diff options
Diffstat (limited to 'src/test/ui/lint/unused/must-use-ops.rs')
-rw-r--r-- | src/test/ui/lint/unused/must-use-ops.rs | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/ui/lint/unused/must-use-ops.rs b/src/test/ui/lint/unused/must-use-ops.rs new file mode 100644 index 000000000..3e425727e --- /dev/null +++ b/src/test/ui/lint/unused/must-use-ops.rs @@ -0,0 +1,41 @@ +// Issue #50124 - Test warning for unused operator expressions + +// check-pass + +#![warn(unused_must_use)] + +fn main() { + let val = 1; + let val_pointer = &val; + +// Comparison Operators + val == 1; //~ WARNING unused comparison + val < 1; //~ WARNING unused comparison + val <= 1; //~ WARNING unused comparison + val != 1; //~ WARNING unused comparison + val >= 1; //~ WARNING unused comparison + val > 1; //~ WARNING unused comparison + +// Arithmetic Operators + val + 2; //~ WARNING unused arithmetic operation + val - 2; //~ WARNING unused arithmetic operation + val / 2; //~ WARNING unused arithmetic operation + val * 2; //~ WARNING unused arithmetic operation + val % 2; //~ WARNING unused arithmetic operation + +// Logical Operators + true && true; //~ WARNING unused logical operation + false || true; //~ WARNING unused logical operation + +// Bitwise Operators + 5 ^ val; //~ WARNING unused bitwise operation + 5 & val; //~ WARNING unused bitwise operation + 5 | val; //~ WARNING unused bitwise operation + 5 << val; //~ WARNING unused bitwise operation + 5 >> val; //~ WARNING unused bitwise operation + +// Unary Operators + !val; //~ WARNING unused unary operation + -val; //~ WARNING unused unary operation + *val_pointer; //~ WARNING unused unary operation +} |