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Issue 11510: Fix BUILD_SET optimizer bug.

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This commit is contained in:
Raymond Hettinger 2011-03-15 14:50:16 -07:00
parent 729c5e203d
commit 29dcaad6eb
3 changed files with 17 additions and 2 deletions
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14
Lib/test/test_peepholer.py
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@ -267,11 +267,23 @@ class TestTranforms(unittest.TestCase):
asm = disassemble(f)
self.assertNotIn('BINARY_ADD', asm)
class TestBuglets(unittest.TestCase):
def test_bug_11510(self):
# folded constant set optimization was commingled with the tuple
# unpacking optimization which would fail if the set had duplicate
# elements so that the set length was unexpected
def f():
x, y = {1, 1}
return x, y
with self.assertRaises(ValueError):
f()
def test_main(verbose=None):
import sys
from test import support
test_classes = (TestTranforms,)
test_classes = (TestTranforms, TestBuglets)
support.run_unittest(*test_classes)
# verify reference counting