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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.rs')
-rw-r--r-- | src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.rs b/src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.rs new file mode 100644 index 000000000..05b9db972 --- /dev/null +++ b/src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.rs @@ -0,0 +1,31 @@ +// Check that when we test the supertrait we ensure consistent use of +// lifetime parameters. In this case, implementing T2<'a,'b> requires +// an impl of T1<'a>, but we have an impl of T1<'b>. + +trait T1<'x> { + fn x(&self) -> &'x isize; +} + +trait T2<'x, 'y> : T1<'x> { + fn y(&self) -> &'y isize; +} + +struct S<'a, 'b> { + a: &'a isize, + b: &'b isize +} + +impl<'a,'b> T1<'b> for S<'a, 'b> { + fn x(&self) -> &'b isize { + self.b + } +} + +impl<'a,'b> T2<'a, 'b> for S<'a, 'b> { //~ ERROR cannot infer an appropriate lifetime + fn y(&self) -> &'b isize { + self.b + } +} + +pub fn main() { +} |