From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/loops/loop-proper-liveness.rs | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 tests/ui/loops/loop-proper-liveness.rs (limited to 'tests/ui/loops/loop-proper-liveness.rs') diff --git a/tests/ui/loops/loop-proper-liveness.rs b/tests/ui/loops/loop-proper-liveness.rs new file mode 100644 index 000000000..6546e3977 --- /dev/null +++ b/tests/ui/loops/loop-proper-liveness.rs @@ -0,0 +1,32 @@ +fn test1() { + // In this test the outer 'a loop may terminate without `x` getting initialised. Although the + // `x = loop { ... }` statement is reached, the value itself ends up never being computed and + // thus leaving `x` uninit. + let x: i32; + 'a: loop { + x = loop { break 'a }; + } + println!("{:?}", x); //~ ERROR E0381 +} + +// test2 and test3 should not fail. +fn test2() { + // In this test the `'a` loop will never terminate thus making the use of `x` unreachable. + let x: i32; + 'a: loop { + x = loop { continue 'a }; + } + println!("{:?}", x); +} + +fn test3() { + let x: i32; + // Similarly, the use of variable `x` is unreachable. + 'a: loop { + x = loop { return }; + } + println!("{:?}", x); +} + +fn main() { +} -- cgit v1.2.3