUST$ENUM$DISR = TheB, __0 = 0, __1 = 286331153, __2 = 286331153}}
2728
// gdbr-check:$2 = borrowed_enum::ABC::TheB(0, 286331153, 286331153)
2829

2930
// gdb-command:print *univariant_ref
30-
// gdbg-check:$3 = {{__0 = 4820353753753434}}
3131
// gdbr-check:$3 = borrowed_enum::Univariant::TheOnlyCase(4820353753753434)
3232

3333

@@ -36,14 +36,11 @@
3636
// lldb-command:run
3737

3838
// lldb-command:print *the_a_ref
39-
// lldbg-check:[...]$0 = TheA { x: 0, y: 8970181431921507452 }
40-
// lldbr-check:(borrowed_enum::ABC::TheA) *the_a_ref = TheA { borrowed_enum::ABC::TheA: 0, borrowed_enum::ABC::TheB: 8970181431921507452 }
39+
// lldbr-check:(borrowed_enum::ABC::TheA) *the_a_ref = TheA { TheA: 0, TheB: 8970181431921507452 }
4140
// lldb-command:print *the_b_ref
42-
// lldbg-check:[...]$1 = TheB(0, 286331153, 286331153)
4341
// lldbr-check:(borrowed_enum::ABC::TheB) *the_b_ref = { = 0 = 286331153 = 286331153 }
4442
// lldb-command:print *univariant_ref
45-
// lldbg-check:[...]$2 = TheOnlyCase(4820353753753434)
46-
// lldbr-check:(borrowed_enum::Univariant) *univariant_ref = { borrowed_enum::TheOnlyCase = { = 4820353753753434 } }
43+
// lldbr-check:(borrowed_enum::Univariant) *univariant_ref = { TheOnlyCase = { = 4820353753753434 } }
4744

4845
#![allow(unused_variables)]
4946
#![feature(omit_gdb_pretty_printer_section)]

‎src/test/debuginfo/cross-crate-spans.rs

+4
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@@ -13,6 +13,10 @@
1313

1414
// min-lldb-version: 310
1515

16+
// This fails on lldb 6.0.1 on x86-64 Fedora 28; so mark it macOS-only
17+
// for now.
18+
// only-macos
19+
1620
// aux-build:cross_crate_spans.rs
1721
extern crate cross_crate_spans;
1822

‎src/test/debuginfo/destructured-for-loop-variable.rs

+4
Original file line numberDiff line numberDiff line change
@@ -12,6 +12,10 @@
1212

1313
// min-lldb-version: 310
1414

15+
// This fails on lldb 6.0.1 on x86-64 Fedora 28; so mark it macOS-only
16+
// for now.
17+
// only-macos
18+
1519
// compile-flags:-g
1620

1721
// === GDB TESTS ===================================================================================

‎src/test/debuginfo/generic-enum-with-different-disr-sizes.rs

+12-16
Original file line numberDiff line numberDiff line change
@@ -12,43 +12,39 @@
1212
// ignore-lldb: FIXME(#27089)
1313
// min-lldb-version: 310
1414

15+
// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
16+
// min-system-llvm-version: 7.0
17+
// min-gdb-version: 8.2
18+
1519
// compile-flags:-g
1620

1721
// === GDB TESTS ===================================================================================
1822
// gdb-command:run
1923

2024
// gdb-command:print eight_bytes1
21-
// gdbg-check:$1 = {{RUST$ENUM$DISR = Variant1, __0 = 100}, {RUST$ENUM$DISR = Variant1, __0 = 100}}
22-
// gdbr-check:$1 = generic_enum_with_different_disr_sizes::Enum::Variant1(100)
25+
// gdbr-check:$1 = generic_enum_with_different_disr_sizes::Enum<f64>::Variant1(100)
2326

2427
// gdb-command:print four_bytes1
25-
// gdbg-check:$2 = {{RUST$ENUM$DISR = Variant1, __0 = 101}, {RUST$ENUM$DISR = Variant1, __0 = 101}}
26-
// gdbr-check:$2 = generic_enum_with_different_disr_sizes::Enum::Variant1(101)
28+
// gdbr-check:$2 = generic_enum_with_different_disr_sizes::Enum<i32>::Variant1(101)
2729

2830
// gdb-command:print two_bytes1
29-
// gdbg-check:$3 = {{RUST$ENUM$DISR = Variant1, __0 = 102}, {RUST$ENUM$DISR = Variant1, __0 = 102}}
30-
// gdbr-check:$3 = generic_enum_with_different_disr_sizes::Enum::Variant1(102)
31+
// gdbr-check:$3 = generic_enum_with_different_disr_sizes::Enum<i16>::Variant1(102)
3132

