Rollup merge of #98276 - compiler-errors:const-format-macro, r=oli-obk

matthiaskrgr · web-flow · commit ba407e39fb7d · 2022-06-20T20:13:11.000+02:00
Mention formatting macros when encountering `ArgumentV1` method in const

Also open to just closing this if it's overkill. There are a lot of other distracting error messages around, so maybe it's not worth fixing just this one.

Fixes #93665
diff --git a/core/src/fmt/mod.rs b/core/src/fmt/mod.rs
@@ -320,6 +320,7 @@ macro_rules! arg_new {
     };
 }
 
+#[rustc_diagnostic_item = "ArgumentV1Methods"]
 impl<'a> ArgumentV1<'a> {
     #[doc(hidden)]
     #[unstable(feature = "fmt_internals", reason = "internal to format_args!", issue = "none")]

Original file line number	Diff line number	Diff line change
`@@ -320,6 +320,7 @@ macro_rules! arg_new {`
`320`	`320`	`};`
`321`	`321`	`}`
`322`	`322`
	`323`	`+#[rustc_diagnostic_item = "ArgumentV1Methods"]`
`323`	`324`	`impl<'a> ArgumentV1<'a> {`
`324`	`325`	`#[doc(hidden)]`
`325`	`326`	`#[unstable(feature = "fmt_internals", reason = "internal to format_args!", issue = "none")]`