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Author	arigo
Date	2005年10月21日.12:33:30
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Logged In: YES user_id=4771 I would suspect the following one to be due to incorrect handling of EXTENDED_ARG -- it's from a PyPy test about that: longexpr = 'x = x or ' + '-x' * 2500 code = ''' def f(x): %s %s %s %s %s %s %s %s %s %s while x: x -= 1 # EXTENDED_ARG/JUMP_ABSOLUTE here return x ''' % ((longexpr,)*10) exec code f(5) SystemError: unknown opcode dis.dis() shows that the target of both the SETUP_LOOP and the JUMP_IF_FALSE at the start of the loop are wrong.

Content

Logged In: YES 
user_id=4771
I would suspect the following one to be due to incorrect
handling of EXTENDED_ARG -- it's from a PyPy test about that:
longexpr = 'x = x or ' + '-x' * 2500
code = '''
def f(x):
 %s
 %s
 %s
 %s
 %s
 %s
 %s
 %s
 %s
 %s
 while x:
 x -= 1
 # EXTENDED_ARG/JUMP_ABSOLUTE here
 return x
''' % ((longexpr,)*10)
exec code
f(5)
SystemError: unknown opcode
dis.dis() shows that the target of both the SETUP_LOOP and
the JUMP_IF_FALSE at the start of the loop are wrong.

History
Date	User	Action	Args
2007年08月23日 14:35:37	admin	link	issue1333982 messages
2007年08月23日 14:35:37	admin	create