1 // This test checks the debuginfo for the expected 3 vtables is generated for correct names and number
2 // of entries.
3
4 // Use the v0 symbol mangling scheme to codegen order independent of rustc version.
5 // Unnamed items like shims are generated in lexicographical order of their symbol name and in the
6 // legacy mangling scheme rustc version and generic parameters are both hashed into a single part
7 // of the name, thus randomizing item order with respect to rustc version.
8
9 // compile-flags: -Cdebuginfo=2 -Copt-level=0 -Csymbol-mangling-version=v0
10 // ignore-tidy-linelength
11
12 // Make sure that vtables don't have the unnamed_addr attribute when debuginfo is enabled.
13 // This helps debuggers more reliably map from dyn pointer to concrete type.
14 // CHECK: @vtable.2 = private constant <{
15 // CHECK: @vtable.3 = private constant <{
16 // CHECK: @vtable.4 = private constant <{
17
18 // NONMSVC: ![[USIZE:[0-9]+]] = !DIBasicType(name: "usize"
19 // MSVC: ![[USIZE:[0-9]+]] = !DIDerivedType(tag: DW_TAG_typedef, name: "usize"
20 // NONMSVC: ![[PTR:[0-9]+]] = !DIDerivedType(tag: DW_TAG_pointer_type, name: "*const ()"
21 // MSVC: ![[PTR:[0-9]+]] = !DIDerivedType(tag: DW_TAG_pointer_type, name: "ptr_const$<tuple$<> >"
22
23 // NONMSVC: !DIGlobalVariable(name: "<debug_vtable::Foo as debug_vtable::SomeTrait>::{vtable}"
24 // MSVC: !DIGlobalVariable(name: "impl$<debug_vtable::Foo, debug_vtable::SomeTrait>::vtable$"
25
26 // NONMSVC: ![[VTABLE_TY0:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "<debug_vtable::Foo as debug_vtable::SomeTrait>::{vtable_type}", {{.*}} size: {{320|160}}, align: {{64|32}}, flags: DIFlagArtificial, {{.*}} vtableHolder: ![[FOO_TYPE:[0-9]+]],
27 // MSVC: ![[VTABLE_TY0:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "impl$<debug_vtable::Foo, debug_vtable::SomeTrait>::vtable_type$", {{.*}} size: {{320|160}}, align: {{64|32}}, flags: DIFlagArtificial, {{.*}} vtableHolder: ![[FOO_TYPE:[0-9]+]],
28 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "drop_in_place", scope: ![[VTABLE_TY0]], {{.*}} baseType: ![[PTR]], size: {{64|32}}, align: {{64|32}})
29 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "size", scope: ![[VTABLE_TY0]], {{.*}} baseType: ![[USIZE]], size: {{64|32}}, align: {{64|32}}, offset: {{64|32}})
30 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "align", scope: ![[VTABLE_TY0]], {{.*}} baseType: ![[USIZE]], size: {{64|32}}, align: {{64|32}}, offset: {{128|64}})
31 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "__method3", scope: ![[VTABLE_TY0]], {{.*}} baseType: ![[PTR]], size: {{64|32}}, align: {{64|32}}, offset: {{192|96}})
32 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "__method4", scope: ![[VTABLE_TY0]], {{.*}} baseType: ![[PTR]], size: {{64|32}}, align: {{64|32}}, offset: {{256|128}})
33 // CHECK: ![[FOO_TYPE]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Foo",
34
35 // NONMSVC: !DIGlobalVariable(name: "<debug_vtable::Foo as debug_vtable::SomeTraitWithGenerics<u64, i8>>::{vtable}"
36 // MSVC: !DIGlobalVariable(name: "impl$<debug_vtable::Foo, debug_vtable::SomeTraitWithGenerics<u64,i8> >::vtable$"
37
38 // NONMSVC: ![[VTABLE_TY1:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "<debug_vtable::Foo as debug_vtable::SomeTraitWithGenerics<u64, i8>>::{vtable_type}", {{.*}}, size: {{256|128}}, align: {{64|32}}, flags: DIFlagArtificial, {{.*}}, vtableHolder: ![[FOO_TYPE]],
39 // MSVC: ![[VTABLE_TY1:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "impl$<debug_vtable::Foo, debug_vtable::SomeTraitWithGenerics<u64,i8> >::vtable_type$", {{.*}}, size: {{256|128}}, align: {{64|32}}, flags: DIFlagArtificial, {{.*}}, vtableHolder: ![[FOO_TYPE]],
40 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "drop_in_place", scope: ![[VTABLE_TY1]], {{.*}} baseType: ![[PTR]], size: {{64|32}}, align: {{64|32}})
41 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "size", scope: ![[VTABLE_TY1]], {{.*}} baseType: ![[USIZE]], size: {{64|32}}, align: {{64|32}}, offset: {{64|32}})
42 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "align", scope: ![[VTABLE_TY1]], {{.*}} baseType: ![[USIZE]], size: {{64|32}}, align: {{64|32}}, offset: {{128|64}})
