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Rollup merge of rust-lang#101801 - SparrowLii:query_depth_note, r=est…
…ebank add note for `layout_of` when query depth overflows Fixes rust-lang#101747 Added `try_find_layout_root` function to add a note for `layout_of` when query depth overflows. This would make the error in rust-lang#101747 look like this: ``` error: queries overflow the depth limit! | note: Query depth increased by 66 when computing layout of `core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<alloc::boxed::Box<alloc::string::String>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>`! --> D:\rust-backup\parallel_rust\query_depth.rs:40:1 | 40 | fn main() { | ^^^^^^^^^ error: aborting due to previous error ``` cc `@semicoleon`
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,31 @@ | ||
// build-fail | ||
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#![recursion_limit = "64"] | ||
type Byte = Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Option<Option<Option<Option< Option<Option<Option<Option< | ||
Box<String> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>> | ||
>>>> >>>>; | ||
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fn main() { | ||
//~^ ERROR: queries overflow the depth limit! | ||
println!("{}", std::mem::size_of::<Byte>()); | ||
} |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,11 @@ | ||
error: queries overflow the depth limit! | ||
--> $DIR/query_depth.rs:28:1 | ||
| | ||
LL | fn main() { | ||
| ^^^^^^^^^ | ||
| | ||
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "128"]` attribute to your crate (`query_depth`) | ||
= note: query depth increased by 66 when computing layout of `core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<core::option::Option<alloc::boxed::Box<alloc::string::String>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>` | ||
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error: aborting due to previous error | ||
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