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authorStefan Lankes <stlankes@users.noreply.github.com>2019-10-20 10:48:58 +0200
committerGitHub <noreply@github.com>2019-10-20 10:48:58 +0200
commitb6801b7dcd56a272dda2fbd88ecbc5b1476d8b83 (patch)
treec77cecd79f214f1a3a5cbdee0dd8eb934ea86c3b /src/test/ui/empty/empty-never-array.stderr
parent5ebd4d9c27bf8fee4f7d664d76c41832745dff43 (diff)
parente66a6282275802fcb0a29ba58ddc445fc64ac8ef (diff)
downloadrust-b6801b7dcd56a272dda2fbd88ecbc5b1476d8b83.tar.gz
rust-b6801b7dcd56a272dda2fbd88ecbc5b1476d8b83.zip
Merge branch 'master' into rusty-hermit
Diffstat (limited to 'src/test/ui/empty/empty-never-array.stderr')
-rw-r--r--src/test/ui/empty/empty-never-array.stderr7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/test/ui/empty/empty-never-array.stderr b/src/test/ui/empty/empty-never-array.stderr
index 7d59d553d88..d865b59f0b9 100644
--- a/src/test/ui/empty/empty-never-array.stderr
+++ b/src/test/ui/empty/empty-never-array.stderr
@@ -11,6 +11,13 @@ LL | | }
 ...
 LL |       let Helper::U(u) = Helper::T(t, []);
    |           ^^^^^^^^^^^^ pattern `T(_, _)` not covered
+   |
+   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
+help: you might want to use `if let` to ignore the variant that isn't matched
+   |
+LL |     if let Helper::U(u) = Helper::T(t, []) { /* */ }
+   |
 
 error[E0381]: use of possibly-uninitialized variable: `u`
   --> $DIR/empty-never-array.rs:12:5