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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-34349.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-34349.rs b/src/test/ui/issues/issue-34349.rs new file mode 100644 index 000000000..d86180261 --- /dev/null +++ b/src/test/ui/issues/issue-34349.rs @@ -0,0 +1,22 @@ +// This is a regression test for a problem encountered around upvar +// inference and trait caching: in particular, we were entering a +// temporary closure kind during inference, and then caching results +// based on that temporary kind, which led to no error being reported +// in this particular test. + +fn main() { + let inc = || {}; + inc(); + + fn apply<F>(f: F) where F: Fn() { + f() + } + + let mut farewell = "goodbye".to_owned(); + let diary = || { //~ ERROR E0525 + farewell.push_str("!!!"); + println!("Then I screamed {}.", farewell); + }; + + apply(diary); +} |