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Auto merge of #62816 - estebank:type-ascription-macros, r=petrochenkov

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Point at type ascription before macro invocation on expansion parse error

Fix https://github.com/rust-lang/rust/issues/47666. Follow up to https://github.com/rust-lang/rust/pull/62791.

r? @petrochenkov
This commit is contained in:
bors 2019-08-04 16:19:04 +00:00
commit f01b9f803b
9 changed files with 57 additions and 13 deletions
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11
src/test/ui/type/ascription/issue-47666.stderr
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@ -2,11 +2,14 @@ error: expected type, found reserved keyword `box`
--> $DIR/issue-47666.rs:2:25
|
LL | let _ = Option:Some(vec![0, 1]);
| ^^^^^^^^^^
| |
| expected type
| in this macro invocation
| - ^^^^^^^^^^
| | |
| | expected type
| | in this macro invocation
| help: maybe write a path separator here: `::`
|
= note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
= note: for more information, see https://github.com/rust-lang/rust/issues/23416
= note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
error: aborting due to previous error