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Add comment explaining the reversed operands tests

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Also, fix the goofy reversed names with something clearer.
This commit is contained in:
jumbatm 2020-04-03 08:05:16 +10:00
parent de02a9ed67
commit 0399d141b6
4 changed files with 60 additions and 59 deletions
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32
src/test/ui/associated-const/issue-69020-assoc-const-arith-overflow.noopt.stderr
View File

@ -1,5 +1,5 @@
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:28:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:29:22
|
LL | const NEG: i32 = -i32::MIN + T::NEG;
| ^^^^^^^^^ attempt to negate with overflow
@ -7,25 +7,25 @@ LL | const NEG: i32 = -i32::MIN + T::NEG;
= note: `#[deny(arithmetic_overflow)]` on by default
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:30:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:31:35
|
LL | const GEN: i32 = T::NEG + (-i32::MIN);
| ^^^^^^^^^^^ attempt to negate with overflow
LL | const NEG_REV: i32 = T::NEG + (-i32::MIN);
| ^^^^^^^^^^^ attempt to negate with overflow
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:33:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:34:22
|
LL | const ADD: i32 = (i32::MAX+1) + T::ADD;
| ^^^^^^^^^^^^ attempt to add with overflow
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:35:32
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:36:36
|
LL | const DDA: i32 = T::ADD + (i32::MAX+1);
| ^^^^^^^^^^^^ attempt to add with overflow
LL | const ADD_REV: i32 = T::ADD + (i32::MAX+1);
| ^^^^^^^^^^^^ attempt to add with overflow
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:38:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:39:22
|
LL | const DIV: i32 = (1/0) + T::DIV;
| ^^^^^ attempt to divide by zero
@ -33,22 +33,22 @@ LL | const DIV: i32 = (1/0) + T::DIV;
= note: `#[deny(unconditional_panic)]` on by default
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:40:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:41:35
|
LL | const VID: i32 = T::DIV + (1/0);
| ^^^^^ attempt to divide by zero
LL | const DIV_REV: i32 = T::DIV + (1/0);
| ^^^^^ attempt to divide by zero
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:43:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:44:22
|
LL | const OOB: i32 = [1][1] + T::OOB;
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:45:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:46:35
|
LL | const BOO: i32 = T::OOB + [1][1];
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
LL | const OOB_REV: i32 = T::OOB + [1][1];
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
error: aborting due to 8 previous errors

32
src/test/ui/associated-const/issue-69020-assoc-const-arith-overflow.opt.stderr
View File

@ -1,5 +1,5 @@
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:28:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:29:22
|
LL | const NEG: i32 = -i32::MIN + T::NEG;
| ^^^^^^^^^ attempt to negate with overflow
@ -7,25 +7,25 @@ LL | const NEG: i32 = -i32::MIN + T::NEG;
= note: `#[deny(arithmetic_overflow)]` on by default
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:30:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:31:35
|
LL | const GEN: i32 = T::NEG + (-i32::MIN);
| ^^^^^^^^^^^ attempt to negate with overflow
LL | const NEG_REV: i32 = T::NEG + (-i32::MIN);
| ^^^^^^^^^^^ attempt to negate with overflow
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:33:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:34:22
|
LL | const ADD: i32 = (i32::MAX+1) + T::ADD;
| ^^^^^^^^^^^^ attempt to add with overflow
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:35:32
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:36:36
|
LL | const DDA: i32 = T::ADD + (i32::MAX+1);
| ^^^^^^^^^^^^ attempt to add with overflow
LL | const ADD_REV: i32 = T::ADD + (i32::MAX+1);
| ^^^^^^^^^^^^ attempt to add with overflow
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:38:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:39:22
|
LL | const DIV: i32 = (1/0) + T::DIV;
| ^^^^^ attempt to divide by zero
@ -33,22 +33,22 @@ LL | const DIV: i32 = (1/0) + T::DIV;
= note: `#[deny(unconditional_panic)]` on by default
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:40:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:41:35
|
LL | const VID: i32 = T::DIV + (1/0);
| ^^^^^ attempt to divide by zero
LL | const DIV_REV: i32 = T::DIV + (1/0);
| ^^^^^ attempt to divide by zero
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:43:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:44:22
|
LL | const OOB: i32 = [1][1] + T::OOB;
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:45:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:46:35
|
LL | const BOO: i32 = T::OOB + [1][1];
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
LL | const OOB_REV: i32 = T::OOB + [1][1];
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
error: aborting due to 8 previous errors

