94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
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* 697_samemod_prefer — same-module preference for bare-leaf lookup.
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*
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* Two modules each export `read` with intentionally distinct
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* signatures (mod1: i32 → i32, mod2: str → i32). Each module's
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* `caller()` invokes bare `read(...)` with its own arg type. The
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* bare-leaf lookup must resolve to the SAME-MODULE `read`; otherwise
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* the call is a check-time signature mismatch.
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*
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* Pre-fix (flat scope, first-wins by hash order): one of the bare
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* lookups picked the wrong module's `read` and the build failed with
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* "argument type not assignable". Post-fix (scope_lookup_prefer): each
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* bare-leaf inside its own module binds to the same-module entry, both
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* calls type-check, and the build succeeds.
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*
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* Runtime exit codes aren't asserted here because cgen still emits
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* unmangled `TEXT read` labels for both modules and the linker
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* collapses them. Mangling fn labels by module is a separate codegen
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* sweep; this test pins the resolver fix alone.
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*
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* Fixtures live in test/wcc/data/samemodprefer/. Same shape as
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* 696_modtype_leaf_collision.c.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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static int
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runwait(const char *cmd)
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{
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int rc = system(cmd);
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if (rc == -1) return -1;
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if (WIFEXITED(rc)) return WEXITSTATUS(rc);
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return -1;
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}
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static int
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run_pos(const char *driver, const char *fixdir, const char *tag)
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{
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char cmd[2048];
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/* cd into the fixture dir so the driver's source-dir-first
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* import search resolves `use mod1; use mod2;`. */
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snprintf(cmd, sizeof cmd,
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"cd %s && %s build pos.ww >/dev/null 2>&1", fixdir, driver);
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if (runwait(cmd) != 0) {
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fprintf(stderr,
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"samemod_prefer[%s]: pos.ww build failed — bare-leaf "
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"`read` lookup likely cross-bound\n", tag);
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return 1;
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}
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char bin[2048];
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snprintf(bin, sizeof bin, "%s/pos", fixdir);
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unlink(bin);
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return 0;
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}
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int
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main(void)
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{
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const char *bin = getenv("BIN");
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if (!bin) bin = "out/bin";
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char absbin[1024];
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if (bin[0] != '/') {
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char cwd[1024];
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if (getcwd(cwd, sizeof cwd) == NULL) return 1;
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snprintf(absbin, sizeof absbin, "%s/%s", cwd, bin);
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bin = absbin;
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}
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char cdrv[1024];
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snprintf(cdrv, sizeof cdrv, "%s/ww", bin);
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char fixdir[1024];
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if (getcwd(fixdir, sizeof fixdir) == NULL) return 1;
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size_t cwd_n = strlen(fixdir);
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const char *rel = "/test/wcc/data/samemodprefer";
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if (cwd_n + strlen(rel) + 1 >= sizeof fixdir) return 1;
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memcpy(fixdir + cwd_n, rel, strlen(rel) + 1);
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int fail = 0;
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fail += run_pos(cdrv, fixdir, "cstage");
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if (fail) {
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fprintf(stderr,
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"samemod_prefer: %d case(s) failed\n", fail);
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return 1;
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}
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printf("samemod_prefer: 1/1 ok\n");
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return 0;
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}
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