mirror of https://github.com/rust-lang/rust
21 lines
607 B
Rust
21 lines
607 B
Rust
// Regression test for #47244: in this specific scenario, when the
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// expected type indicated 1 argument but the closure takes two, we
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// would (early on) create type variables for the type of `b`. If the
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// user then attempts to invoke a method on `b`, we would get an error
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// saying that the type of `b` must be known, which was not very
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// helpful.
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//@ run-rustfix
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use std::collections::HashMap;
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fn main() {
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let mut m = HashMap::new();
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m.insert("foo", "bar");
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let _n = m.iter().map(|_, b| {
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//~^ ERROR closure is expected to take a single 2-tuple
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b.to_string()
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});
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}
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