32
src/test/ui/associated-const/issue-69020-assoc-const-arith-overflow.opt_with_overflow_checks.stderr
View File

@ -1,5 +1,5 @@
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:28:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:29:22
|
LL | const NEG: i32 = -i32::MIN + T::NEG;
| ^^^^^^^^^ attempt to negate with overflow
@ -7,25 +7,25 @@ LL | const NEG: i32 = -i32::MIN + T::NEG;
= note: `#[deny(arithmetic_overflow)]` on by default
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:30:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:31:35
|
LL | const GEN: i32 = T::NEG + (-i32::MIN);
| ^^^^^^^^^^^ attempt to negate with overflow
LL | const NEG_REV: i32 = T::NEG + (-i32::MIN);
| ^^^^^^^^^^^ attempt to negate with overflow
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:33:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:34:22
|
LL | const ADD: i32 = (i32::MAX+1) + T::ADD;
| ^^^^^^^^^^^^ attempt to add with overflow
error: this arithmetic operation will overflow
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:35:32
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:36:36
|
LL | const DDA: i32 = T::ADD + (i32::MAX+1);
| ^^^^^^^^^^^^ attempt to add with overflow
LL | const ADD_REV: i32 = T::ADD + (i32::MAX+1);
| ^^^^^^^^^^^^ attempt to add with overflow
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:38:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:39:22
|
LL | const DIV: i32 = (1/0) + T::DIV;
| ^^^^^ attempt to divide by zero
@ -33,22 +33,22 @@ LL | const DIV: i32 = (1/0) + T::DIV;
= note: `#[deny(unconditional_panic)]` on by default
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:40:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:41:35
|
LL | const VID: i32 = T::DIV + (1/0);
| ^^^^^ attempt to divide by zero
LL | const DIV_REV: i32 = T::DIV + (1/0);
| ^^^^^ attempt to divide by zero
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:43:22
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:44:22
|
LL | const OOB: i32 = [1][1] + T::OOB;
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
error: this operation will panic at runtime
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:45:31
--> $DIR/issue-69020-assoc-const-arith-overflow.rs:46:35
|
LL | const BOO: i32 = T::OOB + [1][1];
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
LL | const OOB_REV: i32 = T::OOB + [1][1];
| ^^^^^^ index out of bounds: the len is 1 but the index is 1
error: aborting due to 8 previous errors

23
src/test/ui/associated-const/issue-69020-assoc-const-arith-overflow.rs
View File

@ -9,39 +9,40 @@ use std::i32;
pub trait Foo {
const NEG: i32;
const GEN: i32;
const NEG_REV: i32;
const ADD: i32;
const DDA: i32;
const ADD_REV: i32;
const DIV: i32;
const VID: i32;
const DIV_REV: i32;
const OOB: i32;
const BOO: i32;
const OOB_REV: i32;
}
// These constants cannot be evaluated already (they depend on `T::N`), so
// they can just be linted like normal run-time code. But codegen works
// a bit different in const context, so this test makes sure that we still catch overflow.
// These constants cannot be evaluated already (they depend on `T::N`), so they can just be linted
// like normal run-time code. But codegen works a bit different in const context, so this test
// makes sure that we still catch overflow. Also make sure we emit the same lints if we reverse the
// operands (so that the generic operand comes first).
impl<T: Foo> Foo for Vec<T> {
const NEG: i32 = -i32::MIN + T::NEG;
//~^ ERROR arithmetic operation will overflow
const GEN: i32 = T::NEG + (-i32::MIN);
const NEG_REV: i32 = T::NEG + (-i32::MIN);
//~^ ERROR arithmetic operation will overflow
const ADD: i32 = (i32::MAX+1) + T::ADD;
//~^ ERROR arithmetic operation will overflow
const DDA: i32 = T::ADD + (i32::MAX+1);
const ADD_REV: i32 = T::ADD + (i32::MAX+1);
//~^ ERROR arithmetic operation will overflow
const DIV: i32 = (1/0) + T::DIV;
//~^ ERROR operation will panic
const VID: i32 = T::DIV + (1/0);
const DIV_REV: i32 = T::DIV + (1/0);
//~^ ERROR operation will panic
const OOB: i32 = [1][1] + T::OOB;
//~^ ERROR operation will panic
const BOO: i32 = T::OOB + [1][1];
const OOB_REV: i32 = T::OOB + [1][1];
//~^ ERROR operation will panic
}