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-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0370.md | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0370.md b/compiler/rustc_error_codes/src/error_codes/E0370.md new file mode 100644 index 000000000..14e954722 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0370.md @@ -0,0 +1,35 @@ +The maximum value of an enum was reached, so it cannot be automatically +set in the next enum value. + +Erroneous code example: + +```compile_fail,E0370 +#[repr(i64)] +enum Foo { + X = 0x7fffffffffffffff, + Y, // error: enum discriminant overflowed on value after + // 9223372036854775807: i64; set explicitly via + // Y = -9223372036854775808 if that is desired outcome +} +``` + +To fix this, please set manually the next enum value or put the enum variant +with the maximum value at the end of the enum. Examples: + +``` +#[repr(i64)] +enum Foo { + X = 0x7fffffffffffffff, + Y = 0, // ok! +} +``` + +Or: + +``` +#[repr(i64)] +enum Foo { + Y = 0, // ok! + X = 0x7fffffffffffffff, +} +``` |