run the "economy mode" repl any time Base._start is not defined

ui/repl.c

@@ -41,7 +41,6 @@ extern "C" {
 static int lisp_prompt = 0;
 static int codecov = JL_LOG_NONE;
 static int malloclog= JL_LOG_NONE;
-static char *program = NULL;
 static int imagepathspecified = 0;
 
 static const char usage[] = "julia [options] [program] [args...]\n";
@@ -345,13 +344,9 @@ void parse_opts(int *argcp, char ***argvp)
  optind -= skip;
  *argvp += optind;
  *argcp -= optind;
- if (jl_options.image_file==NULL && *argcp > 0) {
- if (strcmp((*argvp)[0], "-"))
- program = (*argvp)[0];
- }
 }
 
-static int exec_program(void)
+static int exec_program(char *program)
 {
  int err = 0;
  again: ;
@@ -427,13 +422,6 @@ static int true_main(int argc, char *argv[])
  }
  }
 
- // run program if specified, otherwise enter REPL
- if (program) {
- int ret = exec_program();
- uv_tty_reset_mode();
- return ret;
- }
-
  jl_function_t *start_client = jl_base_module ?
  (jl_function_t*)jl_get_global(jl_base_module, jl_symbol("_start")) : NULL;
 
@@ -442,11 +430,19 @@ static int true_main(int argc, char *argv[])
  return 0;
  }
 
+ // run program if specified, otherwise enter REPL
+ if (argc > 0) {
+ if (strcmp(argv[0], "-")) {
+ return exec_program(argv[0]);
+ }
+ }
+
  ios_puts("warning: Base._start not defined, falling back to economy mode repl.\n", ios_stdout);
  if (!jl_errorexception_type)
  ios_puts("warning: jl_errorexception_type not defined; any errors will be fatal.\n", ios_stdout);
+
  while (!ios_eof(ios_stdin)) {
- char *line = NULL;
+ char *volatile line = NULL;
  JL_TRY {
  ios_puts("\njulia> ", ios_stdout);
  ios_flush(ios_stdout);