Function build_dump 

pub fn build_dump(
    nam: &str,
    dump: &str,
    _files: &[String],
    _ali: i32,
    _map: i32,
    _flags: u32,
) -> i32

Port of build_dump(char *nam, char *dump, char **files, int ali, int map, int flags) from Src/parse.c:3397. Source-file → wordcode dump compiler.

Status: scaffolded but the wordcode-emit step depends on parse_string returning a fully-wired Eprog with prog/strs/ npats fields populated. The current parse_string/parse shape emits an AST (ZshProgram) but not yet the wordcode array C expects in this dump format. Until that lands, this returns 1 with a clear “wordcode emit not yet ported” message so callers (autoload from .zwc, zcompile path/to/file) fail loud.