Check if TUI_SRC_WIN is not NULL before referencing it

	PR tui/14486
	* tui/tui-source.c (tui_source_is_displayed): Check if TUI_SRC_WIN
	is not NULL before referencing it.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e20414b..71014b9 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2010-08-27  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR tui/14486
+       * tui/tui-source.c (tui_source_is_displayed): Check if TUI_SRC_WIN
+       is not NULL before referencing it.
+
 2012-08-27  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
        * breakpoint.c (parse_breakpoint_sals) <(*address) == NULL>: New

diff --git a/gdb/tui/tui-source.c b/gdb/tui/tui-source.c
index 9ba9b1d..030653c 100644 (file)
--- a/gdb/tui/tui-source.c
+++ b/gdb/tui/tui-source.c
@@ -334,7 +334,8 @@ tui_show_symtab_source (struct gdbarch *gdbarch, struct symtab *s,
 int
 tui_source_is_displayed (char *fname)
 {
-  return (TUI_SRC_WIN->generic.content_in_use 
+  return (TUI_SRC_WIN != NULL
+         && TUI_SRC_WIN->generic.content_in_use 
          && (filename_cmp (((struct tui_win_element *)
                             (tui_locator_win_info_ptr ())->
                             content[0])->which_element.locator.file_name,