3233
// gdb-command:print one_byte1
33-
// gdbg-check:$4 = {{RUST$ENUM$DISR = Variant1, __0 = 65 'A'}, {RUST$ENUM$DISR = Variant1, __0 = 65 'A'}}
34-
// gdbr-check:$4 = generic_enum_with_different_disr_sizes::Enum::Variant1(65)
34+
// gdbr-check:$4 = generic_enum_with_different_disr_sizes::Enum<u8>::Variant1(65)
3535

3636

3737
// gdb-command:print eight_bytes2
38-
// gdbg-check:$5 = {{RUST$ENUM$DISR = Variant2, __0 = 100}, {RUST$ENUM$DISR = Variant2, __0 = 100}}
39-
// gdbr-check:$5 = generic_enum_with_different_disr_sizes::Enum::Variant2(100)
38+
// gdbr-check:$5 = generic_enum_with_different_disr_sizes::Enum<f64>::Variant2(100)
4039

4140
// gdb-command:print four_bytes2
42-
// gdbg-check:$6 = {{RUST$ENUM$DISR = Variant2, __0 = 101}, {RUST$ENUM$DISR = Variant2, __0 = 101}}
43-
// gdbr-check:$6 = generic_enum_with_different_disr_sizes::Enum::Variant2(101)
41+
// gdbr-check:$6 = generic_enum_with_different_disr_sizes::Enum<i32>::Variant2(101)
4442

4543
// gdb-command:print two_bytes2
46-
// gdbg-check:$7 = {{RUST$ENUM$DISR = Variant2, __0 = 102}, {RUST$ENUM$DISR = Variant2, __0 = 102}}
47-
// gdbr-check:$7 = generic_enum_with_different_disr_sizes::Enum::Variant2(102)
44+
// gdbr-check:$7 = generic_enum_with_different_disr_sizes::Enum<i16>::Variant2(102)
4845

4946
// gdb-command:print one_byte2
50-
// gdbg-check:$8 = {{RUST$ENUM$DISR = Variant2, __0 = 65 'A'}, {RUST$ENUM$DISR = Variant2, __0 = 65 'A'}}
51-
// gdbr-check:$8 = generic_enum_with_different_disr_sizes::Enum::Variant2(65)
47+
// gdbr-check:$8 = generic_enum_with_different_disr_sizes::Enum<u8>::Variant2(65)
5248

5349
// gdb-command:continue
5450

‎src/test/debuginfo/generic-struct-style-enum.rs

+7-8
Original file line numberDiff line numberDiff line change
@@ -10,27 +10,26 @@
1010

1111
// ignore-tidy-linelength
1212
// min-lldb-version: 310
13-
// ignore-gdb-version: 7.11.90 - 7.12.9
13+
14+
// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
15+
// min-system-llvm-version: 7.0
16+
// min-gdb-version: 8.2
1417

1518
// compile-flags:-g
1619

1720
// gdb-command:set print union on
1821
// gdb-command:run
1922

2023
// gdb-command:print case1
21-
// gdbg-check:$1 = {{RUST$ENUM$DISR = Case1, a = 0, b = 31868, c = 31868, d = 31868, e = 31868}, {RUST$ENUM$DISR = Case1, [...]}, {RUST$ENUM$DISR = Case1, [...]}}
22-
// gdbr-check:$1 = generic_struct_style_enum::Regular::Case1{a: 0, b: 31868, c: 31868, d: 31868, e: 31868}
24+
// gdbr-check:$1 = generic_struct_style_enum::Regular<u16, u32, i64>::Case1{a: 0, b: 31868, c: 31868, d: 31868, e: 31868}
2325

2426
// gdb-command:print case2
25-
// gdbg-check:$2 = {{RUST$ENUM$DISR = Case2, [...]}, {RUST$ENUM$DISR = Case2, a = 0, b = 286331153, c = 286331153}, {RUST$ENUM$DISR = Case2, [...]}}
26-
// gdbr-check:$2 = generic_struct_style_enum::Regular::Case2{a: 0, b: 286331153, c: 286331153}
27+
// gdbr-check:$2 = generic_struct_style_enum::Regular<i16, u32, i64>::Case2{a: 0, b: 286331153, c: 286331153}
2728

