user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

[debuginfo] Make debuginfo type names for slices and str consistent.

Browse source 
Before this PR, the compiler would emit the debuginfo name `slice$<T>`
for all kinds of slices, regardless of whether they are behind a
reference or not and regardless of the kind of reference. As a
consequence, the types `Foo<&[T]>`, `Foo<[T]>`, and `Foo<&mut [T]>`
would end up with the same type name `Foo<slice$<T> >` in debuginfo,
making it impossible to disambiguate between them by name. Similarly,
`&str` would get the name `str` in debuginfo, so the debuginfo name for
`Foo<str>` and `Foo<&str>` would be the same. In contrast,
`*const [bool]` and `*mut [bool]` would be `ptr_const$<slice$<bool> >`
and `ptr_mut$<slice$<bool> >`, i.e. the encoding does not lose
information about the type.

This PR removes all special handling for slices and `str`. The types
`&[bool]`, `&mut [bool]`, and `&str` thus get the names
`ref$<slice2$<bool> >`, `ref_mut$<slice2$<bool> >`, and
`ref$<str$>` respectively -- as one would expect.
This commit is contained in:
Michael Woerister 2022-10-25 12:28:03 +02:00
parent 1481fd964b
commit 0cd2dd7263
11 changed files with 56 additions and 48 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/test/debuginfo/basic-types.rs
View file

@ -47,7 +47,6 @@
// gdbg-check:$15 = {data_ptr = [...] "Hello, World!", length = 13}
// gdbr-check:$15 = "Hello, World!"
// === LLDB TESTS ==================================================================================
// lldb-command:run
@ -96,7 +95,6 @@
// lldbg-check:[...]$12 = 3.5
// lldbr-check:(f64) f64 = 3.5
// === CDB TESTS ===================================================================================
// cdb-command:g
@ -131,7 +129,7 @@
// cdb-command:.enable_unicode 1
// FIXME(#88840): The latest version of the Windows SDK broke the visualizer for str.
// cdb-command:dx s
// cdb-check:s : [...] [Type: str]
// cdb-check:s : [...] [Type: ref$<str$>]
#![allow(unused_variables)]
#![feature(omit_gdb_pretty_printer_section)]
@ -156,4 +154,6 @@ fn main() {
_zzz(); // #break
}
fn _zzz() {()}
fn _zzz() {
()
}

6
src/test/debuginfo/msvc-pretty-enums.rs
View file

@ -116,13 +116,13 @@
// cdb-check: niche_w_fields_3_niche5,d : F [Type: enum2$<msvc_pretty_enums::NicheLayoutWithFields3>]
// cdb-command: dx -r3 niche_w_fields_std_result_ok,d
// cdb-check: niche_w_fields_std_result_ok,d : Ok [Type: enum2$<core::result::Result<alloc::boxed::Box<slice$<u8>,alloc::alloc::Global>,u64> >]
// cdb-check: [+0x[...]] __0 [Type: alloc::boxed::Box<slice$<u8>,alloc::alloc::Global>]
// cdb-check: niche_w_fields_std_result_ok,d : Ok [Type: enum2$<core::result::Result<alloc::boxed::Box<slice2$<u8>,alloc::alloc::Global>,u64> >]
// cdb-check: [+0x[...]] __0 [Type: alloc::boxed::Box<slice2$<u8>,alloc::alloc::Global>]
// cdb-check: [+0x[...]] data_ptr : [...]
// cdb-check: [+0x[...]] length : 3 [...]
// cdb-command: dx -r3 niche_w_fields_std_result_err,d
// cdb-check: niche_w_fields_std_result_err,d : Err [Type: enum2$<core::result::Result<alloc::boxed::Box<slice$<u8>,alloc::alloc::Global>,u64> >]
// cdb-check: niche_w_fields_std_result_err,d : Err [Type: enum2$<core::result::Result<alloc::boxed::Box<slice2$<u8>,alloc::alloc::Global>,u64> >]
// cdb-check: [+0x[...]] __0 : 789 [Type: unsigned __int64]
// cdb-command: dx -r2 arbitrary_discr1,d

