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wcc/cgen: #154 str==-global ident operand — name(SB) base in cbinop, not (BP) garbage (cstage)

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The str==/!= arm of cbinop had an N_IDENT fast-path that assumed the operand
was a local: localfind returns 0 for a module-global str, so it loaded
(BP)/8(BP) — saved-BP/retaddr garbage — into rt_streq. `p == sepstr` silently
compared garbage (returned wrong). Mirror #148's global branch at both sub-sites
(rhs/lhs): off==0 && let_islet -> LEAQ name(SB) base, load ptr/len. Distinct
per-site fast-path, not a shared choke (the by-value-global-arg family
#148/#150/#151 closes separately). cstage-only; the wwstage str== twin is #146
(-> #125 batch).

Pin test/wcc/989_strglobeq (table-driven: const+let globals, rhs+lhs ident,
==/!=, unequal + len>1 rows; teeth-proven). Surfaced by the lib/path c3
buffer-ops gate-1 oracle.
This commit is contained in:
Hojun-Cho
2026-06-08 13:18:59 +09:00
parent feae910a9b
commit 3f6b68cbf2
4 changed files with 155 additions and 8 deletions
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5
Makefile
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@@ -449,6 +449,7 @@ TESTS = $(BIN)/test_smoke $(BIN)/test_lex $(BIN)/test_parse $(BIN)/test_check \
$(BIN)/test_hex_run $(BIN)/test_utf8_run $(BIN)/test_bytes_run \
$(BIN)/test_path_run \
$(BIN)/test_letshadow_run \
$(BIN)/test_strglobeq_run \
$(BIN)/test_decimal_run $(BIN)/test_strconv_int_run \
$(BIN)/test_stof_run $(BIN)/test_ftos_run \
$(BIN)/test_memio_run $(BIN)/test_temp_run $(BIN)/test_getopt_run \
@@ -2002,6 +2003,10 @@ $(BIN)/test_letshadow_run: test/wcc/989_letshadow_run.c $(BIN)/ww $(BIN)/w6c \
$(BIN)/w6a $(BIN)/w6l $(LIB)/libwwrt.a | $(BIN)
$(CC) $(CFLAGS) -o $@ $<
$(BIN)/test_strglobeq_run: test/wcc/989_strglobeq_run.c $(BIN)/ww $(BIN)/w6c \
$(BIN)/w6a $(BIN)/w6l $(LIB)/libwwrt.a | $(BIN)
$(CC) $(CFLAGS) -o $@ $<
$(BIN)/test_ascii_run: test/wcc/904_ascii_run.c $(BIN)/ww $(BIN)/w6c \
$(BIN)/w6a $(BIN)/w6l $(LIB)/libwwrt.a | $(BIN)
$(CC) $(CFLAGS) -o $@ $<