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[PATCH] tui-out: don't "inherit" redirect from CLI


Since revision 1.17 tui_ui_out_impl "inherits" from cli_ui_out_impl (ie,
it starts as a copy of that struct). tui_ui_out_impl.redirect is never
redefined after that so it points to cli_redirect(). (Before revision
1.17 it was NULL.)

As a consequence, uo_redirect() will actually try to redirect if passed
a tui_ui_out_impl. That will probably crash gdb (as
tui_ui_out_impl->data->stream and tui_ui_out_impl->data->original_stream
don't exist).

So set tui_ui_out_impl.redirect to NULL after "inheriting".

(Just something I noticed while trying to understand the ui code.)
---
 gdb/ChangeLog     |    5 +++++
 gdb/tui/tui-out.c |    1 +
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 5d81848..1beb8fc 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2010-08-30  Paul Bolle  <pebolle@tiscali.nl>
+
+	* tui/tui-out.c (_initialize_tui_out): Don't "inherit" redirect from
+	CLI.
+
 2010-08-28  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	Code cleanup.
diff --git a/gdb/tui/tui-out.c b/gdb/tui/tui-out.c
index 8cd6b88..1e8ef74 100644
--- a/gdb/tui/tui-out.c
+++ b/gdb/tui/tui-out.c
@@ -178,4 +178,5 @@ _initialize_tui_out (void)
   tui_ui_out_impl.field_string = tui_field_string;
   tui_ui_out_impl.field_fmt = tui_field_fmt;
   tui_ui_out_impl.text = tui_text;
+  tui_ui_out_impl.redirect = NULL;
 }
-- 
1.7.2.1




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