Invalid number parsing for unsigned 64-bit integers > 2**63 - 1 (tkUInt64Lit not in case statement at end of GetNumber proc in compiler/lexer.nim)

[boydgreenfield]

Currently, unsigned 64-bit integers larger than 2**63 - 1 (the max value of a signed 64-bit integer) raises an error, e.g., "Error: 9223372036854775798 is not a valid number".

I believe this relates to the lack of a tkUInt64Lit type in the case statement at the end of the GetNumber proc in compiler/lexer.nim, and specifically the code path starting at line ~392.

The following code demonstrates the bug:

let w = 9223372036854775798'i64  # 2*63 - 1. Works as expected.
echo(w)
let x = 2147483647'i32  # 2**31 - 1
echo(x)
let y = 2147483647'u64  # 2**31 - 1
echo(y)
let z = 2147483648'u64  # Any number > 2**31 - 1 raises an error.
echo(z)

Note: This relates to the same code as discussed in issue #572 .

I will also attempt to patch and submit a PR.

[gradha]

Current git version compiles and runs, generating:

9223372036854775798
2147483647
2147483647
2147483648

So it seems the bug was already fixed. A new stable version will be released soon, but in the meantime you can use the git one.

[boydgreenfield]

So it does, my apologies (I thought I'd also tested it on the latest, but was still using 0.9.2). Thanks gradha!