2829
// gdb-command:print case3
29-
// gdbg-check:$3 = {{RUST$ENUM$DISR = Case3, [...]}, {RUST$ENUM$DISR = Case3, [...]}, {RUST$ENUM$DISR = Case3, a = 0, b = 6438275382588823897}}
30-
// gdbr-check:$3 = generic_struct_style_enum::Regular::Case3{a: 0, b: 6438275382588823897}
30+
// gdbr-check:$3 = generic_struct_style_enum::Regular<u16, i32, u64>::Case3{a: 0, b: 6438275382588823897}
3131

3232
// gdb-command:print univariant
33-
// gdbg-check:$4 = {{a = -1}}
3433
// gdbr-check:$4 = generic_struct_style_enum::Univariant<i32>::TheOnlyCase{a: -1}
3534

3635

‎src/test/debuginfo/generic-tuple-style-enum.rs

+12-16
Original file line numberDiff line numberDiff line change
@@ -9,8 +9,12 @@
99
// except according to those terms.
1010

1111
// ignore-tidy-linelength
12-
// min-lldb-version: 310
13-
// ignore-gdb-version: 7.11.90 - 7.12.9
12+
13+
// Require LLVM with DW_TAG_variant_part and a gdb and lldb that can
14+
// read it.
15+
// min-system-llvm-version: 7.0
16+
// min-gdb-version: 8.2
17+
// rust-lldb
1418

1519
// compile-flags:-g
1620

@@ -20,19 +24,15 @@
2024
// gdb-command:run
2125

2226
// gdb-command:print case1
23-
// gdbg-check:$1 = {{RUST$ENUM$DISR = Case1, __0 = 0, __1 = 31868, __2 = 31868, __3 = 31868, __4 = 31868}, {RUST$ENUM$DISR = Case1, [...]}, {RUST$ENUM$DISR = Case1, [...]}}
24-
// gdbr-check:$1 = generic_tuple_style_enum::Regular::Case1(0, 31868, 31868, 31868, 31868)
27+
// gdbr-check:$1 = generic_tuple_style_enum::Regular<u16, u32, u64>::Case1(0, 31868, 31868, 31868, 31868)
2528

2629
// gdb-command:print case2
27-
// gdbg-check:$2 = {{RUST$ENUM$DISR = Case2, [...]}, {RUST$ENUM$DISR = Case2, __0 = 0, __1 = 286331153, __2 = 286331153}, {RUST$ENUM$DISR = Case2, [...]}}
28-
// gdbr-check:$2 = generic_tuple_style_enum::Regular::Case2(0, 286331153, 286331153)
30+
// gdbr-check:$2 = generic_tuple_style_enum::Regular<i16, i32, i64>::Case2(0, 286331153, 286331153)
2931

3032
// gdb-command:print case3
31-
// gdbg-check:$3 = {{RUST$ENUM$DISR = Case3, [...]}, {RUST$ENUM$DISR = Case3, [...]}, {RUST$ENUM$DISR = Case3, __0 = 0, __1 = 6438275382588823897}}
32-
// gdbr-check:$3 = generic_tuple_style_enum::Regular::Case3(0, 6438275382588823897)
33+
// gdbr-check:$3 = generic_tuple_style_enum::Regular<i16, i32, i64>::Case3(0, 6438275382588823897)
3334

3435
// gdb-command:print univariant
35-
// gdbg-check:$4 = {{__0 = -1}}
3636
// gdbr-check:$4 = generic_tuple_style_enum::Univariant<i64>::TheOnlyCase(-1)
3737

3838

@@ -41,20 +41,16 @@
4141
// lldb-command:run
4242

4343
// lldb-command:print case1
44-
// lldbg-check:[...]$0 = Case1(0, 31868, 31868, 31868, 31868)
4544
// lldbr-check:(generic_tuple_style_enum::Regular<u16, u32, u64>::Case1) case1 = { = 0 = 31868 = 31868 = 31868 = 31868 }
4645

4746
// lldb-command:print case2
48-
// lldbg-check:[...]$1 = Case2(0, 286331153, 286331153)
49-
// lldbr-check:(generic_tuple_style_enum::Regular<i16, i32, i64>::Case2) case2 = Regular<i16, i32, i64>::Case2 { generic_tuple_style_enum::Regular<i16, i32, i64>::Case1: 0, generic_tuple_style_enum::Regular<i16, i32, i64>::Case2: 286331153, generic_tuple_style_enum::Regular<i16, i32, i64>::Case3: 286331153 }
47+
// lldbr-check:(generic_tuple_style_enum::Regular<i16, i32, i64>::Case2) case2 = Regular<i16, i32, i64>::Case2 { Case1: 0, Case2: 286331153, Case3: 286331153 }
5048

