From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- .../2229_closure_analysis/diagnostics/arrays.rs | 85 ++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 src/test/ui/closures/2229_closure_analysis/diagnostics/arrays.rs (limited to 'src/test/ui/closures/2229_closure_analysis/diagnostics/arrays.rs') diff --git a/src/test/ui/closures/2229_closure_analysis/diagnostics/arrays.rs b/src/test/ui/closures/2229_closure_analysis/diagnostics/arrays.rs new file mode 100644 index 000000000..93131b2ac --- /dev/null +++ b/src/test/ui/closures/2229_closure_analysis/diagnostics/arrays.rs @@ -0,0 +1,85 @@ +// edition:2021 + +// Test that arrays are completely captured by closures by relying on the borrow check diagnostics + +fn arrays_1() { + let mut arr = [1, 2, 3, 4, 5]; + + let mut c = || { + arr[0] += 10; + }; + + // c will capture `arr` completely, therefore another index into the + // array can't be modified here + arr[1] += 10; + //~^ ERROR: cannot use `arr` because it was mutably borrowed + //~| ERROR: cannot use `arr[_]` because it was mutably borrowed + c(); +} + +fn arrays_2() { + let mut arr = [1, 2, 3, 4, 5]; + + let c = || { + println!("{:#?}", &arr[3..4]); + }; + + // c will capture `arr` completely, therefore another index into the + // array can't be modified here + arr[1] += 10; + //~^ ERROR: cannot assign to `arr[_]` because it is borrowed + c(); +} + +fn arrays_3() { + let mut arr = [1, 2, 3, 4, 5]; + + let c = || { + println!("{}", arr[3]); + }; + + // c will capture `arr` completely, therefore another index into the + // array can't be modified here + arr[1] += 10; + //~^ ERROR: cannot assign to `arr[_]` because it is borrowed + c(); +} + +fn arrays_4() { + let mut arr = [1, 2, 3, 4, 5]; + + let mut c = || { + arr[1] += 10; + }; + + // c will capture `arr` completely, therefore we cannot borrow another index + // into the array. + println!("{}", arr[3]); + //~^ ERROR: cannot use `arr` because it was mutably borrowed + //~| ERROR: cannot borrow `arr[_]` as immutable because it is also borrowed as mutable + + c(); +} + +fn arrays_5() { + let mut arr = [1, 2, 3, 4, 5]; + + let mut c = || { + arr[1] += 10; + }; + + // c will capture `arr` completely, therefore we cannot borrow other indecies + // into the array. + println!("{:#?}", &arr[3..2]); + //~^ ERROR: cannot borrow `arr` as immutable because it is also borrowed as mutable + + c(); +} + +fn main() { + arrays_1(); + arrays_2(); + arrays_3(); + arrays_4(); + arrays_5(); +} -- cgit v1.2.3