43 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "__method3", scope: ![[VTABLE_TY1]], {{.*}} baseType: ![[PTR]], size: {{64|32}}, align: {{64|32}}, offset: {{192|96}})
44
45 // NONMSVC: !DIGlobalVariable(name: "<debug_vtable::Foo as _>::{vtable}"
46 // MSVC: !DIGlobalVariable(name: "impl$<debug_vtable::Foo, _>::vtable$"
47
48 // NONMSVC: ![[VTABLE_TY2:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "<debug_vtable::Foo as _>::{vtable_type}", {{.*}}, size: {{192|96}}, align: {{64|32}}, flags: DIFlagArtificial, {{.*}}, vtableHolder: ![[FOO_TYPE]],
49 // MSVC: ![[VTABLE_TY2:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "impl$<debug_vtable::Foo, _>::vtable_type$", {{.*}}, size: {{192|96}}, align: {{64|32}}, flags: DIFlagArtificial, {{.*}}, vtableHolder: ![[FOO_TYPE]],
50 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "drop_in_place", scope: ![[VTABLE_TY2]], {{.*}}, baseType: ![[PTR]], size: {{64|32}}, align: {{64|32}})
51 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "size", scope: ![[VTABLE_TY2]], {{.*}}, baseType: ![[USIZE]], size: {{64|32}}, align: {{64|32}}, offset: {{64|32}})
52 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "align", scope: ![[VTABLE_TY2]], {{.*}}, baseType: ![[USIZE]], size: {{64|32}}, align: {{64|32}}, offset: {{128|64}})
53
54 // NONMSVC: !DIGlobalVariable(name: "<debug_vtable::bar::{closure_env#0} as core::ops::function::FnOnce<(core::option::Option<&dyn core::ops::function::Fn<(), Output=()>>)>>::{vtable}"
55 // MSVC: !DIGlobalVariable(name: "impl$<debug_vtable::bar::closure_env$0, core::ops::function::FnOnce<tuple$<enum2$<core::option::Option<ref$<dyn$<core::ops::function::Fn<tuple$<>,assoc$<Output,tuple$<> > > > > > > > > >::vtable$"
56
57 // NONMSVC: !DIGlobalVariable(name: "<debug_vtable::generic_closure::{closure_env#0}<bool> as core::ops::function::FnOnce<()>>::{vtable}"
58 // MSVC: !DIGlobalVariable(name: "impl$<debug_vtable::generic_closure::closure_env$0<bool>, core::ops::function::FnOnce<tuple$<> > >::vtable$
59
60 // NONMSVC: !DIGlobalVariable(name: "<debug_vtable::generic_closure::{closure_env#0}<u32> as core::ops::function::FnOnce<()>>::{vtable}"
61 // MSVC: !DIGlobalVariable(name: "impl$<debug_vtable::generic_closure::closure_env$0<u32>, core::ops::function::FnOnce<tuple$<> > >::vtable$
62
63 #![crate_type = "lib"]
64
65 // Force emission for debuginfo for usize and *const() early..
66 pub static mut XYZ: Option<(usize, *const ())> = None;
67
68 pub struct Foo;
69
70 pub trait SomeTrait {
method1(&self) -> u3271 fn method1(&self) -> u32;
method2(&self) -> u3272 fn method2(&self) -> u32;
73 }
74
75 impl SomeTrait for Foo {
method1(&self) -> u3276 fn method1(&self) -> u32 {
77 1
78 }
method2(&self) -> u3279 fn method2(&self) -> u32 {
80 2
81 }
82 }
83
84 pub trait SomeTraitWithGenerics<T, U> {
method1(&self) -> (T, U)85 fn method1(&self) -> (T, U);
86 }
87
88 impl SomeTraitWithGenerics<u64, i8> for Foo {
method1(&self) -> (u64, i8)89 fn method1(&self) -> (u64, i8) {
90 (1, 2)
91 }
92 }
93
foo(x: &Foo) -> (u32, (u64, i8), &dyn Send)94 pub fn foo(x: &Foo) -> (u32, (u64, i8), &dyn Send) {
95 let y: &dyn SomeTrait = x;
96 let z: &dyn SomeTraitWithGenerics<u64, i8> = x;
97 (y.method1(), z.method1(), x as &dyn Send)
98 }
99
100 // Constructing the debuginfo name for the FnOnce vtable below initially caused an ICE on MSVC
101 // because the trait type contains a late bound region that needed to be erased before the type
102 // layout for the niche enum `Option<&dyn Fn()>` could be computed.
bar() -> Box<dyn FnOnce(Option<&dyn Fn()>)>103 pub fn bar() -> Box<dyn FnOnce(Option<&dyn Fn()>)> {
104 Box::new(|_x: Option<&dyn Fn()>| {})
105 }
106
generic_closure<T: 'static>(x: T) -> Box<dyn FnOnce() -> T>107 fn generic_closure<T: 'static>(x: T) -> Box<dyn FnOnce() -> T> {
108 Box::new(move || x)
109 }
110
instantiate_generic_closures() -> (Box<dyn FnOnce() -> u32>, Box<dyn FnOnce() -> bool>)111 pub fn instantiate_generic_closures() -> (Box<dyn FnOnce() -> u32>, Box<dyn FnOnce() -> bool>) {
112 (generic_closure(1u32), generic_closure(false))
113 }
114