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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.rs')
-rw-r--r-- | tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.rs b/tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.rs new file mode 100644 index 000000000..25c2dbe19 --- /dev/null +++ b/tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.rs @@ -0,0 +1,29 @@ +// Various unsuccessful attempts to put the unboxed closure kind +// inference into an awkward position that might require fixed point +// iteration (basically where inferring the kind of a closure `c` +// would require knowing the kind of `c`). I currently believe this is +// impossible. + +fn a() { + let mut closure0 = None; + //~^ ERROR type annotations needed + let vec = vec![1, 2, 3]; + + loop { + { + let closure1 = || { + match closure0.take() { + Some(c) => { + return c(); + } + None => { } + } + }; + closure1(); + } + + closure0 = || vec; + } +} + +fn main() { } |