Function cbm_run_win

src/foundation/subprocess.c:229–310

#ifdef _WIN32

static int cbm_run_win(const cbm_proc_opts_t *opts, cbm_proc_result_t *out) {
    const char *bin = opts->bin;
    const char *const default_argv[] = {bin, NULL};
    const char *const *argv = opts->argv ? opts->argv : default_argv;

    char cmdline[8192];
    if (!cbm_build_win_cmdline(cmdline, sizeof(cmdline), argv)) {
        out->outcome = CBM_PROC_SPAWN_FAILED;
        out->exit_code = -1;
        out->term_signal = 0;
        return -1;
    }
    /* Spawn via CreateProcessW with a WIDE command line. CreateProcessA would
     * re-interpret our UTF-8 cmdline bytes through the ANSI code page (CP_ACP),
     * re-mangling a non-ASCII repo path at the parent->worker boundary — so the
     * worker's own wide-argv read could never recover it (#423/#20). */
    wchar_t *wcmd = cbm_utf8_to_wide(cmdline);
    if (!wcmd) {
        out->outcome = CBM_PROC_SPAWN_FAILED;
        out->exit_code = -1;
        out->term_signal = 0;
        return -1;
    }

    HANDLE hlog = INVALID_HANDLE_VALUE;
    STARTUPINFOW si = {.cb = sizeof(si)};
    if (opts->log_file) {
        hlog = CreateFileA(opts->log_file, GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS,
                           FILE_ATTRIBUTE_NORMAL, NULL);
        if (hlog != INVALID_HANDLE_VALUE) {
            si.dwFlags = STARTF_USESTDHANDLES;
            si.hStdError = hlog;
            si.hStdOutput = hlog;
        }
    }

    PROCESS_INFORMATION pi = {0};
    BOOL ok = CreateProcessW(NULL, wcmd, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi);
    free(wcmd);
    if (hlog != INVALID_HANDLE_VALUE) {
        CloseHandle(hlog);
    }
    if (!ok) {
        out->outcome = CBM_PROC_SPAWN_FAILED;
        out->exit_code = -1;
        out->term_signal = 0;
        return -1;
    }

    long tail_pos = 0;
    uint64_t last_activity = cbm_now_ms();
    bool timed_out = false;
    for (;;) {
        DWORD w = WaitForSingleObject(pi.hProcess, 200);
        if (cbm_tail_log(opts->log_file, &tail_pos, opts->on_log_line, opts->log_ud)) {
            last_activity = cbm_now_ms();
        }
        if (w == WAIT_OBJECT_0) {