Adaptive opcodes neglect EXTENDED_ARG #91625
Description
Reproducer:
def f(x):
# UNPACK_SEQUENCE 400
# is actually
# EXTENDED_ARG 1
# UNPACK_SEQUENCE 144
(
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
) = x
# 0..7 get printed out before we get
# ValueError: too many values to unpack (expected 144)
for i in range(30):
print(i)
f(range(400))This is the problematic bit of C code:
next_instr--;
_Py_Specialize_UnpackSequence(seq, next_instr, oparg);
DISPATCH();