[PATCH 3/3] Introduce a separate debug objfile iterator

[Tom Tromey]

Sandra> FYI, this series of patches has broken builds with older versions of
Sandra> GCC (we've got 5.2.1 installed on our build system here).  Multiple
Sandra> failures like:

Tom> I think that's a bug in that version of gcc, but gdb has routinely
Tom> worked around it in the past.

[...]

Tom> If you can send me a full list, I can send you a patch to test.

I did a grep and came up with the appended.
If you try it, and it works, I will check it in.

thanks,
Tom

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index 1a566635b2d..2b4445ee185 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -12483,7 +12483,7 @@ create_excep_cond_exprs (struct ada_catchpoint *c,
      because the expression may hold the addresses of multiple symbols
      in some cases.  */
   std::multimap<program_space *, struct bp_location *> loc_map;
-  for (struct bp_location *bl = c->loc; bl != NULL; bl = bl->next)
+  for (bp_location *bl = c->loc; bl != NULL; bl = bl->next)
     loc_map.emplace (bl->pspace, bl);
 
   scoped_restore_current_program_space save_pspace;
diff --git a/gdb/darwin-nat.c b/gdb/darwin-nat.c
index 8282ef27e61..e3368ce6471 100644
--- a/gdb/darwin-nat.c
+++ b/gdb/darwin-nat.c
@@ -1706,7 +1706,7 @@ darwin_attach_pid (struct inferior *inf)
 static struct thread_info *
 thread_info_from_private_thread_info (darwin_thread_info *pti)
 {
-  for (struct thread_info *it : all_threads ())
+  for (thread_info *it : all_threads ())
     {
       darwin_thread_info *iter_pti = get_darwin_thread_info (it);
 
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index b0bdecf96fc..b5ea9e3cc0a 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -15962,7 +15962,7 @@ handle_struct_member_die (struct die_info *child_die, struct type *type,
 	 field for our sole member child.  */
       struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu);
 
-      for (struct die_info *variant_child = child_die->child;
+      for (die_info *variant_child = child_die->child;
 	   variant_child != NULL;
 	   variant_child = sibling_die (variant_child))
 	{
diff --git a/gdb/minsyms.c b/gdb/minsyms.c
index 8037329a862..9d29d880aab 100644
--- a/gdb/minsyms.c
+++ b/gdb/minsyms.c
@@ -721,7 +721,7 @@ lookup_minimal_symbol_by_pc_section (CORE_ADDR pc_in, struct obj_section *sectio
 
   gdb_assert (section != NULL);
 
-  for (struct objfile *objfile : section->objfile->separate_debug_objfiles ())
+  for (objfile *objfile : section->objfile->separate_debug_objfiles ())
     {
       CORE_ADDR pc = pc_in;
 
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index 1b0ea29980d..30823c2d889 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -864,7 +864,7 @@ objfile_relocate (struct objfile *objfile,
 
   changed |= objfile_relocate1 (objfile, new_offsets);
 
-  for (struct objfile *debug_objfile : objfile->separate_debug_objfiles ())
+  for (::objfile *debug_objfile : objfile->separate_debug_objfiles ())
     {
       if (debug_objfile == objfile)
 	continue;
@@ -919,7 +919,7 @@ objfile_rebase (struct objfile *objfile, CORE_ADDR slide)
 {
   int changed = 0;
 
-  for (struct objfile *debug_objfile : objfile->separate_debug_objfiles ())
+  for (::objfile *debug_objfile : objfile->separate_debug_objfiles ())
     changed |= objfile_rebase1 (debug_objfile, slide);
 
   /* Relocate breakpoints as necessary, after things are relocated.  */
@@ -960,7 +960,7 @@ objfile_has_full_symbols (struct objfile *objfile)
 int
 objfile_has_symbols (struct objfile *objfile)
 {
-  for (struct objfile *o : objfile->separate_debug_objfiles ())
+  for (::objfile *o : objfile->separate_debug_objfiles ())
     if (objfile_has_partial_symbols (o) || objfile_has_full_symbols (o))
       return 1;
   return 0;
diff --git a/gdb/ser-tcp.c b/gdb/ser-tcp.c
index 039b0432231..6ba95107918 100644
--- a/gdb/ser-tcp.c
+++ b/gdb/ser-tcp.c
@@ -323,7 +323,7 @@ net_open (struct serial *scb, const char *name)
     {
       got_connrefused = false;
 
-      for (struct addrinfo *iter = ainfo; iter != NULL; iter = iter->ai_next)
+      for (addrinfo *iter = ainfo; iter != NULL; iter = iter->ai_next)
 	{
 	  /* Iterate over the list of possible addresses to connect
 	     to.  For each, we'll try to connect and see if it
diff --git a/gdb/symtab.c b/gdb/symtab.c
index 16e641a830b..0e1f7ead294 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -2246,7 +2246,7 @@ lookup_global_symbol_from_objfile (struct objfile *main_objfile,
 				   const char *name,
 				   const domain_enum domain)
 {
-  for (struct objfile *objfile : main_objfile->separate_debug_objfiles ())
+  for (objfile *objfile : main_objfile->separate_debug_objfiles ())
     {
       struct block_symbol result
         = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain);
@@ -2333,7 +2333,7 @@ lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile,
   else
     main_objfile = objfile;
 
-  for (struct objfile *cur_objfile : main_objfile->separate_debug_objfiles ())
+  for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ())
     {
       struct block_symbol result;