gdb/gdb-bz606185-obstack-1of5.patch

commit 78c144e8c3ae7bb36d632f6bfaaaad9c97199ce6
Author: cmoller <cmoller>
Date:   Tue Apr 20 20:22:09 2010 +0000

    PR 10867
    * cp-valprint.c (global): Adding new static array recursion
    detection obstack.
    (cp_print_value_fields, cp_print_static_field): Added new static
    array recursion detection code.
    * gdb.cp/Makefile.in  (EXECUTABLES): Added pr10687
    * gdb.cp/pr10687.cc: New file.
    * gdb.cp/pr10687.exp: New file

### a/gdb/ChangeLog
### b/gdb/ChangeLog
## -1,3 +1,12 @@
+2010-04-20  Chris Moller  <cmoller@redhat.com>
+	
+	PR 10867
+
+	* cp-valprint.c (global): Adding new static array recursion
+	detection obstack.
+	(cp_print_value_fields, cp_print_static_field): Added new static
+	array recursion detection code.
+
 2010-04-20  Mark Kettenis  <kettenis@gnu.org>
 
 	* i386-linux-tdep.c (i386_linux_regset_sections): Size of the
Index: gdb-7.1/gdb/cp-valprint.c
===================================================================
--- gdb-7.1.orig/gdb/cp-valprint.c	2010-02-08 19:04:16.000000000 +0100
+++ gdb-7.1/gdb/cp-valprint.c	2010-06-28 20:21:53.000000000 +0200
@@ -71,6 +71,7 @@ show_static_field_print (struct ui_file 
 
 static struct obstack dont_print_vb_obstack;
 static struct obstack dont_print_statmem_obstack;
+static struct obstack dont_print_stat_array_obstack;
 
 extern void _initialize_cp_valprint (void);
 
@@ -155,12 +156,17 @@ cp_print_value_fields (struct type *type
 {
   int i, len, n_baseclasses;
   int fields_seen = 0;
+  static int last_set_recurse = -1;
 
   CHECK_TYPEDEF (type);
   
-  if (recurse == 0
-      && obstack_object_size (&dont_print_statmem_obstack) > 0)
-    obstack_free (&dont_print_statmem_obstack, NULL);
+  if (recurse == 0)
+    {
+      if (obstack_object_size (&dont_print_statmem_obstack) > 0)
+	obstack_free (&dont_print_statmem_obstack, NULL);
+      if (obstack_object_size (&dont_print_stat_array_obstack) > 0)
+	obstack_free (&dont_print_stat_array_obstack, NULL);
+    }
 
   fprintf_filtered (stream, "{");
   len = TYPE_NFIELDS (type);
@@ -181,12 +187,20 @@ cp_print_value_fields (struct type *type
   else
     {
       void *statmem_obstack_top = NULL;
+      void *stat_array_obstack_top = NULL;
       
       if (dont_print_statmem == 0)
 	{
 	  /* Set the current printed-statics stack top.  */
 	  statmem_obstack_top
 	    = obstack_next_free (&dont_print_statmem_obstack);
+
+	  if (last_set_recurse != recurse)
+	    {
+	      stat_array_obstack_top
+		= obstack_next_free (&dont_print_stat_array_obstack);
+	      last_set_recurse = recurse;
+	    }
 	}
 
       for (i = n_baseclasses; i < len; i++)
@@ -307,9 +321,16 @@ cp_print_value_fields (struct type *type
 
       if (dont_print_statmem == 0)
 	{
-	  /* In effect, a pop of the printed-statics stack.  */
 	  if (obstack_object_size (&dont_print_statmem_obstack) > 0) 
 	    obstack_free (&dont_print_statmem_obstack, statmem_obstack_top);
+
+	  if (last_set_recurse != recurse)
+	    {
+	      if (obstack_object_size (&dont_print_stat_array_obstack) > 0) 
+		obstack_free (&dont_print_stat_array_obstack,
+			      stat_array_obstack_top);
+	      last_set_recurse = -1;
+	    }
 	}
 
       if (options->pretty)
@@ -508,6 +529,7 @@ cp_print_static_field (struct type *type
 		       const struct value_print_options *options)
 {
   struct value_print_options opts;
+  
   if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
     {
       CORE_ADDR *first_dont_print;
@@ -542,6 +564,32 @@ cp_print_static_field (struct type *type
       return;
     }
 
+  if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
+    {
+      struct type **first_dont_print;
+      int i;
+      struct type *target_type = TYPE_TARGET_TYPE (type);
+
+      first_dont_print
+	= (struct type **) obstack_base (&dont_print_stat_array_obstack);
+      i = obstack_object_size (&dont_print_stat_array_obstack)
+	/ sizeof (CORE_ADDR);
+
+      while (--i >= 0)
+	{
+	  if (target_type == first_dont_print[i])
+	    {
+	      fputs_filtered ("<same as static member of an already"
+			      " seen type>",
+			      stream);
+	      return;
+	    }
+	}
+
+      obstack_grow (&dont_print_stat_array_obstack, (char *) &target_type,
+		    sizeof (struct type *));
+    }
+
   opts = *options;
   opts.deref_ref = 0;
   val_print (type, value_contents_all (val), 
@@ -672,6 +720,7 @@ Show printing of object's derived type b
 			   show_objectprint,
 			   &setprintlist, &showprintlist);
 
+  obstack_begin (&dont_print_stat_array_obstack, 32 * sizeof (CORE_ADDR));
   obstack_begin (&dont_print_statmem_obstack, 32 * sizeof (CORE_ADDR));
   obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *));
 }
Index: gdb-7.1/gdb/testsuite/gdb.cp/pr10687.cc
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb-7.1/gdb/testsuite/gdb.cp/pr10687.cc	2010-06-28 20:21:53.000000000 +0200
@@ -0,0 +1,24 @@
+class vec2 
+{
+  public:
+    vec2() { _v[0] = _v[1] = 0; }
+    vec2(int x, int y) { _v[0] = x; _v[1] = y; }
+    static vec2 axis[2];
+    static vec2 axis6[6];
+  private:
+    int _v[2];
+};
+
+vec2 vec2::axis[2] = { vec2(1,0), vec2(0,1) };
+vec2 vec2::axis6[6] = { 
+  vec2(1,0), vec2(0,1),
+  vec2(2,0), vec2(0,2),
+  vec2(3,0), vec2(0,3) 
+};
+
+int main(int argc, char*argv[])
+{
+  vec2 a;
+
+  return 0;  // marker
+}
Index: gdb-7.1/gdb/testsuite/gdb.cp/pr10687.exp
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb-7.1/gdb/testsuite/gdb.cp/pr10687.exp	2010-06-28 20:21:53.000000000 +0200
@@ -0,0 +1,31 @@
+#Copyright 2010 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set testfile pr10687
+set srcfile ${testfile}.cc
+if [prepare_for_testing $testfile.exp $testfile $srcfile {debug c++}] {
+    return -1
+}
+
+if ![runto_main] then {
+    fail "Can't run to main"
+    return
+}
+
+gdb_breakpoint [gdb_get_line_number "marker"]
+gdb_continue_to_breakpoint "marker"
+
+gdb_test "p a" "{static axis = {{static axis = <same as static member of an already.*"
+