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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/inference/cannot-infer-closure-circular.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/inference/cannot-infer-closure-circular.rs')
-rw-r--r-- | src/test/ui/inference/cannot-infer-closure-circular.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/inference/cannot-infer-closure-circular.rs b/src/test/ui/inference/cannot-infer-closure-circular.rs new file mode 100644 index 000000000..affb48149 --- /dev/null +++ b/src/test/ui/inference/cannot-infer-closure-circular.rs @@ -0,0 +1,13 @@ +fn main() { + // Below we call the closure with its own return as the argument, unifying + // its inferred input and return types. We want to make sure that the generated + // error handles this gracefully, and in particular doesn't generate an extra + // note about the `?` operator in the closure body, which isn't relevant to + // the inference. + let x = |r| { //~ ERROR type annotations needed for `Result<(), E>` + let v = r?; + Ok(v) + }; + + let _ = x(x(Ok(()))); +} |