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error: invalid unicode character escape
--> $DIR/literals-are-validated-before-expansion.rs:6:20
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LL | black_hole! { '\u{FFFFFF}' }
| ^^^^^^^^^^ invalid escape
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= help: unicode escape must be at most 10FFFF
error: invalid unicode character escape
--> $DIR/literals-are-validated-before-expansion.rs:8:39
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LL | black_hole! { "this is surrogate: \u{DAAA}" }
| ^^^^^^^^ invalid escape
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= help: unicode escape must not be a surrogate
error: aborting due to 2 previous errors
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