5149
// lldb-command:print case3
52-
// lldbg-check:[...]$2 = Case3(0, 6438275382588823897)
53-
// lldbr-check:(generic_tuple_style_enum::Regular<i16, i32, i64>::Case3) case3 = Regular<i16, i32, i64>::Case3 { generic_tuple_style_enum::Regular<i16, i32, i64>::Case1: 0, generic_tuple_style_enum::Regular<i16, i32, i64>::Case2: 6438275382588823897 }
50+
// lldbr-check:(generic_tuple_style_enum::Regular<i16, i32, i64>::Case3) case3 = Regular<i16, i32, i64>::Case3 { Case1: 0, Case2: 6438275382588823897 }
5451

5552
// lldb-command:print univariant
56-
// lldbg-check:[...]$3 = TheOnlyCase(-1)
57-
// lldbr-check:(generic_tuple_style_enum::Univariant<i64>) univariant = { generic_tuple_style_enum::TheOnlyCase = { = -1 } }
53+
// lldbr-check:(generic_tuple_style_enum::Univariant<i64>) univariant = { TheOnlyCase = { = -1 } }
5854

5955
#![feature(omit_gdb_pretty_printer_section)]
6056
#![omit_gdb_pretty_printer_section]

‎src/test/debuginfo/method-on-tuple-struct.rs

+5-5
Original file line numberDiff line numberDiff line change
@@ -74,7 +74,7 @@
7474
// STACK BY REF
7575
// lldb-command:print *self
7676
// lldbg-check:[...]$0 = TupleStruct(100, -100.5)
77-
// lldbr-check:(method_on_tuple_struct::TupleStruct) *self = { = 100 = -100.5 }
77+
// lldbr-check:(method_on_tuple_struct::TupleStruct) *self = TupleStruct(100, -100.5)
7878
// lldb-command:print arg1
7979
// lldbg-check:[...]$1 = -1
8080
// lldbr-check:(isize) arg1 = -1
@@ -86,7 +86,7 @@
8686
// STACK BY VAL
8787
// lldb-command:print self
8888
// lldbg-check:[...]$3 = TupleStruct(100, -100.5)
89-
// lldbr-check:(method_on_tuple_struct::TupleStruct) self = { = 100 = -100.5 }
89+
// lldbr-check:(method_on_tuple_struct::TupleStruct) self = TupleStruct(100, -100.5)
9090
// lldb-command:print arg1
9191
// lldbg-check:[...]$4 = -3
9292
// lldbr-check:(isize) arg1 = -3
@@ -98,7 +98,7 @@
9898
// OWNED BY REF
9999
// lldb-command:print *self
100100
// lldbg-check:[...]$6 = TupleStruct(200, -200.5)
101-
// lldbr-check:(method_on_tuple_struct::TupleStruct) *self = { = 200 = -200.5 }
101+
// lldbr-check:(method_on_tuple_struct::TupleStruct) *self = TupleStruct(200, -200.5)
102102
// lldb-command:print arg1
103103
// lldbg-check:[...]$7 = -5
104104
// lldbr-check:(isize) arg1 = -5
@@ -110,7 +110,7 @@
110110
// OWNED BY VAL
111111
// lldb-command:print self
112112
// lldbg-check:[...]$9 = TupleStruct(200, -200.5)
113-
// lldbr-check:(method_on_tuple_struct::TupleStruct) self = { = 200 = -200.5 }
113+
// lldbr-check:(method_on_tuple_struct::TupleStruct) self = TupleStruct(200, -200.5)
114114
// lldb-command:print arg1
115115
// lldbg-check:[...]$10 = -7
116116
// lldbr-check:(isize) arg1 = -7
@@ -122,7 +122,7 @@
122122
// OWNED MOVED
123123
// lldb-command:print *self
124124
// lldbg-check:[...]$12 = TupleStruct(200, -200.5)
125-
// lldbr-check:(method_on_tuple_struct::TupleStruct) *self = { = 200 = -200.5 }
125+
// lldbr-check:(method_on_tuple_struct::TupleStruct) *self = TupleStruct(200, -200.5)
126126
// lldb-command:print arg1
127127
// lldbg-check:[...]$13 = -9
128128
// lldbr-check:(isize) arg1 = -9

‎src/test/debuginfo/nil-enum.rs

+9-4
Original file line numberDiff line numberDiff line change
@@ -14,16 +14,21 @@
1414
// ignore-lldb
1515

1616

17+
// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
18+
// gdb 8.2.0 crashes on this test case, see
19+
// https://sourceware.org/bugzilla/show_bug.cgi?id=23626
20+
// This will be fixed in the next release, which will be >= 8.2.1.
21+
// min-system-llvm-version: 7.0
22+
// min-gdb-version: 8.2.1
23+
1724
// compile-flags:-g
1825
// gdb-command:run
1926

