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 --- src/tools/clippy/tests/ui/suspicious_map.rs | 32 +++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/tools/clippy/tests/ui/suspicious_map.rs (limited to 'src/tools/clippy/tests/ui/suspicious_map.rs') diff --git a/src/tools/clippy/tests/ui/suspicious_map.rs b/src/tools/clippy/tests/ui/suspicious_map.rs new file mode 100644 index 000000000..3a2a10cf0 --- /dev/null +++ b/src/tools/clippy/tests/ui/suspicious_map.rs @@ -0,0 +1,32 @@ +#![warn(clippy::suspicious_map)] + +fn main() { + let _ = (0..3).map(|x| x + 2).count(); + + let f = |x| x + 1; + let _ = (0..3).map(f).count(); +} + +fn negative() { + // closure with side effects + let mut sum = 0; + let _ = (0..3).map(|x| sum += x).count(); + + // closure variable with side effects + let ext_closure = |x| sum += x; + let _ = (0..3).map(ext_closure).count(); + + // closure that returns unit + let _ = (0..3) + .map(|x| { + // do nothing + }) + .count(); + + // external function + let _ = (0..3).map(do_something).count(); +} + +fn do_something(t: T) -> String { + unimplemented!() +} -- cgit v1.2.3