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wcc/ww: mangle imported symbols on dotted import path (#22 M1, #32)

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Switch symbol mangling from the import leaf clause to the full dotted import path for directory packages; single-file imports keep package-clause mangling (isdir-gate: imported<=>directory-import). The root build unit's fn main stays bare, every other top-level decl mangles, closing #31's duplicate-main hazard by construction (#32). Both stages, byte-identical.

Single commit, not split: the bare rename (f244af3) is red on its own because it unmasks cross-module resolution gaps that do not reproduce pre-M1, so the fixes are intrinsic to making the rename correct. Included: wwstage fnret/fnparamslookupmod map import alias->path (#199b cross-module union-variant scrutinee resolved the wrong fn's union); cstage use_path prefers the referencing module's import for an ambiguous leaf alias (sha256 crypto.math vs strconv math). Tests table-driven: 989_m1mangle_run/_sym, 989_m1union_run (gate-visible per-arm exit codes + cs==ww byte-id).
This commit is contained in:
Hojun-Cho
2026-06-15 17:37:18 +09:00
parent 64d6c15e41
commit f308818b4b
30 changed files with 1851 additions and 241 deletions
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cmd/wcc/tok.c
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@@ -104,6 +104,7 @@ tokname(Tkind k)
case TK_ENUM: return "enum";
case TK_MODULE: return "package";
case TK_MODRESET: return "//ww:module-reset";
case TK_MODPATH: return "//ww:module";
case TK_LPAREN: return "(";
case TK_RPAREN: return ")";