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Bless const tests with improved diagnostics
1 parent 67336bb commit 3ce8ca4

37 files changed

+442
-243
lines changed

‎src/test/compile-fail/consts/const-fn-error.rs‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -10,6 +10,7 @@ const fn f(x: usize) -> usize {
1010
//~| ERROR E0019
1111
//~| ERROR E0019
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//~| ERROR E0080
13+
//~| ERROR E0744
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sum += i;
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}
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sum

‎src/test/compile-fail/issue-52443.rs‎

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@@ -1,12 +1,16 @@
11
fn main() {
22
[(); & { loop { continue } } ]; //~ ERROR mismatched types
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//~^ ERROR `loop` is not allowed in a `const`
34
[(); loop { break }]; //~ ERROR mismatched types
5+
//~^ ERROR `loop` is not allowed in a `const`
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[(); {while true {break}; 0}];
57
//~^ ERROR constant contains unimplemented expression type
68
//~| ERROR constant contains unimplemented expression type
9+
//~| ERROR `while` is not allowed in a `const`
710
//~| WARN denote infinite loops with
811
[(); { for _ in 0usize.. {}; 0}];
912
//~^ ERROR calls in constants are limited to constant functions
13+
//~| ERROR `for` is not allowed in a `const`
1014
//~| ERROR references in constants may only refer to immutable values
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//~| ERROR constant contains unimplemented expression type
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//~| ERROR constant contains unimplemented expression type

‎src/test/ui/borrowck/issue-64453.rs‎

Lines changed: 1 addition & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -2,9 +2,7 @@ struct Project;
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struct Value;
33

44
static settings_dir: String = format!("");
5-
//~^ ERROR [E0019]
6-
//~| ERROR [E0015]
7-
//~| ERROR [E0015]
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//~^ ERROR `match` is not allowed in a `static`
86

97
fn from_string(_: String) -> Value {
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Value
@@ -13,7 +11,6 @@ fn set_editor(_: Value) {}
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1412
fn main() {
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let settings_data = from_string(settings_dir);
16-
//~^ ERROR cannot move out of static item `settings_dir` [E0507]
1714
let args: i32 = 0;
1815

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match args {

‎src/test/ui/borrowck/issue-64453.stderr‎

Lines changed: 3 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -1,34 +1,11 @@
1-
error[E0507]: cannot move out of static item `settings_dir`
2-
--> $DIR/issue-64453.rs:15:37
3-
|
4-
LL | let settings_data = from_string(settings_dir);
5-
| ^^^^^^^^^^^^ move occurs because `settings_dir` has type `std::string::String`, which does not implement the `Copy` trait
6-
7-
error[E0019]: static contains unimplemented expression type
8-
--> $DIR/issue-64453.rs:4:31
9-
|
10-
LL | static settings_dir: String = format!("");
11-
| ^^^^^^^^^^^
12-
|
13-
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
14-
15-
error[E0015]: calls in statics are limited to constant functions, tuple structs and tuple variants
16-
--> $DIR/issue-64453.rs:4:31
17-
|
18-
LL | static settings_dir: String = format!("");
19-
| ^^^^^^^^^^^
20-
|
21-
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
22-
23-
error[E0015]: calls in statics are limited to constant functions, tuple structs and tuple variants
1+
error[E0744]: `match` is not allowed in a `static`
242
--> $DIR/issue-64453.rs:4:31
253
|
264
LL | static settings_dir: String = format!("");
275
| ^^^^^^^^^^^
286
|
297
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
308

31-
error: aborting due to 4 previous errors
9+
error: aborting due to previous error
3210

33-
Some errors have detailed explanations: E0015, E0019, E0507.
34-
For more information about an error, try `rustc --explain E0015`.
11+
For more information about this error, try `rustc --explain E0744`.

‎src/test/ui/closures/issue-52437.rs‎

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,6 @@
11
fn main() {
22
[(); &(&'static: loop { |x| {}; }) as *const _ as usize]
33
//~^ ERROR: invalid label name `'static`
4+
//~| ERROR: `loop` is not allowed in a `const`
45
//~| ERROR: type annotations needed
56
}

‎src/test/ui/closures/issue-52437.stderr‎

Lines changed: 9 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -4,12 +4,19 @@ error: invalid label name `'static`
44
LL | [(); &(&'static: loop { |x| {}; }) as *const _ as usize]
55
| ^^^^^^^
66

7+
error[E0744]: `loop` is not allowed in a `const`
8+
--> $DIR/issue-52437.rs:2:13
9+
|
10+
LL | [(); &(&'static: loop { |x| {}; }) as *const _ as usize]
11+
| ^^^^^^^^^^^^^^^^^^^^^^^^^
12+
713
error[E0282]: type annotations needed
814
--> $DIR/issue-52437.rs:2:30
915
|
1016
LL | [(); &(&'static: loop { |x| {}; }) as *const _ as usize]
1117
| ^ consider giving this closure parameter a type
1218

13-
error: aborting due to 2 previous errors
19+
error: aborting due to 3 previous errors
1420

15-
For more information about this error, try `rustc --explain E0282`.
21+
Some errors have detailed explanations: E0282, E0744.
22+
For more information about an error, try `rustc --explain E0282`.

