[PATCH 03/20] Move "fullname" to tui_source_window

[Tom Tromey <tom@tromey.com>]

The "fullname" field in tui_source_window_base is only used by one
subclass.  This patch moves the field to that subclass, and changes it
to be a unique_xmalloc_ptr.

gdb/ChangeLog
2019-09-10  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<~tui_source_window_base>: Don't declare.
	<fullname>: Remove.
	* tui/tui-winsource.c (~tui_source_window_base): Remove.
	* tui/tui-source.h (struct tui_source_window) <fullname>: New
	member.
	* tui/tui-source.c (tui_source_window::set_contents): Update.
	(tui_source_window::location_matches_p)
	(tui_source_window::maybe_update): Update.
---
 gdb/ChangeLog           | 12 ++++++++++++
 gdb/tui/tui-source.c    |  7 +++----
 gdb/tui/tui-source.h    |  3 +++
 gdb/tui/tui-winsource.c |  5 -----
 gdb/tui/tui-winsource.h |  5 +----
 5 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/gdb/tui/tui-source.c b/gdb/tui/tui-source.c
index c379173018d..f70e053bdb5 100644
--- a/gdb/tui/tui-source.c
+++ b/gdb/tui/tui-source.c
@@ -155,8 +155,7 @@ tui_source_window::set_contents (struct gdbarch *arch,
 
 	  title = s_filename;
 
-	  xfree (fullname);
-	  fullname = xstrdup (symtab_to_fullname (s));
+	  fullname = make_unique_xstrdup (symtab_to_fullname (s));
 
 	  cur_line = 0;
 	  gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s));
@@ -276,7 +275,7 @@ tui_source_window::location_matches_p (struct bp_location *loc, int line_no)
   return (content[line_no].line_or_addr.loa == LOA_LINE
 	  && content[line_no].line_or_addr.u.line_no == loc->line_number
 	  && loc->symtab != NULL
-	  && filename_cmp (fullname,
+	  && filename_cmp (fullname.get (),
 			   symtab_to_fullname (loc->symtab)) == 0);
 }
 
@@ -308,7 +307,7 @@ tui_source_window::maybe_update (struct frame_info *fi, symtab_and_line sal,
     start_line = 1;
 
   bool source_already_displayed = (sal.symtab != 0
-				   && showing_source_p (fullname));
+				   && showing_source_p (fullname.get ()));
 
   struct tui_line_or_address l;
 
diff --git a/gdb/tui/tui-source.h b/gdb/tui/tui-source.h
index a7002123c97..30728e4214e 100644
--- a/gdb/tui/tui-source.h
+++ b/gdb/tui/tui-source.h
@@ -76,6 +76,9 @@ private:
      in the current source window.  */
   bool line_is_displayed (int line) const;
 
+  /* It is the resolved form as returned by symtab_to_fullname.  */
+  gdb::unique_xmalloc_ptr<char> fullname;
+
   /* A token used to register and unregister an observer.  */
   gdb::observers::token m_observable;
 };
diff --git a/gdb/tui/tui-winsource.c b/gdb/tui/tui-winsource.c
index d5281193c0e..8b507ed9126 100644
--- a/gdb/tui/tui-winsource.c
+++ b/gdb/tui/tui-winsource.c
@@ -261,11 +261,6 @@ tui_source_window_base::tui_source_window_base (enum tui_win_type type)
 }
 
 
-tui_source_window_base::~tui_source_window_base ()
-{
-  xfree (fullname);
-}  
-
 /* See tui-data.h.  */
 
 void
diff --git a/gdb/tui/tui-winsource.h b/gdb/tui/tui-winsource.h
index 64f0739e536..eca0bde4bb8 100644
--- a/gdb/tui/tui-winsource.h
+++ b/gdb/tui/tui-winsource.h
@@ -78,7 +78,7 @@ struct tui_source_window_base : public tui_win_info
 {
 protected:
   explicit tui_source_window_base (enum tui_win_type type);
-  ~tui_source_window_base () override;
+
   DISABLE_COPY_AND_ASSIGN (tui_source_window_base);
 
   void do_scroll_horizontal (int num_to_scroll) override;
@@ -137,9 +137,6 @@ public:
   int horizontal_offset = 0;
   struct tui_line_or_address start_line_or_addr;
 
-  /* It is the resolved form as returned by symtab_to_fullname.  */
-  char *fullname = nullptr;
-
   /* Architecture associated with code at this location.  */
   struct gdbarch *gdbarch = nullptr;
 
-- 
2.17.2