[RFA 39/42] Parameterize cp_scan_for_anonymous_namespaces

[Tom Tromey <tom@tromey.com>]

This changes cp_scan_for_anonymous_namespaces to use the
buildsym_compunit API, rather than the function-based API.

2018-05-22  Tom Tromey  <tom@tromey.com>

	* stabsread.c (define_symbol): Update.
	* legacy-buildsym.h (get_buildsym_compunit): Declare.
	* dwarf2read.c (new_symbol): Update.
	* cp-support.h (cp_scan_for_anonymous_namespaces): Update.
	* cp-namespace.c: Include buildsym.h.
	(cp_scan_for_anonymous_namespaces): Add "compunit" parameter.
	* buildsym.c (get_buildsym_compunit): New function.
---
 gdb/ChangeLog         | 10 ++++++++++
 gdb/buildsym.c        |  7 +++++++
 gdb/cp-namespace.c    | 11 ++++++-----
 gdb/cp-support.h      |  4 +++-
 gdb/dwarf2read.c      |  3 ++-
 gdb/legacy-buildsym.h |  4 ++++
 gdb/stabsread.c       |  3 ++-
 7 files changed, 34 insertions(+), 8 deletions(-)

diff --git a/gdb/buildsym.c b/gdb/buildsym.c
index 3e3170f0ee..d9a0e02653 100644
--- a/gdb/buildsym.c
+++ b/gdb/buildsym.c
@@ -1634,3 +1634,10 @@ record_line (struct subfile *subfile, int line, CORE_ADDR pc)
   gdb_assert (buildsym_compunit != nullptr);
   buildsym_compunit->record_line (subfile, line, pc);
 }
+
+struct buildsym_compunit *
+get_buildsym_compunit ()
+{
+  gdb_assert (buildsym_compunit != nullptr);
+  return buildsym_compunit;
+}
diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
index 41affca3a8..03f75ae486 100644
--- a/gdb/cp-namespace.c
+++ b/gdb/cp-namespace.c
@@ -29,7 +29,7 @@
 #include "dictionary.h"
 #include "command.h"
 #include "frame.h"
-#include "legacy-buildsym.h"
+#include "buildsym.h"
 #include "language.h"
 #include "namespace.h"
 #include <string>
@@ -50,7 +50,8 @@ static struct type *cp_lookup_transparent_type_loop (const char *name,
    anonymous namespace; if so, add an appropriate using directive.  */
 
 void
-cp_scan_for_anonymous_namespaces (const struct symbol *const symbol,
+cp_scan_for_anonymous_namespaces (struct buildsym_compunit *compunit,
+				  const struct symbol *const symbol,
 				  struct objfile *const objfile)
 {
   if (SYMBOL_DEMANGLED_NAME (symbol) != NULL)
@@ -94,9 +95,9 @@ cp_scan_for_anonymous_namespaces (const struct symbol *const symbol,
 		 namespace given by the previous component if there is
 		 one, or to the global namespace if there isn't.  */
 	      std::vector<const char *> excludes;
-	      add_using_directive (get_local_using_directives (),
-				   dest, src, NULL, NULL, excludes, 1,
-				   &objfile->objfile_obstack);
+	      add_using_directive (compunit->get_local_using_directives (),
+				   dest, src, NULL, NULL, excludes,
+				   1, &objfile->objfile_obstack);
 	    }
 	  /* The "+ 2" is for the "::".  */
 	  previous_component = next_component + 2;
diff --git a/gdb/cp-support.h b/gdb/cp-support.h
index 44725818e9..0739dcdf5f 100644
--- a/gdb/cp-support.h
+++ b/gdb/cp-support.h
@@ -33,6 +33,7 @@
 
 struct symbol;
 struct block;
+struct buildsym_compunit;
 struct objfile;
 struct type;
 struct demangle_component;
@@ -132,7 +133,8 @@ extern symbol_name_matcher_ftype *cp_get_symbol_name_matcher
 
 extern int cp_is_in_anonymous (const char *symbol_name);
 
-extern void cp_scan_for_anonymous_namespaces (const struct symbol *symbol,
+extern void cp_scan_for_anonymous_namespaces (struct buildsym_compunit *,
+					      const struct symbol *symbol,
 					      struct objfile *objfile);
 
 extern struct block_symbol cp_lookup_symbol_nonlocal
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 75a121073c..504e8e4e6c 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -21596,7 +21596,8 @@ new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu,
 	 namespaces based on the demangled name.  */
       if (!cu->processing_has_namespace_info
 	  && cu->language == language_cplus)
-	cp_scan_for_anonymous_namespaces (sym, objfile);
+	cp_scan_for_anonymous_namespaces (get_buildsym_compunit (), sym,
+					  objfile);
     }
   return (sym);
 }
diff --git a/gdb/legacy-buildsym.h b/gdb/legacy-buildsym.h
index 66a3ea8cd0..5d405ee881 100644
--- a/gdb/legacy-buildsym.h
+++ b/gdb/legacy-buildsym.h
@@ -207,4 +207,8 @@ extern struct pending **get_file_symbols ();
 
 extern struct pending **get_global_symbols ();
 
+/* Return the current buildsym_compunit.  */
+
+extern struct buildsym_compunit *get_buildsym_compunit ();
+
 #endif /* defined (LEGACY_BUILDSYM_H) */
diff --git a/gdb/stabsread.c b/gdb/stabsread.c
index 62221d03cf..481948117b 100644
--- a/gdb/stabsread.c
+++ b/gdb/stabsread.c
@@ -755,7 +755,8 @@ define_symbol (CORE_ADDR valu, const char *string, int desc, int type,
 	SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile);
 
       if (SYMBOL_LANGUAGE (sym) == language_cplus)
-	cp_scan_for_anonymous_namespaces (sym, objfile);
+	cp_scan_for_anonymous_namespaces (get_buildsym_compunit (), sym,
+					  objfile);
 
     }
   p++;
-- 
2.13.6