Commit 87c39bdb authored by Stefan Behnel's avatar Stefan Behnel

fixed ref-count bug in try-except handling

parent 562dbd1f
......@@ -3960,6 +3960,8 @@ class TryExceptStatNode(StatNode):
self.else_clause.generate_execution_code(code)
code.putln(
"}")
for var in Naming.exc_save_vars:
code.put_xdecref_clear(var, py_object_type)
code.put_goto(try_end_label)
code.put_label(our_error_label)
code.put_var_xdecrefs_clear(self.cleanup_list)
......
__doc__ = u"""
>>> class SampleException(Exception): pass
>>> import sys
>>> def assert_refcount(rc1, rc2, func):
... # test ref-counts, but allow a bit of freedom
... assert rc2 <= rc1 + 4, "%s, before: %d, after %d" % (
... func.__name__, rc1, rc2)
>>> def run_test(repeat, test_func):
... initial_refcount = sys.getrefcount(SampleException)
... for i in range(repeat):
... try: raise SampleException
... except:
... refcount1 = sys.getrefcount(SampleException)
... test_func()
... refcount2 = sys.getrefcount(SampleException)
...
... assert_refcount(refcount1, refcount2, test_func)
... assert_refcount(initial_refcount, refcount2, test_func)
... refcount3 = sys.getrefcount(SampleException)
... assert_refcount(refcount1, refcount3, test_func)
... assert_refcount(initial_refcount, refcount3, test_func)
>>> run_test(50, test_no_exception_else)
>>> run_test(50, test_no_exception)
>>> run_test(50, test_exception)
>>> run_test(50, test_finally)
"""
def test_no_exception():
try:
a = 1+1
except:
pass
def test_no_exception_else():
try:
a = 1+1
except:
pass
else:
b = 1+1
def test_exception():
try:
raise TypeError
except:
pass
def test_finally():
try:
a = 1+1
finally:
b = 1+1
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