`std.debug.print("{}\n", .{1e.5});` should not compile about zig

[Vexu]

thread 49223 panic: attempt to unwrap error: InvalidCharacter
/home/vexu/Documents/zig/zig/lib/std/fmt/parse_float.zig:42:9: 0xb174ae6 in parseFloat__anon_101863 (zig)zig
        return parse.parseInfOrNan(T, s[i..], negative) orelse error.InvalidCharacter;
        ^
/home/vexu/Documents/zig/zig/lib/std/zig/AstGen.zig:8576:43: 0xac80d59 in numberLiteral (zig)
                error.InvalidCharacter => unreachable, // validated by tokenizer
                                          ^
/home/vexu/Documents/zig/zig/lib/std/zig/AstGen.zig:804:48: 0xa791f63 in expr (zig)
        .number_literal => return numberLiteral(gz, ri, node, node, .positive),
                                               ^