4
src/test/debuginfo/msvc-scalarpair-params.rs
View file

@ -38,14 +38,14 @@
// cdb-command: g
// cdb-command: dx s
// cdb-check:s : "this is a static str" [Type: str]
// cdb-check:s : "this is a static str" [Type: ref$<str$>]
// cdb-check: [len] : 0x14 [Type: unsigned [...]]
// cdb-check: [chars]
// cdb-command: g
// cdb-command: dx s
// cdb-check:s : { len=0x5 } [Type: slice$<u8>]
// cdb-check:s : { len=0x5 } [Type: ref$<slice2$<u8> >]
// cdb-check: [len] : 0x5 [Type: unsigned [...]]
// cdb-check: [0] : 0x1 [Type: unsigned char]
// cdb-check: [1] : 0x2 [Type: unsigned char]

4
src/test/debuginfo/pretty-std.rs
View file

@ -69,7 +69,7 @@
// cdb-command: g
// cdb-command: dx slice,d
// cdb-check:slice,d : { len=4 } [Type: slice$<i32>]
// cdb-check:slice,d : { len=4 } [Type: ref$<slice2$<i32> >]
// cdb-check: [len] : 4 [Type: [...]]
// cdb-check: [0] : 0 [Type: int]
// cdb-check: [1] : 1 [Type: int]
@ -86,7 +86,7 @@
// cdb-check: [3] : 7 [Type: unsigned __int64]
// cdb-command: dx str_slice
// cdb-check:str_slice : "IAMA string slice!" [Type: str]
// cdb-check:str_slice : "IAMA string slice!" [Type: ref$<str$>]
// cdb-command: dx string
// cdb-check:string : "IAMA string!" [Type: [...]::String]

8
src/test/debuginfo/rc_arc.rs
View file

@ -57,7 +57,7 @@
// cdb-check: [Weak reference count] : 2 [Type: core::cell::Cell<usize>]
// cdb-command:dx slice_rc,d
// cdb-check:slice_rc,d : { len=3 } [Type: alloc::rc::Rc<slice$<u32> >]
// cdb-check:slice_rc,d : { len=3 } [Type: alloc::rc::Rc<slice2$<u32> >]
// cdb-check: [Length] : 3 [Type: [...]]
// cdb-check: [Reference count] : 41 [Type: core::cell::Cell<usize>]
// cdb-check: [Weak reference count] : 2 [Type: core::cell::Cell<usize>]
@ -66,7 +66,7 @@
// cdb-check: [2] : 3 [Type: u32]
// cdb-command:dx slice_rc_weak,d
// cdb-check:slice_rc_weak,d : { len=3 } [Type: alloc::rc::Weak<slice$<u32> >]
// cdb-check:slice_rc_weak,d : { len=3 } [Type: alloc::rc::Weak<slice2$<u32> >]
// cdb-check: [Length] : 3 [Type: [...]]
// cdb-check: [Reference count] : 41 [Type: core::cell::Cell<usize>]
// cdb-check: [Weak reference count] : 2 [Type: core::cell::Cell<usize>]
@ -85,7 +85,7 @@
// cdb-check: [Weak reference count] : 2 [Type: core::sync::atomic::AtomicUsize]
// cdb-command:dx slice_arc,d
// cdb-check:slice_arc,d : { len=3 } [Type: alloc::sync::Arc<slice$<u32> >]
// cdb-check:slice_arc,d : { len=3 } [Type: alloc::sync::Arc<slice2$<u32> >]
// cdb-check: [Length] : 3 [Type: [...]]
// cdb-check: [Reference count] : 61 [Type: core::sync::atomic::AtomicUsize]
// cdb-check: [Weak reference count] : 2 [Type: core::sync::atomic::AtomicUsize]
@ -94,7 +94,7 @@
// cdb-check: [2] : 6 [Type: u32]
// cdb-command:dx slice_arc_weak,d
// cdb-check:slice_arc_weak,d : { len=3 } [Type: alloc::sync::Weak<slice$<u32> >]
// cdb-check:slice_arc_weak,d : { len=3 } [Type: alloc::sync::Weak<slice2$<u32> >]
// cdb-check: [Length] : 3 [Type: [...]]
// cdb-check: [Reference count] : 61 [Type: core::sync::atomic::AtomicUsize]
// cdb-check: [Weak reference count] : 2 [Type: core::sync::atomic::AtomicUsize]

