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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/nll/closure-requirements/escape-upvar-ref.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/nll/closure-requirements/escape-upvar-ref.rs')
-rw-r--r-- | tests/ui/nll/closure-requirements/escape-upvar-ref.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/nll/closure-requirements/escape-upvar-ref.rs b/tests/ui/nll/closure-requirements/escape-upvar-ref.rs new file mode 100644 index 000000000..0a562a0a1 --- /dev/null +++ b/tests/ui/nll/closure-requirements/escape-upvar-ref.rs @@ -0,0 +1,33 @@ +// Test closure that: +// +// - captures a variable `y` by reference +// - stores that reference to `y` into another, longer-lived place (`p`) +// +// Both of these are upvars of reference type (the capture of `y` is +// of type `&'a i32`, the capture of `p` is of type `&mut &'b +// i32`). The closure thus computes a relationship between `'a` and +// `'b`. This relationship is propagated to the closure creator, +// which reports an error. + +// compile-flags:-Zverbose + +#![feature(rustc_attrs)] + +#[rustc_regions] +fn test() { + let x = 44; + let mut p = &x; + + { + let y = 22; + let mut closure = || p = &y; + //~^ ERROR `y` does not live long enough [E0597] + closure(); + } + + deref(p); +} + +fn deref(_p: &i32) { } + +fn main() { } |