# V0006 malformed_number

URL: /docs/errors/V0006
Markdown: /docs/errors/V0006.md

> A numeric literal is malformed, such as 0x with no digits, 1. or .5.

An error from the `lex` phase. `sakura explain V0006` prints this explanation offline.

A numeric literal is malformed, such as `0x` with no digits, `1.` or `.5`. Write `1.0` and
`0.5`.

## Wrong program [#wrong-program]

[`compiler/tests/ui/V0006_malformed_number.sakura`](https://github.com/icantcodefyi/sakuralang/blob/master/compiler/tests/ui/V0006_malformed_number.sakura), which the compiler's ui suite runs through `sakura check`:

```sakura
fn mask() -> Int { 0x }
```

`sakura check --json` reports this record (pretty-printed; `$DIR` is the fixture's directory):

```json
{
  "schema_version": "1.0",
  "kind": "diagnostic",
  "id": "d:1f18f202097b2ae9",
  "code": "V0006",
  "severity": "error",
  "phase": "lex",
  "message": "expected digits after the radix prefix",
  "snapshot": "sha256:$SNAPSHOT",
  "symbol_id": "main::V0006_malformed_number::mask",
  "spans": [
    {
      "uri": "file://$DIR/V0006_malformed_number.sakura",
      "content_hash": "sha256:edf2b37f01fbd7978f1ea473f4aebd0b929ec45ffb55cbb3ccb801ffbde17eb2",
      "start_byte": 53,
      "end_byte": 55,
      "role": "primary"
    }
  ],
  "related_ids": [],
  "expected": null,
  "actual": null,
  "obligation": null,
  "counterexample": null,
  "explanation_uri": "sakura://explain/V0006",
  "fixes": []
}
```

## Fixed program [#fixed-program]

[`compiler/tests/ui/V0006_malformed_number.fixed.sakura`](https://github.com/icantcodefyi/sakuralang/blob/master/compiler/tests/ui/V0006_malformed_number.fixed.sakura), which `sakura check` accepts with no diagnostics:

```sakura
fn mask() -> Int { 0xff }
```