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V1011 missing_body

A function has no body.

An error from the resolve phase. sakura explain V1011 prints this explanation offline.

A function has no body. Only @external and @llm declarations may omit it (design §11.1, §13.6). Write the body, or leave a typed hole ({ ?todo }) that sakura check accepts and reports with its expected type.

Wrong:

fn answer() -> Int

Fixed:

fn answer() -> Int { 42 }

Wrong program

compiler/tests/ui/V1011_missing_body.sakura, which the compiler's ui suite runs through sakura check:

fn answer() -> Int

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

{
  "schema_version": "1.0",
  "kind": "diagnostic",
  "id": "d:113646a45572cba8",
  "code": "V1011",
  "severity": "error",
  "phase": "resolve",
  "message": "function `answer` has no body; only `@external` and `@llm` declarations may omit it",
  "snapshot": "sha256:$SNAPSHOT",
  "symbol_id": "main::V1011_missing_body::answer",
  "spans": [
    {
      "uri": "file://$DIR/V1011_missing_body.sakura",
      "content_hash": "sha256:a0934d9e9c56abf72c8033a6645bf7dbffd399f7656e88d39811aa065ea0cffd",
      "start_byte": 63,
      "end_byte": 69,
      "role": "primary"
    }
  ],
  "related_ids": [],
  "expected": null,
  "actual": null,
  "obligation": null,
  "counterexample": null,
  "explanation_uri": "sakura://explain/V1011",
  "fixes": []
}

Fixed program

compiler/tests/ui/V1011_missing_body.fixed.sakura, which sakura check accepts with no diagnostics:

fn answer() -> Int { 42 }
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