‎src/test/ui/consts/const-eval/infinite_loop.rs‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -7,8 +7,10 @@ fn main() {
77
while n != 0 {
88
//~^ ERROR constant contains unimplemented expression type
99
//~| ERROR constant contains unimplemented expression type
10+
//~| ERROR `while` is not allowed in a `const`
1011
n = if n % 2 == 0 { n/2 } else { 3*n + 1 };
1112
//~^ ERROR evaluation of constant value failed
13+
//~| ERROR `if` is not allowed in a `const`
1214
}
1315
n
1416
}];

‎src/test/ui/consts/const-eval/infinite_loop.stderr‎

Lines changed: 23 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,21 @@
1+
error[E0744]: `while` is not allowed in a `const`
2+
--> $DIR/infinite_loop.rs:7:9
3+
|
4+
LL | / while n != 0 {
5+
LL | |
6+
LL | |
7+
LL | |
8+
... |
9+
LL | |
10+
LL | | }
11+
| |_________^
12+
13+
error[E0744]: `if` is not allowed in a `const`
14+
--> $DIR/infinite_loop.rs:11:17
15+
|
16+
LL | n = if n % 2 == 0 { n/2 } else { 3*n + 1 };
17+
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
18+
119
error[E0019]: constant contains unimplemented expression type
220
--> $DIR/infinite_loop.rs:7:15
321
|
@@ -10,7 +28,8 @@ error[E0019]: constant contains unimplemented expression type
1028
LL | / while n != 0 {
1129
LL | |
1230
LL | |
13-
LL | | n = if n % 2 == 0 { n/2 } else { 3*n + 1 };
31+
LL | |
32+
... |
1433
LL | |
1534
LL | | }
1635
| |_________^
@@ -29,12 +48,12 @@ LL | | }];
2948
| |_____^
3049

3150
error[E0080]: evaluation of constant value failed
32-
--> $DIR/infinite_loop.rs:10:20
51+
--> $DIR/infinite_loop.rs:11:20
3352
|
3453
LL | n = if n % 2 == 0 { n/2 } else { 3*n + 1 };
3554
| ^^^^^^^^^^ duplicate interpreter state observed here, const evaluation will never terminate
3655

37-
error: aborting due to 3 previous errors
56+
error: aborting due to 5 previous errors
3857

39-
Some errors have detailed explanations: E0019, E0080.
58+
Some errors have detailed explanations: E0019, E0080, E0744.
4059
For more information about an error, try `rustc --explain E0019`.

‎src/test/ui/consts/const-eval/issue-52475.rs‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -4,7 +4,8 @@ fn main() {
44
let mut x = &0;
55
let mut n = 0;
66
while n < 5 {
7-
//~^ ERROR constant contains unimplemented expression type
7+
//~^ ERROR `while` is not allowed in a `const`
8+
//~| ERROR constant contains unimplemented expression type
89
//~| ERROR constant contains unimplemented expression type
910
n = (n + 1) % 5; //~ ERROR evaluation of constant value failed
1011
x = &0; // Materialize a new AllocId

‎src/test/ui/consts/const-eval/issue-52475.stderr‎

Lines changed: 16 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,15 @@
1+
error[E0744]: `while` is not allowed in a `const`
2+
--> $DIR/issue-52475.rs:6:9
3+
|
4+
LL | / while n < 5 {
5+
LL | |
6+
LL | |
7+
LL | |
8+
LL | | n = (n + 1) % 5;
9+
LL | | x = &0; // Materialize a new AllocId
10+
LL | | }
11+
| |_________^
12+
113
error[E0019]: constant contains unimplemented expression type
214
--> $DIR/issue-52475.rs:6:15
315
|
@@ -10,6 +22,7 @@ error[E0019]: constant contains unimplemented expression type
1022
LL | / while n < 5 {
1123
LL | |
1224
LL | |
25+
LL | |
1326
LL | | n = (n + 1) % 5;
1427
LL | | x = &0; // Materialize a new AllocId
1528
LL | | }
@@ -29,12 +42,12 @@ LL | | }];
2942
| |_____^
3043

3144
error[E0080]: evaluation of constant value failed
32-
--> $DIR/issue-52475.rs:9:17
45+
--> $DIR/issue-52475.rs:10:17
3346
|
3447
LL | n = (n + 1) % 5;
3548
| ^^^^^^^^^^^ duplicate interpreter state observed here, const evaluation will never terminate
3649

37-
error: aborting due to 3 previous errors
50+
error: aborting due to 4 previous errors
3851

39-
Some errors have detailed explanations: E0019, E0080.
52+
Some errors have detailed explanations: E0019, E0080, E0744.
4053
For more information about an error, try `rustc --explain E0019`.

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