(main): Use exit to exit with failure.

[bison.git] / src / main.c

diff --git a/src/main.c b/src/main.c
index 6b73f9eb67bb37c962f74fd624f1c8981d36549f..dc28693f11971c57806ed2f56a65a1e5cde63569 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,5 @@
 /* Top level entry point of bison,
-   Copyright 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002
+   Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002
    Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -51,8 +51,8 @@ main (int argc, char *argv[])
 {
   program_name = argv[0];
   setlocale (LC_ALL, "");
-  bindtextdomain (PACKAGE, LOCALEDIR);
-  textdomain (PACKAGE);
+  (void) bindtextdomain (PACKAGE, LOCALEDIR);
+  (void) textdomain (PACKAGE);
 
   getargs (argc, argv);
 
@@ -73,8 +73,8 @@ main (int argc, char *argv[])
   reader ();
   timevar_pop (TV_READER);
 
-  if (complain_message_count)
-    exit (1);
+  if (complaint_issued)
+    exit (EXIT_FAILURE);
 
   /* Find useless nonterminals and productions and reduce the grammar. */
   timevar_push (TV_REDUCE);
@@ -84,8 +84,8 @@ main (int argc, char *argv[])
   /* Record other info about the grammar.  In files derives and
      nullable.  */
   timevar_push (TV_SETS);
-  set_derives ();
-  set_nullable ();
+  derives_compute ();
+  nullable_compute ();
   timevar_pop (TV_SETS);
 
   /* Convert to nondeterministic finite state machine.  In file LR0.
@@ -108,6 +108,14 @@ main (int argc, char *argv[])
   conflicts_print ();
   timevar_pop (TV_CONFLICTS);
 
+  /* Compute the parser tables.  */
+  timevar_push (TV_ACTIONS);
+  tables_generate ();
+  timevar_pop (TV_ACTIONS);
+
+  grammar_rules_never_reduced_report
+    (_("rule never reduced because of conflicts"));
+
   /* Output file names. */
   compute_output_file_names ();
 
@@ -119,11 +127,6 @@ main (int argc, char *argv[])
       timevar_pop (TV_REPORT);
     }
 
-  /* Stop if there were errors, to avoid trashing previous output
-     files.  */
-  if (complain_message_count)
-    exit (1);
-
   /* Output the VCG graph.  */
   if (graph_flag)
     {
@@ -132,10 +135,15 @@ main (int argc, char *argv[])
       timevar_pop (TV_GRAPH);
     }
 
-  /* Compute the parser tables.  */
-  timevar_push (TV_ACTIONS);
-  tables_generate ();
-  timevar_pop (TV_ACTIONS);
+  /* Stop if there were errors, to avoid trashing previous output
+     files.  */
+  if (complaint_issued)
+    exit (EXIT_FAILURE);
+
+  /* Lookaheads are no longer needed. */
+  timevar_push (TV_FREE);
+  lalr_free ();
+  timevar_pop (TV_FREE);
 
   /* Output the tables and the parser to ftable.  In file output.  */
   timevar_push (TV_PARSER);
@@ -143,12 +151,12 @@ main (int argc, char *argv[])
   timevar_pop (TV_PARSER);
 
   timevar_push (TV_FREE);
+  nullable_free ();
+  derives_free ();
   tables_free ();
   states_free ();
   reduce_free ();
   conflicts_free ();
-  free_nullable ();
-  free_derives ();
   grammar_free ();
 
   /* The scanner memory cannot be released right after parsing, as it
@@ -169,5 +177,10 @@ main (int argc, char *argv[])
   timevar_stop (TV_TOTAL);
   timevar_print (stderr);
 
-  return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS;
+  /* Some ancient SunOS versions exit (0) if main returns, so use
+     `exit' to exit with nonzero status.  */
+  if (complaint_issued)
+    exit (EXIT_FAILURE);
+
+  return EXIT_SUCCESS;
 }