* configure (extra_debugging): New variable. EXTRA_DEBUGGING

conditionally generated in config.h.

* gc.c (break_obj): New static variable.
(mark_obj): Debugging feature: if the object is the one stored in
break_obj and not yet reached, then call breakpt.
(deheap): New debugging function for viewing regions of the heaps.

* lib.c (breakpt): New function.

* lib.h (breakpt): Declared.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index 732c5eb8..47cb414e 100644
--- a/lib.h
+++ b/lib.h
@@ -495,6 +495,7 @@ void init(const wchar_t *progname, mem_t *(*oom_realloc)(mem_t *, size_t),
           val *stack_bottom);
 void dump(val obj, val stream);
 void d(val obj);
+void breakpt(void);
 
 #define nil ((obj_t *) 0)