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Add explanation message for E0641
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@ -351,6 +351,7 @@ E0635: include_str!("./error_codes/E0635.md"),
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E0636: include_str!("./error_codes/E0636.md"),
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E0638: include_str!("./error_codes/E0638.md"),
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E0639: include_str!("./error_codes/E0639.md"),
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E0641: include_str!("./error_codes/E0641.md"),
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E0642: include_str!("./error_codes/E0642.md"),
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E0643: include_str!("./error_codes/E0643.md"),
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E0644: include_str!("./error_codes/E0644.md"),
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@ -585,7 +586,6 @@ E0744: include_str!("./error_codes/E0744.md"),
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E0634, // type has conflicting packed representaton hints
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E0637, // "'_" is not a valid lifetime bound
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E0640, // infer outlives requirements
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E0641, // cannot cast to/from a pointer with an unknown kind
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// E0645, // trait aliases not finished
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E0657, // `impl Trait` can only capture lifetimes bound at the fn level
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E0667, // `impl Trait` in projections
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19
src/librustc_error_codes/error_codes/E0641.md
Normal file
19
src/librustc_error_codes/error_codes/E0641.md
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@ -0,0 +1,19 @@
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Attempted to cast to/from a pointer with an unknown kind.
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Erroneous code examples:
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```compile_fail,E0641
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let b = 0 as *const _; // error
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```
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Must give information for type of pointer that is being cast from/to if the
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type cannot be inferred.
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```
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// Creating a pointer from reference: type can be inferred
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let a = &(String::from("Hello world!")) as *const _; // Ok
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let b = 0 as *const i32; // Ok
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let c: *const i32 = 0 as *const _; // Ok
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```
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