6
src/test/debuginfo/result-types.rs
View file

@ -7,12 +7,12 @@
// cdb-command: g
// cdb-command: dx x,d
// cdb-check:x,d : Ok [Type: enum2$<core::result::Result<i32,str> >]
// cdb-check:x,d : Ok [Type: enum2$<core::result::Result<i32,ref$<str$> > >]
// cdb-check: [...] __0 : -3 [Type: int]
// cdb-command: dx y
// cdb-check:y : Err [Type: enum2$<core::result::Result<i32,str> >]
// cdb-check: [...] __0 : "Some error message" [Type: str]
// cdb-check:y : Err [Type: enum2$<core::result::Result<i32,ref$<str$> > >]
// cdb-check: [...] __0 : "Some error message" [Type: ref$<str$>]
fn main() {
let x: Result<i32, &str> = Ok(-3);

10
src/test/debuginfo/type-names.rs
View file

@ -95,7 +95,7 @@
// gdb-check:type = &[usize]
// gdb-command:whatis slice2
// gdb-check:type = &[type_names::mod1::Enum2]
// gdb-check:type = &mut [type_names::mod1::Enum2]
// TRAITS
// gdb-command:whatis box_trait
@ -218,8 +218,8 @@
// cdb-check:struct alloc::vec::Vec<usize,alloc::alloc::Global> vec1 = [...]
// cdb-check:struct alloc::vec::Vec<enum2$<type_names::mod1::Enum2>,alloc::alloc::Global> vec2 = [...]
// cdb-command:dv /t slice*
// cdb-check:struct slice$<usize> slice1 = [...]
// cdb-check:struct slice$<enum2$<type_names::mod1::Enum2> > slice2 = [...]
// cdb-check:struct ref$<slice2$<usize> > slice1 = [...]
// cdb-check:struct ref_mut$<slice2$<enum2$<type_names::mod1::Enum2> > > slice2 = [...]
// TRAITS
// cdb-command:dv /t *_trait
@ -417,8 +417,8 @@ fn main() {
let vec1 = vec![0_usize, 2, 3];
let slice1 = &*vec1;
let vec2 = vec![mod1::Enum2::Variant2(Struct1)];
let slice2 = &*vec2;
let mut vec2 = vec![mod1::Enum2::Variant2(Struct1)];
let slice2 = &mut *vec2;
// Trait Objects
let box_trait = Box::new(0_isize) as Box<dyn Trait1>;

12
src/test/debuginfo/unsized.rs
View file

@ -32,13 +32,13 @@
// cdb-command: g
// cdb-command:dx a
// cdb-check:a [Type: ref$<unsized::Foo<slice$<u8> > >]
// cdb-check: [+0x000] data_ptr : 0x[...] [Type: unsized::Foo<slice$<u8> > *]
// cdb-check:a [Type: ref$<unsized::Foo<slice2$<u8> > >]
// cdb-check: [+0x000] data_ptr : 0x[...] [Type: unsized::Foo<slice2$<u8> > *]
// cdb-check: [...] length : 0x4 [Type: unsigned [...]int[...]
// cdb-command:dx b
// cdb-check:b [Type: ref$<unsized::Foo<unsized::Foo<slice$<u8> > > >]
// cdb-check: [+0x000] data_ptr : 0x[...] [Type: unsized::Foo<unsized::Foo<slice$<u8> > > *]
// cdb-check:b [Type: ref$<unsized::Foo<unsized::Foo<slice2$<u8> > > >]
// cdb-check: [+0x000] data_ptr : 0x[...] [Type: unsized::Foo<unsized::Foo<slice2$<u8> > > *]
// cdb-check: [...] length : 0x4 [Type: unsigned [...]int[...]
// cdb-command:dx c
@ -53,8 +53,8 @@
// cdb-check:[...] vtable : 0x[...] [Type: unsigned [...]int[...] (*)[3]]
// cdb-command:dx tuple_slice
// cdb-check:tuple_slice [Type: ref$<tuple$<i32,i32,slice$<i32> > >]
// cdb-check: [+0x000] data_ptr : 0x[...] [Type: tuple$<i32,i32,slice$<i32> > *]
// cdb-check:tuple_slice [Type: ref$<tuple$<i32,i32,slice2$<i32> > >]
// cdb-check: [+0x000] data_ptr : 0x[...] [Type: tuple$<i32,i32,slice2$<i32> > *]
// cdb-check: [...] length : 0x2 [Type: unsigned [...]int[...]
// cdb-command:dx tuple_dyn