Hojun-Cho
e3237d1bcb
The bare-leaf TNAME lookup in resolvealias used flat scopelookup, which bucket-walks all matching names and returns whichever entry hashed in first. Two modules each declaring `type invalid = ...` collided in the same flat scope: utf8.invalid (`!void`) and strconv.invalid (`!i32`) resolved to whichever registered first. That drove a localloadop divergence at the 994/995 byte-id gates — MOVSXD vs MOVQ — depending on which alias the checker happened to pick for a given site. Switch to scopelookupprefer(c.cur, c.curmod, nm), mirroring cstage cmd/wcc/check.c:66 (scope_lookup_prefer at sym.c:103): when the current module matches the bucket entry's b.mod, prefer it; else fall back to first-found. The SK_USE→scopelookuptype fallback for the #61 A.5 bare-TNAME-vs-imported-module collision case is unchanged. Six remaining bare-leaf scopelookup sites in this file (exprtype N_IDENT, N_DOT-callee leaf, varianterr, scruttype, exprtypeoftry N_IDENT + N_CALL, walker N_IDENT) are punted to #55 — this commit fixes the path the reproducer surfaced and leaves the rest behind an explicit follow-up so the byte-id corpus stays the test for each conversion.