Use checked_static_cast in more places

I looked through all the uses of static_cast<... *> in gdb and
converted many of them to checked_static_cast.

I couldn't test a few of these changes.

gdb/aix-thread.c

@@ -90,7 +90,7 @@ struct aix_thread_info : public private_thread_info
 static aix_thread_info *
 get_aix_thread_info (thread_info *thread)
 {
-  return static_cast<aix_thread_info *> (thread->priv.get ());
+  return gdb::checked_static_cast<aix_thread_info *> (thread->priv.get ());
 }
 
 /* Information about a thread of which libpthdebug is aware.  */

gdb/breakpoint.c

@@ -997,7 +997,7 @@ set_breakpoint_condition (struct breakpoint *b, const char *exp,
       b->cond_string.reset ();
 
       if (is_watchpoint (b))
-	static_cast<watchpoint *> (b)->cond_exp.reset ();
+	gdb::checked_static_cast<watchpoint *> (b)->cond_exp.reset ();
       else
 	{
 	  int loc_num = 1;
@@ -1029,7 +1029,7 @@ set_breakpoint_condition (struct breakpoint *b, const char *exp,
 	  expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker);
 	  if (*arg != 0)
 	    error (_("Junk at end of expression"));
-	  watchpoint *w = static_cast<watchpoint *> (b);
+	  watchpoint *w = gdb::checked_static_cast<watchpoint *> (b);
 	  w->cond_exp = std::move (new_exp);
 	  w->cond_exp_valid_block = tracker.block ();
 	}
@@ -8312,7 +8312,7 @@ code_breakpoint::code_breakpoint (struct gdbarch *gdbarch_,
   if (type == bp_static_tracepoint
       || type == bp_static_marker_tracepoint)
     {
-      auto *t = static_cast<struct tracepoint *> (this);
+      auto *t = gdb::checked_static_cast<struct tracepoint *> (this);
       struct static_tracepoint_marker marker;
 
       if (strace_marker_p (this))
@@ -13502,7 +13502,8 @@ insert_single_step_breakpoint (struct gdbarch *gdbarch,
   sal.explicit_pc = 1;
 
   auto *ss_bp
-    = static_cast<momentary_breakpoint *> (tp->control.single_step_breakpoints);
+    = (gdb::checked_static_cast<momentary_breakpoint *>
+       (tp->control.single_step_breakpoints));
   ss_bp->add_location (sal);
 
   update_global_location_list (UGLL_INSERT);

gdb/darwin-nat.h

@@ -154,7 +154,7 @@ struct darwin_exception_info
 static inline darwin_thread_info *
 get_darwin_thread_info (class thread_info *thread)
 {
-  return static_cast<darwin_thread_info *> (thread->priv.get ());
+  return gdb::checked_static_cast<darwin_thread_info *> (thread->priv.get ());
 }
 
 /* Describe an inferior.  */
@@ -188,7 +188,7 @@ struct darwin_inferior : public private_inferior
 static inline darwin_inferior *
 get_darwin_inferior (inferior *inf)
 {
-  return static_cast<darwin_inferior *> (inf->priv.get ());
+  return gdb::checked_static_cast<darwin_inferior *> (inf->priv.get ());
 }
 
 /* Exception port.  */

gdb/dwarf2/read.c

@@ -3102,7 +3102,7 @@ dwarf2_gdb_index::dump (struct objfile *objfile)
 {
   dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile);
 
-  mapped_index *index = (static_cast<mapped_index *>
+  mapped_index *index = (gdb::checked_static_cast<mapped_index *>
 			 (per_objfile->per_bfd->index_table.get ()));
   gdb_printf (".gdb_index: version %d\n", index->version);
   gdb_printf ("\n");
@@ -18576,11 +18576,11 @@ dwarf2_per_cu_data *
 cooked_index_functions::find_per_cu (dwarf2_per_bfd *per_bfd,
 				     CORE_ADDR adjusted_pc)
 {
-  cooked_index_vector *table
-    = (static_cast<cooked_index_vector *>
-       (per_bfd->index_table.get ()));
-  if (table == nullptr)
+  if (per_bfd->index_table == nullptr)
     return nullptr;
+  cooked_index_vector *table
+    = (gdb::checked_static_cast<cooked_index_vector *>
+       (per_bfd->index_table.get ()));
   return table->lookup (adjusted_pc);
 }
 
@@ -18597,7 +18597,7 @@ cooked_index_functions::find_compunit_symtab_by_address
 
   CORE_ADDR baseaddr = objfile->data_section_offset ();
   cooked_index_vector *table
-    = (static_cast<cooked_index_vector *>
+    = (gdb::checked_static_cast<cooked_index_vector *>
        (per_objfile->per_bfd->index_table.get ()));
   dwarf2_per_cu_data *per_cu = table->lookup (address - baseaddr);
   if (per_cu == nullptr)
@@ -18625,7 +18625,7 @@ cooked_index_functions::expand_matching_symbols
     = lang->get_symbol_name_matcher (lookup_name);
 
