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Diffstat (limited to '')
-rw-r--r-- | tests/ui/lint/unused/issue-103320-must-use-ops.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/lint/unused/issue-103320-must-use-ops.rs b/tests/ui/lint/unused/issue-103320-must-use-ops.rs new file mode 100644 index 000000000..597d312fa --- /dev/null +++ b/tests/ui/lint/unused/issue-103320-must-use-ops.rs @@ -0,0 +1,27 @@ +// check-pass + +#![warn(unused_must_use)] +#![feature(never_type)] + +use std::ops::Add; +use std::ops::Sub; +use std::ops::Mul; +use std::ops::Div; +use std::ops::Rem; + +fn main() { + let x = 2_u32; + (x.add(4), x.sub(4), x.mul(4), x.div(4), x.rem(4)); + + x.add(4); //~ WARN unused return value of `add` that must be used + + x.sub(4); //~ WARN unused return value of `sub` that must be used + + x.mul(4); //~ WARN unused return value of `mul` that must be used + + x.div(4); //~ WARN unused return value of `div` that must be used + + x.rem(4); //~ WARN unused return value of `rem` that must be used + + println!("{}", x); +} |