diff options
Diffstat (limited to 'src/test/ui/lint/lint-type-limits.rs')
-rw-r--r-- | src/test/ui/lint/lint-type-limits.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/test/ui/lint/lint-type-limits.rs b/src/test/ui/lint/lint-type-limits.rs new file mode 100644 index 000000000..2b140f869 --- /dev/null +++ b/src/test/ui/lint/lint-type-limits.rs @@ -0,0 +1,27 @@ +#![allow(dead_code)] + +// compile-flags: -D unused-comparisons +fn main() { } + +fn foo() { + let mut i = 100_usize; + while i >= 0 { //~ ERROR comparison is useless due to type limits + i -= 1; + } +} + +fn bar() -> i8 { + return 123; +} + +fn bleh() { + let u = 42u8; + let _ = u > 255; //~ ERROR comparison is useless due to type limits + let _ = 255 < u; //~ ERROR comparison is useless due to type limits + let _ = u < 0; //~ ERROR comparison is useless due to type limits + let _ = 0 > u; //~ ERROR comparison is useless due to type limits + let _ = u <= 255; //~ ERROR comparison is useless due to type limits + let _ = 255 >= u; //~ ERROR comparison is useless due to type limits + let _ = u >= 0; //~ ERROR comparison is useless due to type limits + let _ = 0 <= u; //~ ERROR comparison is useless due to type limits +} |