   cooked_index_vector *table
-    = (static_cast<cooked_index_vector *>
+    = (gdb::checked_static_cast<cooked_index_vector *>
        (per_objfile->per_bfd->index_table.get ()));
   for (const cooked_index_entry *entry : table->all_entries ())
     {
@@ -18657,7 +18657,7 @@ cooked_index_functions::expand_symtabs_matching
     return true;
 
   cooked_index_vector *table
-    = (static_cast<cooked_index_vector *>
+    = (gdb::checked_static_cast<cooked_index_vector *>
        (per_objfile->per_bfd->index_table.get ()));
   table->wait ();
 

gdb/linux-thread-db.c

@@ -317,7 +317,7 @@ struct thread_db_thread_info : public private_thread_info
 static thread_db_thread_info *
 get_thread_db_thread_info (thread_info *thread)
 {
-  return static_cast<thread_db_thread_info *> (thread->priv.get ());
+  return gdb::checked_static_cast<thread_db_thread_info *> (thread->priv.get ());
 }
 
 static const char *

gdb/location.c

@@ -221,7 +221,7 @@ const linespec_location_spec *
 as_linespec_location_spec (const location_spec *locspec)
 {
   gdb_assert (locspec->type () == LINESPEC_LOCATION_SPEC);
-  return static_cast<const linespec_location_spec *> (locspec);
+  return gdb::checked_static_cast<const linespec_location_spec *> (locspec);
 }
 
 /* See description in location.h.  */
@@ -240,7 +240,7 @@ const address_location_spec *
 as_address_location_spec (const location_spec *locspec)
 {
   gdb_assert (locspec->type () == ADDRESS_LOCATION_SPEC);
-  return static_cast<const address_location_spec *> (locspec);
+  return gdb::checked_static_cast<const address_location_spec *> (locspec);
 }
 
 /* See description in location.h.  */
@@ -257,7 +257,7 @@ const probe_location_spec *
 as_probe_location_spec (const location_spec *locspec)
 {
   gdb_assert (locspec->type () == PROBE_LOCATION_SPEC);
-  return static_cast<const probe_location_spec *> (locspec);
+  return gdb::checked_static_cast<const probe_location_spec *> (locspec);
 }
 
 /* See description in location.h.  */
@@ -266,7 +266,7 @@ const explicit_location_spec *
 as_explicit_location_spec (const location_spec *locspec)
 {
   gdb_assert (locspec->type () == EXPLICIT_LOCATION_SPEC);
-  return static_cast<const explicit_location_spec *> (locspec);
+  return gdb::checked_static_cast<const explicit_location_spec *> (locspec);
 }
 
 /* See description in location.h.  */
@@ -275,7 +275,7 @@ explicit_location_spec *
 as_explicit_location_spec (location_spec *locspec)
 {
   gdb_assert (locspec->type () == EXPLICIT_LOCATION_SPEC);
-  return static_cast<explicit_location_spec *> (locspec);
+  return gdb::checked_static_cast<explicit_location_spec *> (locspec);
 }
 
 /* Return a string representation of the explicit location spec in

gdb/nto-tdep.h

@@ -26,6 +26,7 @@
 #include "osabi.h"
 #include "regset.h"
 #include "gdbthread.h"
+#include "gdbsupport/gdb-checked-static-cast.h"
 
 /* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */
 
@@ -145,7 +146,7 @@ struct nto_thread_info : public private_thread_info
 static inline nto_thread_info *
 get_nto_thread_info (thread_info *thread)
 {
-  return static_cast<nto_thread_info *> (thread->priv.get ());
+  return gdb::checked_static_cast<nto_thread_info *> (thread->priv.get ());
 }
 
 /* Per-inferior data, common for both procfs and remote.  */

gdb/process-stratum-target.h

@@ -23,6 +23,7 @@
 #include "target.h"
 #include <set>
 #include "gdbsupport/intrusive_list.h"
+#include "gdbsupport/gdb-checked-static-cast.h"
 #include "gdbthread.h"
 
 /* Abstract base class inherited by all process_stratum targets.  */
@@ -160,7 +161,7 @@ static inline process_stratum_target *
 as_process_stratum_target (target_ops *target)
 {
   gdb_assert (target->stratum () == process_stratum);
-  return static_cast<process_stratum_target *> (target);
+  return gdb::checked_static_cast<process_stratum_target *> (target);
 }
 
 /* Return a collection of targets that have non-exited inferiors.  */

gdb/remote.c

@@ -2694,7 +2694,7 @@ get_remote_thread_info (thread_info *thread)
   if (thread->priv == NULL)
     thread->priv.reset (new remote_thread_info);
 
-  return static_cast<remote_thread_info *> (thread->priv.get ());
+  return gdb::checked_static_cast<remote_thread_info *> (thread->priv.get ());
 }
 
 /* Return PTID's private thread data, creating it if necessary.  */
@@ -6611,7 +6611,7 @@ get_remote_inferior (inferior *inf)
   if (inf->priv == NULL)
     inf->priv.reset (new remote_inferior);
 
-  return static_cast<remote_inferior *> (inf->priv.get ());
+  return gdb::checked_static_cast<remote_inferior *> (inf->priv.get ());
 }
 
 /* Class used to track the construction of a vCont packet in the