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If a type has a repr function but no print function, printing it now

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calls the repr function.  When the refcount is bad, don't print
the object at all (chances of crashes).
Changes to checking and printing of references: the consistency
check is somewhat faster; don't print strings referenced once
(most occur in function's name lists).
This commit is contained in:
Guido van Rossum 1992-09-03 20:32:55 +00:00
parent 99bec95482
commit 2e8f6140ff
1 changed files with 34 additions and 5 deletions
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39
Objects/object.c
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@ -77,10 +77,28 @@ printobject(op, fp, flags)
}
else {
if (op->ob_refcnt <= 0)
fprintf(fp, "(refcnt %u):", op->ob_refcnt);
if (op->ob_type->tp_print == NULL)
fprintf(fp, "<%s object at %lx>",
op->ob_type->tp_name, (long)op);
fprintf(fp, "<refcnt %u at %lx>",
op->ob_refcnt, (long)op);
else if (op->ob_type->tp_print == NULL) {
if (op->ob_type->tp_repr == NULL) {
fprintf(fp, "<%s object at %lx>",
op->ob_type->tp_name, (long)op);
}
else {
object *s = reprobject(op);
if (s == NULL)
ret = -1;
else if (!is_stringobject(s)) {
err_setstr(TypeError,
"repr not string");
ret = -1;
}
else {
fprintf(fp, "%s", getstringvalue(s));
}
XDECREF(s);
}
}
else
ret = (*op->ob_type->tp_print)(op, fp, flags);
}
@ -252,6 +270,12 @@ UNREF(op)
fprintf(stderr, "UNREF negative refcnt\n");
abort();
}
if (op == &refchain ||
op->_ob_prev->_ob_next != op || op->_ob_next->_ob_prev != op) {
fprintf(stderr, "UNREF invalid object\n");
abort();
}
#ifdef SLOW_UNREF_CHECK
for (p = refchain._ob_next; p != &refchain; p = p->_ob_next) {
if (p == op)
break;
@ -260,8 +284,10 @@ UNREF(op)
fprintf(stderr, "UNREF unknown object\n");
abort();
}
#endif
op->_ob_next->_ob_prev = op->_ob_prev;
op->_ob_prev->_ob_next = op->_ob_next;
op->_ob_next = op->_ob_prev = NULL;
}
DELREF(op)
@ -269,14 +295,17 @@ DELREF(op)
{
UNREF(op);
(*(op)->ob_type->tp_dealloc)(op);
op->ob_type = NULL;
}
printrefs(fp)
FILE *fp;
{
object *op;
fprintf(fp, "Remaining objects:\n");
fprintf(fp, "Remaining objects (except strings referenced once):\n");
for (op = refchain._ob_next; op != &refchain; op = op->_ob_next) {
if (op->ob_refcnt == 1 && is_stringobject(op))
continue; /* Will be printed elsewhere */
fprintf(fp, "[%d] ", op->ob_refcnt);
if (printobject(op, fp, 0) != 0)
err_clear();