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https://github.com/rust-lang/rust-clippy
synced 2024-11-10 07:04:18 +00:00
Add ui test to ensure that if 0
is returned from both if
and else
, it will not break clippy
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parent
2622a87587
commit
27c6343365
5 changed files with 29 additions and 10 deletions
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@ -184,18 +184,18 @@ fn main() {
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let mut m = Mock;
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let mut u_32 = 3000;
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let a = 200;
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let mut _b = 8;
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let mut b = 8;
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if m != 0 {
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m -= 1;
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}
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if a > 0 {
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_b -= 1;
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b -= 1;
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}
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if 0 > a {
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_b -= 1;
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b -= 1;
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}
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if u_32 > 0 {
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@ -214,4 +214,11 @@ fn main() {
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} else if u_32 > 0 {
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u_32 -= 1;
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}
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let result = if a < b {
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println!("we shouldn't remove this");
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0
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} else {
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a - b
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};
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}
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@ -230,18 +230,18 @@ fn main() {
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let mut m = Mock;
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let mut u_32 = 3000;
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let a = 200;
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let mut _b = 8;
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let mut b = 8;
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if m != 0 {
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m -= 1;
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}
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if a > 0 {
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_b -= 1;
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b -= 1;
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}
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if 0 > a {
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_b -= 1;
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b -= 1;
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}
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if u_32 > 0 {
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@ -1,8 +1,10 @@
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#![warn(clippy::implicit_saturating_sub)]
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#![allow(clippy::if_same_then_else)]
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fn main() {
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let a = 12u32;
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let b = 13u32;
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let c = 8u32;
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let result = a.saturating_sub(b);
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//~^ ERROR: manual arithmetic check found
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@ -13,4 +15,10 @@ fn main() {
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//~^ ERROR: manual arithmetic check found
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let result = a.saturating_sub(b);
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//~^ ERROR: manual arithmetic check found
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// Should not warn!
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let result = if a > b { a - b } else { a - c };
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// Just to check it won't break clippy.
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let result = if b > a { 0 } else { 0 };
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}
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@ -1,4 +1,5 @@
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#![warn(clippy::implicit_saturating_sub)]
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#![allow(clippy::if_same_then_else)]
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fn main() {
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let a = 12u32;
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@ -17,4 +18,7 @@ fn main() {
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// Should not warn!
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let result = if a > b { a - b } else { a - c };
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// Just to check it won't break clippy.
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let result = if b > a { 0 } else { 0 };
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}
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@ -1,5 +1,5 @@
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error: manual arithmetic check found
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--> tests/ui/manual_arithmetic_check.rs:7:18
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--> tests/ui/manual_arithmetic_check.rs:9:18
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LL | let result = if a > b { a - b } else { 0 };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)`
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@ -8,19 +8,19 @@ LL | let result = if a > b { a - b } else { 0 };
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= help: to override `-D warnings` add `#[allow(clippy::implicit_saturating_sub)]`
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error: manual arithmetic check found
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--> tests/ui/manual_arithmetic_check.rs:9:18
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--> tests/ui/manual_arithmetic_check.rs:11:18
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LL | let result = if b < a { a - b } else { 0 };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)`
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error: manual arithmetic check found
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--> tests/ui/manual_arithmetic_check.rs:12:18
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--> tests/ui/manual_arithmetic_check.rs:14:18
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LL | let result = if a < b { 0 } else { a - b };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)`
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error: manual arithmetic check found
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--> tests/ui/manual_arithmetic_check.rs:14:18
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--> tests/ui/manual_arithmetic_check.rs:16:18
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LL | let result = if b > a { 0 } else { a - b };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)`
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