mirror of https://github.com/rust-lang/rust
62 lines
1.2 KiB
Rust
62 lines
1.2 KiB
Rust
// Test that when a trait impl changes, fns whose body uses that trait
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// must also be recompiled.
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//@ incremental
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//@ compile-flags: -Z query-dep-graph
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#![feature(rustc_attrs)]
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#![allow(warnings)]
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fn main() { }
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pub trait Foo: Sized {
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fn method(self) { }
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}
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mod x {
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use Foo;
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#[rustc_if_this_changed]
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impl Foo for char { }
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impl Foo for u32 { }
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}
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mod y {
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use Foo;
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#[rustc_then_this_would_need(typeck)] //~ ERROR OK
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pub fn with_char() {
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char::method('a');
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}
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#[rustc_then_this_would_need(typeck)] //~ ERROR OK
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pub fn take_foo_with_char() {
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take_foo::<char>('a');
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}
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#[rustc_then_this_would_need(typeck)] //~ ERROR OK
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pub fn with_u32() {
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u32::method(22);
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}
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#[rustc_then_this_would_need(typeck)] //~ ERROR OK
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pub fn take_foo_with_u32() {
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take_foo::<u32>(22);
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}
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pub fn take_foo<T:Foo>(t: T) { }
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}
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mod z {
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use y;
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// These are expected to yield errors, because changes to `x`
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// affect the BODY of `y`, but not its signature.
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#[rustc_then_this_would_need(typeck)] //~ ERROR no path
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pub fn z() {
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y::with_char();
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y::with_u32();
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}
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}
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