move isatty after log_fd is set

diff --git a/logs.cc b/logs.cc
index ac9fd32..fcb6be7 100644 (file)
--- a/logs.cc
+++ b/logs.cc
@@ -48,11 +48,11 @@ static enum llevel_t _log_level = INFO;
 static bool _log_set = false;
 
 __attribute__((constructor)) static void log_init(void) {
-       _log_fd_isatty = isatty(_log_fd);
        _log_fd = fcntl(_log_fd, F_DUPFD_CLOEXEC, 0);
        if (_log_fd == -1) {
                _log_fd = STDERR_FILENO;
        }
+       _log_fd_isatty = isatty(_log_fd);
 }
 
 bool logSet() {