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Issue #14700: Fix two broken and undefined-behaviour-inducing overflow checks in old-style string formatting. Thanks Serhiy Storchaka for report and original patch.

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Mark Dickinson 2012-05-07 11:20:50 +01:00
parent 10ba07a39e
commit 99e2e5552a
3 changed files with 9 additions and 2 deletions
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4
Lib/test/string_tests.py
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@ -1197,6 +1197,10 @@ class MixinStrUnicodeUserStringTest:
self.checkraises(TypeError, '%10.*f', '__mod__', ('foo', 42.))
self.checkraises(ValueError, '%10', '__mod__', (42,))
# Outrageously large width or precision should raise ValueError.
self.checkraises(ValueError, '%%%df' % (2**64), '__mod__', (3.2))
self.checkraises(ValueError, '%%.%df' % (2**64), '__mod__', (3.2))
def test_floatformatting(self):
# float formatting
for prec in range(100):