Stefan Krah added the comment:
I think I still get a problem in 2.7:
[1/1] test_unicode
==23430== Invalid read of size 1
==23430== at 0x484541: PyUnicodeUCS2_FromFormatV (unicodeobject.c:736)
==23430== by 0x485C75: PyUnicodeUCS2_FromFormat (unicodeobject.c:1083)
736 for (f = format; *f; f++) {
(gdb) p format
$1 = 0x71d45f4 "%"
(gdb) p f
$2 = 0x71d45f6 ""
So format=="%", first f++ happens at 738, second f++ happens implicitly
at the end of the for loop. The *f condition in 736 is then an invalid
read.
Perhaps use while for the outer loop and a break? (It's just my
personal preference, I sometimes get confused by incrementing
at the end and also inside for loops.)
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<http://bugs.python.org/issue23055>
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