e9270e3cba
When writing something like the expression `|_: ...| {}`, we now detect the `...` during parsing explicitly instead of relying on the detection in `parse_ty_common` so that we don't talk about "nested `...` are not supported".
```
error: unexpected `...`
--> $DIR/no-closure.rs:6:35
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LL | const F: extern "C" fn(...) = |_: ...| {};
| ^^^
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= note: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list
```
21 lines
646 B
Rust
21 lines
646 B
Rust
#![feature(c_variadic)]
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#![crate_type = "lib"]
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// Check that `...` in closures is rejected.
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const F: extern "C" fn(...) = |_: ...| {};
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//~^ ERROR: unexpected `...`
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//~| NOTE: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list
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fn foo() {
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let f = |...| {};
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//~^ ERROR: unexpected `...`
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//~| NOTE: not a valid pattern
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//~| NOTE: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list
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let f = |_: ...| {};
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//~^ ERROR: unexpected `...`
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//~| NOTE: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list
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f(1i64)
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}
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