Rollup merge of rust-lang#138315 - matthiaskrgr:nextback, r=fmease

jieyouxu · web-flow · commit 1cf279e44591 · 2025-03-11T08:06:12.000+08:00
use next_back() instead of last() on DoubleEndedIterator
diff --git a/compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs b/compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs
@@ -1520,7 +1520,7 @@ fn generics_args_err_extend<'a>(
                 })
                 .collect();
             if args.len() > 1
-                && let Some(span) = args.into_iter().last()
+                && let Some(span) = args.into_iter().next_back()
             {
                 err.note(
                     "generic arguments are not allowed on both an enum and its variant's path \
diff --git a/compiler/rustc_parse/src/parser/diagnostics.rs b/compiler/rustc_parse/src/parser/diagnostics.rs
@@ -2107,7 +2107,7 @@ impl<'a> Parser<'a> {
                     ast::GenericBound::Trait(poly) => Some(poly),
                     _ => None,
                 })
-                .last()
+                .next_back()
         {
             err.span_suggestion_verbose(
                 poly.span.shrink_to_hi(),

Original file line number	Diff line number	Diff line change
`@@ -1520,7 +1520,7 @@ fn generics_args_err_extend<'a>(`
`1520`	`1520`	`})`
`1521`	`1521`	`.collect();`
`1522`	`1522`	`if args.len() > 1`
`1523`		`- && let Some(span) = args.into_iter().last()`
	`1523`	`+ && let Some(span) = args.into_iter().next_back()`
`1524`	`1524`	`{`
`1525`	`1525`	`err.note(`
`1526`	`1526`	`"generic arguments are not allowed on both an enum and its variant's path \`
Original file line number	Diff line number	Diff line change
`@@ -2107,7 +2107,7 @@ impl<'a> Parser<'a> {`
`2107`	`2107`	`ast::GenericBound::Trait(poly) => Some(poly),`
`2108`	`2108`	`_ => None,`
`2109`	`2109`	`})`
`2110`		`- .last()`
	`2110`	`+ .next_back()`
`2111`	`2111`	`{`
`2112`	`2112`	`err.span_suggestion_verbose(`
`2113`	`2113`	`poly.span.shrink_to_hi(),`