From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/parser/intersection-patterns.rs | 40 +++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 src/test/ui/parser/intersection-patterns.rs (limited to 'src/test/ui/parser/intersection-patterns.rs') diff --git a/src/test/ui/parser/intersection-patterns.rs b/src/test/ui/parser/intersection-patterns.rs new file mode 100644 index 000000000..a6d27aab4 --- /dev/null +++ b/src/test/ui/parser/intersection-patterns.rs @@ -0,0 +1,40 @@ +// This tests the parser recovery in `recover_intersection_pat` +// and serves as a regression test for the diagnostics issue #65400. +// +// The general idea is that for `$pat_lhs @ $pat_rhs` where +// `$pat_lhs` is not generated by `ref? mut? $ident` we want +// to suggest either switching the order or note that intersection +// patterns are not allowed. + +fn main() { + let s: Option = None; + + match s { + Some(x) @ y => {} + //~^ ERROR pattern on wrong side of `@` + //~| pattern on the left, should be on the right + //~| binding on the right, should be on the left + //~| HELP switch the order + //~| SUGGESTION y @ Some(x) + _ => {} + } + + match s { + Some(x) @ Some(y) => {} + //~^ ERROR left-hand side of `@` must be a binding + //~| interpreted as a pattern, not a binding + //~| also a pattern + //~| NOTE bindings are `x`, `mut x`, `ref x`, and `ref mut x` + _ => {} + } + + match 2 { + 1 ..= 5 @ e => {} + //~^ ERROR pattern on wrong side of `@` + //~| pattern on the left, should be on the right + //~| binding on the right, should be on the left + //~| HELP switch the order + //~| SUGGESTION e @ 1..=5 + _ => {} + } +} -- cgit v1.2.3