* Makefile.in (objfiles.o, symfile.o): Update.

	* objfiles.c: Include "expression.h" and "parser-defs.h".
	(free_objfile): Clear global blocks.
	* symfile.c: Include "parser-defs.h".
	(clear_symtab_users): Clear global blocks.

4 files changed, 28 insertions, 2 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 5b829c2d95..239b96c0e8 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2006-08-08  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	* Makefile.in (objfiles.o, symfile.o): Update.
+	* objfiles.c: Include "expression.h" and "parser-defs.h".
+	(free_objfile): Clear global blocks.
+	* symfile.c: Include "parser-defs.h".
+	(clear_symtab_users): Clear global blocks.
+
 2006-08-08  Thiemo Seufer  <ths@mips.com>
 
 	* breakpoint.c (update_breakpoints_after_exec): Fix type mismatch.
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index f114df8105..25713ef9b3 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -2402,7 +2402,8 @@ objc-lang.o: objc-lang.c $(defs_h) $(symtab_h) $(gdbtypes_h) $(expression_h) \
 objfiles.o: objfiles.c $(defs_h) $(bfd_h) $(symtab_h) $(symfile_h) \
 	$(objfiles_h) $(gdb_stabs_h) $(target_h) $(bcache_h) $(mdebugread_h) \
 	$(gdb_assert_h) $(gdb_stat_h) $(gdb_obstack_h) $(gdb_string_h) \
-	$(hashtab_h) $(breakpoint_h) $(block_h) $(dictionary_h) $(source_h)
+	$(hashtab_h) $(breakpoint_h) $(block_h) $(dictionary_h) $(source_h) \
+	$(parser_defs_h) $(expression_h)
 observer.o: observer.c $(defs_h) $(observer_h) $(command_h) $(gdbcmd_h) \
 	$(observer_inc)
 obsd-tdep.o: obsd-tdep.c $(defs_h) $(frame_h) $(symtab_h) $(obsd_tdep_h)
@@ -2722,7 +2723,8 @@ symfile.o: symfile.c $(defs_h) $(bfdlink_h) $(symtab_h) $(gdbtypes_h) \
 	$(complaints_h) $(demangle_h) $(inferior_h) $(filenames_h) \
 	$(gdb_stabs_h) $(gdb_obstack_h) $(completer_h) $(bcache_h) \
 	$(hashtab_h) $(readline_h) $(gdb_assert_h) $(block_h) \
-	$(gdb_string_h) $(gdb_stat_h) $(observer_h) $(exec_h)
+	$(gdb_string_h) $(gdb_stat_h) $(observer_h) $(exec_h) \
+	$(parser_defs_h)
 symfile-mem.o: symfile-mem.c $(defs_h) $(symtab_h) $(gdbcore_h) \
 	$(objfiles_h) $(exceptions_h) $(gdbcmd_h) $(target_h) $(value_h) \
 	$(symfile_h) $(observer_h) $(auxv_h) $(elf_common_h)
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index 3419c6dfa2..a3af5a41f1 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -34,6 +34,9 @@
 #include "target.h"
 #include "bcache.h"
 #include "mdebugread.h"
+#include "expression.h"
+#include "parser-defs.h"
+
 #include "gdb_assert.h"
 #include <sys/types.h>
 #include "gdb_stat.h"
@@ -441,6 +444,12 @@ free_objfile (struct objfile *objfile)
      for example), so we need to call this here.  */
   clear_pc_function_cache ();
 
+  /* Clear globals which might have pointed into a removed objfile.
+     FIXME: It's not clear which of these are supposed to persist
+     between expressions and which ought to be reset each time.  */
+  expression_context_block = NULL;
+  innermost_block = NULL;
+
   /* Check to see if the current_source_symtab belongs to this objfile,
      and if so, call clear_current_source_symtab_and_line. */
 
diff --git a/gdb/symfile.c b/gdb/symfile.c
index 396be8f00e..9d89f83f6f 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -51,6 +51,7 @@
 #include "block.h"
 #include "observer.h"
 #include "exec.h"
+#include "parser-defs.h"
 
 #include <sys/types.h>
 #include <fcntl.h>
@@ -2518,6 +2519,12 @@ clear_symtab_users (void)
   clear_pc_function_cache ();
   if (deprecated_target_new_objfile_hook)
     deprecated_target_new_objfile_hook (NULL);
+
+  /* Clear globals which might have pointed into a removed objfile.
+     FIXME: It's not clear which of these are supposed to persist
+     between expressions and which ought to be reset each time.  */
+  expression_context_block = NULL;
+  innermost_block = NULL;
 }
 
 static void