Files
sx/examples/0719-modules-cli-and-json.sx
agra 3edc67521b fix(lower): resolve cross-module same-name functions by identity [0100]
Two modules each exporting a top-level function with the same short name
(std.cli.parse 3-param, std.json.parse 2-param) collided in IR lowering's
bare-name function table. fn_ast_map (name -> AST) was last-wins while
module.functions / resolveFuncByName are first-wins, so importing both and
calling one bound one function's AST against the other's FuncId and tripped
lazyLowerFunction's param-count assert (lower.zig:1606) — reached
unreachable code.

Fix:
- Register a namespaced import's OWN plain functions under their qualified
  name (ns.fn) in fn_ast_map, giving cli.parse / json.parse independent
  identities. The qualified resolution paths in CallResolver.plan /
  lowerCall already prefer ns.fn. NamespaceDecl now carries own_decls
  (populated in imports.addNamespace). Generic/comptime/pack/foreign
  functions are excluded (they dispatch by monomorphization off the bare
  template name); no eager declareFunction (it would resolve types before
  the forward-alias fixpoint).
- Make scanDecls' bare fn_ast_map registration first-wins so a later
  namespace recursion cannot clobber an earlier (flat) entry, aligning it
  with mergeFlat / resolveFuncByName.

Regression: examples/0719-modules-cli-and-json.sx imports both std.cli and
std.json under distinct namespaces and calls both parses; panics pre-fix,
passes after. issues/0100 marked RESOLVED.
2026-06-06 02:30:19 +03:00

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// Two modules that each export a top-level `parse` — `std.cli.parse`
// (3-param subcommand dispatch) and `std.json.parse` (2-param document
// reader) — imported into ONE program under DISTINCT namespaces, with
// BOTH `parse`s actually called.
//
// Regression (issue 0100): same-name cross-module functions collided in
// the bare-name function table during IR lowering. Lowering re-resolved a
// call by SHORT name, so importing both modules and calling one bound the
// wrong-arity same-named function and tripped `lazyLowerFunction`'s
// param-count assert (panic). The fix resolves each `pkg.parse(...)` to a
// UNIQUE module-qualified FuncId, so `cli.parse` and `json.parse` are
// independent identities.
#import "modules/std.sx";
cli :: #import "modules/std/cli.sx";
json :: #import "modules/std/json.sx";
report :: (label: string, ok: bool) {
if ok { print("{}: ok\n", label); } else { print("{}: FAIL\n", label); }
}
main :: () -> ! {
gpa := GPA.init();
arena := Arena.init(xx gpa, 8192);
defer arena.deinit();
// ── cli.parse: dispatch <group> <command> + a value flag ─────────
publish_flags : []FlagSpec = .[
FlagSpec.{ name = "out", takes_value = true, required = true },
];
cmds : []Command = .[
Command.{ group = "ci", command = "publish", flags = publish_flags },
Command.{ group = "ci", command = "status", flags = .[] },
];
argv : []string = .["ci", "publish", "--out", "dist"];
d : Diag = .{};
p := try cli.parse(argv, cmds, @d);
report("cli-group", p.group == "ci");
report("cli-command", p.command == "publish");
report("cli-index", p.cmd_index == 0);
report("cli-flag", p.value_of("out") == "dist");
// ── json.parse: read a small document into the value model ───────
doc := "{\"name\":\"sx\",\"xs\":[1,2,3]}";
root := try json.parse(doc, xx arena);
o := root.object;
report("json-members", o.len == 2);
report("json-key0", o.items[0].key == "name");
report("json-str", o.items[0].val.str == "sx");
xs := o.items[1].val.array;
report("json-arr-len", xs.len == 3);
report("json-arr-2", xs.items[2].int_ == 3);
print("=== DONE ===\n");
return;
}