Fix push parsing memory leak reported by Brandon Lucia at

[bison.git] / src / main.c

diff --git a/src/main.c b/src/main.c
index 602d4db6b72e9f94ac8699fc8b296333aa4c0ed7..8463608360f942697834a705786417934f624472 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,7 @@
-/* Top level entry point of bison,
-   Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002
-   Free Software Foundation, Inc.
+/* Top level entry point of Bison.
+
+   Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002, 2004,
+   2005, 2006, 2007 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -16,33 +17,39 @@
 
    You should have received a copy of the GNU General Public License
    along with Bison; see the file COPYING.  If not, write to
-   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
 
+#include <config.h>
 #include "system.h"
-#include "bitset_stats.h"
-#include "bitset.h"
-#include "getargs.h"
-#include "symtab.h"
-#include "gram.h"
-#include "files.h"
+
+#include <bitset_stats.h>
+#include <bitset.h>
+#include <configmake.h>
+#include <quotearg.h>
+#include <timevar.h>
+
+#include "LR0.h"
 #include "complain.h"
+#include "conflicts.h"
 #include "derives.h"
-#include "tables.h"
-#include "output.h"
-#include "reader.h"
+#include "files.h"
+#include "getargs.h"
+#include "gram.h"
 #include "lalr.h"
-#include "reduce.h"
+#include "muscle_tab.h"
 #include "nullable.h"
+#include "output.h"
 #include "print.h"
-#include "LR0.h"
-#include "conflicts.h"
 #include "print_graph.h"
-#include "muscle_tab.h"
-
-/* The name this program was run with, for messages.  */
-char *program_name;
+#include "reader.h"
+#include "reduce.h"
+#include "scan-code.h"
+#include "scan-gram.h"
+#include "scan-skel.h"
+#include "symtab.h"
+#include "tables.h"
+#include "uniqstr.h"
 
 
 
@@ -51,12 +58,15 @@ main (int argc, char *argv[])
 {
   program_name = argv[0];
   setlocale (LC_ALL, "");
-  bindtextdomain (PACKAGE, LOCALEDIR);
-  textdomain (PACKAGE);
+  (void) bindtextdomain (PACKAGE, LOCALEDIR);
+  (void) bindtextdomain ("bison-runtime", LOCALEDIR);
+  (void) textdomain (PACKAGE);
+
+  uniqstrs_new ();
 
   getargs (argc, argv);
 
-  time_report = trace_flag & trace_time;
+  timevar_report = trace_flag & trace_time;
   init_timevar ();
   timevar_start (TV_TOTAL);
 
@@ -73,8 +83,8 @@ main (int argc, char *argv[])
   reader ();
   timevar_pop (TV_READER);
 
-  if (complain_message_count)
-    exit (1);
+  if (complaint_issued)
+    goto finish;
 
   /* Find useless nonterminals and productions and reduce the grammar. */
   timevar_push (TV_REDUCE);
@@ -105,6 +115,14 @@ main (int argc, char *argv[])
      declarations.  */
   timevar_push (TV_CONFLICTS);
   conflicts_solve ();
+  {
+    state_number *old_to_new = xnmalloc (nstates, sizeof *old_to_new);
+    state_number nstates_old = nstates;
+    state_remove_unreachable_states (old_to_new);
+    lalr_update_state_numbers (old_to_new, nstates_old);
+    conflicts_update_state_numbers (old_to_new, nstates_old);
+    free (old_to_new);
+  }
   conflicts_print ();
   timevar_pop (TV_CONFLICTS);
 
@@ -127,7 +145,7 @@ main (int argc, char *argv[])
       timevar_pop (TV_REPORT);
     }
 
-  /* Output the VCG graph.  */
+  /* Output the graph.  */
   if (graph_flag)
     {
       timevar_push (TV_GRAPH);
@@ -137,10 +155,10 @@ main (int argc, char *argv[])
 
   /* Stop if there were errors, to avoid trashing previous output
      files.  */
-  if (complain_message_count)
-    exit (1);
+  if (complaint_issued)
+    goto finish;
 
-  /* Lookaheads are no longer needed. */
+  /* Lookahead tokens are no longer needed. */
   timevar_push (TV_FREE);
   lalr_free ();
   timevar_pop (TV_FREE);
@@ -158,24 +176,26 @@ main (int argc, char *argv[])
   reduce_free ();
   conflicts_free ();
   grammar_free ();
+  output_file_names_free ();
 
   /* The scanner memory cannot be released right after parsing, as it
      contains things such as user actions, prologue, epilogue etc.  */
-  scanner_free ();
+  gram_scanner_free ();
   muscle_free ();
-  /* If using alloca.c, flush the alloca'ed memory for the benefit of
-     people running Bison as a library in IDEs.  */
-#if C_ALLOCA
-  alloca (0);
-#endif
+  uniqstrs_free ();
+  code_scanner_free ();
+  skel_scanner_free ();
+  quotearg_free ();
   timevar_pop (TV_FREE);
 
   if (trace_flag & trace_bitsets)
     bitset_stats_dump (stderr);
 
+ finish:
+
   /* Stop timing and print the times.  */
   timevar_stop (TV_TOTAL);
   timevar_print (stderr);
 
-  return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS;
+  return complaint_issued ? EXIT_FAILURE : EXIT_SUCCESS;
 }