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circuitpython/tests/basics/try_except_break.py

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py/bc: Fix size calculation of UNWIND_JUMP opcode in mp_opcode_format. Prior to this patch mp_opcode_format would calculate the incorrect size of the MP_BC_UNWIND_JUMP opcode, missing the additional byte. But, because opcodes below 0x10 are unused and treated as bytes in the .mpy load/save and freezing code, this bug did not show any symptoms, since nested unwind jumps would rarely (if ever) reach a depth of 16 (so the extra byte of this opcode would be between 0x01 and 0x0f and be correctly loaded/saved/frozen simply as an undefined opcode). This patch fixes this bug by correctly accounting for the additional byte. .
2019-09-01 23:30:16 -04:00
# test deep unwind via break from nested try-except (22 of them)
while True:
print(1)
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
try:
print(2)
break
print(3)
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
except:
pass
print(4)