--- freem/src/mpsdef.h	2025/04/28 19:38:55	1.10
+++ freem/src/mpsdef.h	2025/04/30 17:19:16	1.11
@@ -1,5 +1,5 @@
 /*
- *   $Id: mpsdef.h,v 1.10 2025/04/28 19:38:55 snw Exp $
+ *   $Id: mpsdef.h,v 1.11 2025/04/30 17:19:16 snw Exp $
  *    common external definitions for all mumps modules
  *
  *  
@@ -24,6 +24,9 @@
  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
  *
  *   $Log: mpsdef.h,v $
+ *   Revision 1.11  2025/04/30 17:19:16  snw
+ *   Improve backtraces in debugger
+ *
  *   Revision 1.10  2025/04/28 19:38:55  snw
  *   Add trace mode
  *
@@ -432,7 +435,8 @@ extern short first_process;
 extern size_t shm_init_size;
 extern short inrpt_after_async;
 extern int trace_mode;
-
+extern short debug_mode;
+extern short lasterr[NESTLEVLS + 1];
 /* Macros */
 /* Create a new variable of type (datatype) with space for qty instances */
 #define NEW(datatype,qty)  ((datatype *)calloc(qty,sizeof(datatype)))