From 87735ccbf2a9defdc61ac429a3c8decb425d2ecb Mon Sep 17 00:00:00 2001
From: Pavel Charvat <pchar@ucw.cz>
Date: Thu, 11 Nov 2021 10:42:49 +0000
Subject: [PATCH] Trans: Duplicate exception ids to transaction pool.

Otherwise it breaks after longjmp if allocated on stack, for example in bthrow().
---
 ucw/trans.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ucw/trans.c b/ucw/trans.c
index db883837..8c39c15b 100644
--- a/ucw/trans.c
+++ b/ucw/trans.c
@@ -2,6 +2,7 @@
  *	The UCW Library -- Transactions
  *
  *	(c) 2008--2011 Martin Mares <mj@ucw.cz>
+ *	(c) 2021 Pavel Charvat <pchar@ucw.cz>
  *
  *	This software may be freely distributed and used according to the terms
  *	of the GNU Lesser General Public License.
@@ -201,7 +202,7 @@ trans_vthrow(const char *id, void *object, const char *fmt, va_list args)
   if (!mp)
     vdie(fmt, args);
   struct exception *x = mp_alloc(mp, sizeof(*x));
-  x->id = id;
+  x->id = mp_strdup(mp, id);
   x->object = object;
   x->msg = mp_vprintf(mp, fmt, args);
   trans_throw_exc(x);
-- 
2.39.2