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Name the captured upvars for closures/generators in debuginfo

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Previously, debuggers print closures as something like
```
y::main::closure-0 (0x7fffffffdd34)
```
The pointer actually references to an upvar. It is not
very obvious, especially for beginners.

It's because upvars don't have names before, as they
are packed into a tuple. This commit names the upvars,
so we can expect to see something like
```
y::main::closure-0 {_captured_ref__b: 0x[...]}
```
This commit is contained in:
lrh2000 2021-05-05 23:50:44 +08:00
parent 95fb131521
commit 29856acffe
5 changed files with 165 additions and 8 deletions
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8
src/test/debuginfo/generator-objects.rs
View file

@ -11,16 +11,16 @@
// gdb-command:run
// gdb-command:print b
// gdb-check:$1 = generator_objects::main::{generator#0}::Unresumed(0x[...])
// gdb-check:$1 = generator_objects::main::{generator#0}::Unresumed{_captured_ref__a: 0x[...]}
// gdb-command:continue
// gdb-command:print b
// gdb-check:$2 = generator_objects::main::{generator#0}::Suspend0{c: 6, d: 7, __0: 0x[...]}
// gdb-check:$2 = generator_objects::main::{generator#0}::Suspend0{c: 6, d: 7, _captured_ref__a: 0x[...]}
// gdb-command:continue
// gdb-command:print b
// gdb-check:$3 = generator_objects::main::{generator#0}::Suspend1{c: 7, d: 8, __0: 0x[...]}
// gdb-check:$3 = generator_objects::main::{generator#0}::Suspend1{c: 7, d: 8, _captured_ref__a: 0x[...]}
// gdb-command:continue
// gdb-command:print b
// gdb-check:$4 = generator_objects::main::{generator#0}::Returned(0x[...])
// gdb-check:$4 = generator_objects::main::{generator#0}::Returned{_captured_ref__a: 0x[...]}
// === LLDB TESTS ==================================================================================