local function declarations are silently dropped

[davydog187]

Severity: High
Area: Compiler — codegen.ex

Description

local function name() ... end (i.e., Statement.LocalFunc AST nodes) has no codegen handler. The catch-all defp gen_statement(_stmt, ctx), do: {[], ctx} silently discards the declaration — no instructions are emitted and no error is raised.

Reproduction

local function add(a, b)
  return a + b
end
return add(1, 2)
-- Expected: 3
-- Actual: runtime error — "add" is nil

Workaround

Use a regular (global) function declaration or an assignment:

function add(a, b)   -- global
  return a + b
end

local add = function(a, b)   -- explicit assignment
  return a + b
end