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3.6 bug related to large whilestmt

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rocky 2024-07-13 21:42:49 -04:00
parent 7787166ddf
commit 389fc2360a
3 changed files with 76 additions and 0 deletions
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BIN
test/bytecode_3.6/09_long_whilestmt.pyc Normal file
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74
test/simple_source/bug36/09_long_whilestmt.py Normal file
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@ -0,0 +1,74 @@
# From https://github.com/rocky/python-uncompyle6/issues/420
# Related to EXTENDED_ARG in whilestmt
ERRPR_CODE_DEFINE = {} # Remove this and things works
try:
print()
except Exception:
var1 = 0
var2 = 1
if var1 or var2:
times = 1
while times != False and self.scanner.is_open():
try:
try:
print()
except Exception:
print()
out = 0
count = 1
if out == 1:
break
elif out == 2:
count += 1
if times == 3:
self.func.emit({})
break
else:
continue
if out == 3 or out == b"":
if self.times == 3:
break
count += 1
if count == 3:
count = 0
if out == 4:
self.func.emit(ERRPR_CODE_DEFINE.ReceiedError())
else:
print()
break
continue
else:
count = 0
except Exception:
print("upper exception")
else:
try:
print("jump forward")
while True:
out = self.func.read(count)
if out == b"":
self.func.emit(ERRPR_CODE_DEFINE.ReceiedError())
break
continue
imagedata = out[0]
if imagedata == b"\x05":
self.func.emit(INFORMATION.UnsupportedImage())
break
continue
if imagedata == b"\x15":
self.func.emit(INFORMATION.NoneImage())
break
continue
if out[1] == False:
start_index = imagedata.find(b"BM6")
self.func.emit(imagedata[start_index:], False)
continue
(imagedata, all_code) = imagedata
self.func.emit({})
self.func.emit({})
self.func.emit({}) # remove {} and this works
break
except Exception:
pass

2
uncompyle6/parsers/parse36.py
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@ -53,6 +53,8 @@ class Python36Parser(Python35Parser):
for_block ::= l_stmts_opt come_from_loops JUMP_BACK
come_from_loops ::= COME_FROM_LOOP*
whilestmt ::= SETUP_LOOP testexpr l_stmts_opt
JUMP_BACK come_froms POP_BLOCK
whilestmt ::= SETUP_LOOP testexpr l_stmts_opt
JUMP_BACK come_froms POP_BLOCK COME_FROM_LOOP
whilestmt ::= SETUP_LOOP testexpr l_stmts_opt