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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/suggestions/issue-86100-tuple-paren-comma.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/suggestions/issue-86100-tuple-paren-comma.rs')
-rw-r--r-- | src/test/ui/suggestions/issue-86100-tuple-paren-comma.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/suggestions/issue-86100-tuple-paren-comma.rs b/src/test/ui/suggestions/issue-86100-tuple-paren-comma.rs new file mode 100644 index 000000000..fa9d1a889 --- /dev/null +++ b/src/test/ui/suggestions/issue-86100-tuple-paren-comma.rs @@ -0,0 +1,25 @@ +// Tests that a suggestion is issued for type mismatch errors when a +// 1-tuple is expected and a parenthesized expression of non-tuple +// type is supplied. + +fn foo<T>(_t: (T,)) {} +struct S { _s: (String,) } + +fn main() { + let _x: (i32,) = (5); + //~^ ERROR: mismatched types [E0308] + //~| HELP: use a trailing comma to create a tuple with one element + + foo((Some(3))); + //~^ ERROR: mismatched types [E0308] + //~| HELP: use a trailing comma to create a tuple with one element + + let _s = S { _s: ("abc".to_string()) }; + //~^ ERROR: mismatched types [E0308] + //~| HELP: use a trailing comma to create a tuple with one element + + // Do not issue the suggestion if the found type is already a tuple. + let t = (1, 2); + let _x: (i32,) = (t); + //~^ ERROR: mismatched types [E0308] +} |