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* breakpoint.c (bpstat_free): New.

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(bpstat_clear): Use bpstat_free.
	(delete_breakpoint): Document why we cannot
	remove bpstats from stop_bpstat.
	* breakpoint.h (bpstat_free): Declare.
This commit is contained in:
Vladimir Prus
2007-08-17 17:06:04 +00:00
parent 3992d3b7e2
commit 198757a8b1
3 changed files with 31 additions and 8 deletions
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22
gdb/breakpoint.c
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@@ -1897,6 +1897,15 @@ ep_is_exception_catchpoint (struct breakpoint *ep)
|| (ep->type == bp_catch_throw);
}
void
bpstat_free (bpstat bs)
{
if (bs->old_val != NULL)
value_free (bs->old_val);
free_command_lines (&bs->commands);
xfree (bs);
}
/* Clear a bpstat so that it says we are not at any breakpoint.
Also free any storage that is part of a bpstat. */
@@ -1912,10 +1921,7 @@ bpstat_clear (bpstat *bsp)
while (p != NULL)
{
q = p->next;
if (p->old_val != NULL)
value_free (p->old_val);
free_command_lines (&p->commands);
xfree (p);
bpstat_free (p);
p = q;
}
*bsp = NULL;
@@ -7051,7 +7057,13 @@ delete_breakpoint (struct breakpoint *bpt)
/* Be sure no bpstat's are pointing at it after it's been freed. */
/* FIXME, how can we find all bpstat's?
We just check stop_bpstat for now. */
We just check stop_bpstat for now. Note that we cannot just
remove bpstats pointing at bpt from the stop_bpstat list
entirely, as breakpoint commands are associated with the bpstat;
if we remove it here, then the later call to
bpstat_do_actions (&stop_bpstat);
in event-top.c won't do anything, and temporary breakpoints
with commands won't work. */
for (bs = stop_bpstat; bs; bs = bs->next)
if (bs->breakpoint_at == bpt)
{