sh.diff

--- a/src.freebsd/sh/memalloc.c
+++ b/src.freebsd/sh/memalloc.c
@@ -208,6 +208,7 @@ setstackmark(struct stackmark *mark)
        mark->stackp = stackp;
        mark->stacknxt = stacknxt;
        mark->stacknleft = stacknleft;
+       printf("SETSTACKMARK %p\n", mark);
        /* Ensure this block stays in place. */
        if (stackp != NULL && stacknxt == SPACE(stackp))
                stalloc(1);
@@ -220,6 +221,7 @@ popstackmark(struct stackmark *mark)
        struct stack_block *sp;
 
        INTOFF;
+       printf("POPSTACKMARK %p %p\n", mark, stackp);
        while (stackp != mark->stackp) {
                sp = stackp;
                stackp = sp->prev;