2027
// gdb-command:print first
21-
// gdbg-check:$1 = {<No data fields>}
22-
// gdbr-check:$1 = <error reading variable>
28+
// gdbr-check:$1 = nil_enum::ANilEnum {<No data fields>}
2329

2430
// gdb-command:print second
25-
// gdbg-check:$2 = {<No data fields>}
26-
// gdbr-check:$2 = <error reading variable>
31+
// gdbr-check:$2 = nil_enum::AnotherNilEnum {<No data fields>}
2732

2833
#![allow(unused_variables)]
2934
#![feature(omit_gdb_pretty_printer_section)]

‎src/test/debuginfo/recursive-struct.rs

+4-15
Original file line numberDiff line numberDiff line change
@@ -10,74 +10,63 @@
1010

1111
// ignore-tidy-linelength
1212
// ignore-lldb
13-
// ignore-gdb-version: 7.11.90 - 7.12.9
13+
14+
// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
15+
// min-system-llvm-version: 7.0
16+
// min-gdb-version: 8.2
1417

1518
// compile-flags:-g
1619

1720
// gdb-command:run
1821

1922
// gdb-command:print stack_unique.value
2023
// gdb-check:$1 = 0
21-
// gdbg-command:print stack_unique.next.RUST$ENCODED$ENUM$0$Empty.val->value
2224
// gdbr-command:print stack_unique.next.val.value
2325
// gdb-check:$2 = 1
2426

25-
// gdbg-command:print unique_unique->value
2627
// gdbr-command:print unique_unique.value
2728
// gdb-check:$3 = 2
28-
// gdbg-command:print unique_unique->next.RUST$ENCODED$ENUM$0$Empty.val->value
2929
// gdbr-command:print unique_unique.next.val.value
3030
// gdb-check:$4 = 3
3131

3232
// gdb-command:print vec_unique[0].value
3333
// gdb-check:$5 = 6.5
34-
// gdbg-command:print vec_unique[0].next.RUST$ENCODED$ENUM$0$Empty.val->value
3534
// gdbr-command:print vec_unique[0].next.val.value
3635
// gdb-check:$6 = 7.5
3736

38-
// gdbg-command:print borrowed_unique->value
3937
// gdbr-command:print borrowed_unique.value
4038
// gdb-check:$7 = 8.5
41-
// gdbg-command:print borrowed_unique->next.RUST$ENCODED$ENUM$0$Empty.val->value
4239
// gdbr-command:print borrowed_unique.next.val.value
4340
// gdb-check:$8 = 9.5
4441

4542
// LONG CYCLE
4643
// gdb-command:print long_cycle1.value
4744
// gdb-check:$9 = 20
48-
// gdbg-command:print long_cycle1.next->value
4945
// gdbr-command:print long_cycle1.next.value
5046
// gdb-check:$10 = 21
51-
// gdbg-command:print long_cycle1.next->next->value
5247
// gdbr-command:print long_cycle1.next.next.value
5348
// gdb-check:$11 = 22
54-
// gdbg-command:print long_cycle1.next->next->next->value
5549
// gdbr-command:print long_cycle1.next.next.next.value
5650
// gdb-check:$12 = 23
5751

5852
// gdb-command:print long_cycle2.value
5953
// gdb-check:$13 = 24
60-
// gdbg-command:print long_cycle2.next->value
6154
// gdbr-command:print long_cycle2.next.value
6255
// gdb-check:$14 = 25
63-
// gdbg-command:print long_cycle2.next->next->value
6456
// gdbr-command:print long_cycle2.next.next.value
6557
// gdb-check:$15 = 26
6658

6759
// gdb-command:print long_cycle3.value
6860
// gdb-check:$16 = 27
69-
// gdbg-command:print long_cycle3.next->value
7061
// gdbr-command:print long_cycle3.next.value
7162
// gdb-check:$17 = 28
7263

7364
// gdb-command:print long_cycle4.value
7465
// gdb-check:$18 = 29.5
7566

76-
// gdbg-command:print (*****long_cycle_w_anonymous_types).value
7767
// gdbr-command:print long_cycle_w_anonymous_types.value
7868
// gdb-check:$19 = 30
7969

80-
// gdbg-command:print (*****((*****long_cycle_w_anonymous_types).next.RUST$ENCODED$ENUM$0$Empty.val)).value
8170
// gdbr-command:print long_cycle_w_anonymous_types.next.val.value
8271
// gdb-check:$20 = 31
8372

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