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fix latent bugs in ui-out.c

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The destructor code in ui-out.c has a latent bug, which is hidden by
the fact that nothing uses this right now.  This patch fixes the
problem.  The bug is that we don't always clear a pointer in the
ui-out object, leading to a bad free.

2014-03-17  Tom Tromey  <tromey@redhat.com>

	* ui-out.c (clear_table, ui_out_new): Clear uiout->table.id.
This commit is contained in:
Tom Tromey 2014-03-17 19:02:13 +00:00 committed by Pedro Alves
parent c712f1e3f7
commit 9c1fcd01cf
2 changed files with 7 additions and 2 deletions
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4
gdb/ChangeLog
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@ -1,3 +1,7 @@
2014-03-17 Tom Tromey <tromey@redhat.com>
* ui-out.c (clear_table, ui_out_new): Clear uiout->table.id.
2014-03-17 Pierre-Marie de Rodat <derodat@adacore.com>
* ada-lang.c (decode_constrained_packed_array): Perform a

5
gdb/ui-out.c
View File

@ -807,8 +807,8 @@ uo_table_header (struct ui_out *uiout, int width, enum ui_align align,
static void
clear_table (struct ui_out *uiout)
{
if (uiout->table.id)
xfree (uiout->table.id);
xfree (uiout->table.id);
uiout->table.id = NULL;
clear_header_list (uiout);
}
@ -1114,6 +1114,7 @@ ui_out_new (const struct ui_out_impl *impl, void *data,
current->field_count = 0;
VEC_safe_push (ui_out_level_p, uiout->levels, current);
uiout->table.id = NULL;
uiout->table.header_first = NULL;
uiout->table.header_last = NULL;
uiout->table.header_next = NULL;