micropython/tests/stress/recursive_iternext.py

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Python
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# This tests that recursion with iternext doesn't lead to segfault.
2017-03-11 00:16:26 +00:00
try:
enumerate
filter
map
max
zip
except:
print("SKIP")
raise SystemExit
# We need to pick an N that is large enough to hit the recursion
# limit, but not too large that we run out of heap memory.
try:
# large stack/heap, eg unix
[0] * 80000
N = 5000
except:
try:
# medium, eg pyboard
[0] * 10000
N = 1000
except:
# small, eg esp8266
N = 100
try:
x = (1, 2)
for i in range(N):
x = enumerate(x)
tuple(x)
except RuntimeError:
print("RuntimeError")
try:
x = (1, 2)
for i in range(N):
x = filter(None, x)
tuple(x)
except RuntimeError:
print("RuntimeError")
try:
x = (1, 2)
for i in range(N):
x = map(max, x, ())
tuple(x)
except RuntimeError:
print("RuntimeError")
try:
x = (1, 2)
for i in range(N):
x = zip(x)
tuple(x)
except RuntimeError:
print("RuntimeError")