micropython

embedded microcontroller python micropython

Damien George bd556b6996 py: Fix compiling and decoding of args at large arg positions. There were two issues with the existing code: 1. "1 << i" is computed as a 32-bit number so would overflow when executed on 64-bit machines (when mp_uint_t is 64-bit). This meant that args beyond 32 positions would not be handled correctly. 2. star_args must fit as a positive small int so that it is encoded correctly in the emitted code. MP_SMALL_INT_BITS is too big because it overflows a small int by 1 bit. MP_SMALL_INT_BITS - 1 does not work because it produces a signed small int which is then sign extended when extracted (even by mp_obj_get_int_truncated), and this sign extension means that any position arg after *args is also treated as a star-arg. So the maximum bit position is MP_SMALL_INT_BITS - 2. This means that MP_OBJ_SMALL_INT_VALUE() can be used instead of mp_obj_get_int_truncated() to get the value of star_args. These issues are fixed by this commit, and a test added. Signed-off-by: Damien George <damien@micropython.org>		3 years ago
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bytecode_limit.py	py/emitbc: Add check for bytecode jump offset overflow.	3 years ago
bytecode_limit.py.exp	py/emitbc: Add check for bytecode jump offset overflow.	3 years ago
dict_copy.py	tests: Format all Python code with black, except tests in basics subdir.	5 years ago
dict_create.py	tests: Add new subdir "stress/" specifically for stress tests.	9 years ago
dict_create_max.py	tests/stress: Add test to create a dict beyond "maximum" rehash size.	7 years ago
fun_call_limit.py	py: Fix compiling and decoding of *args at large arg positions.	3 years ago
fun_call_limit.py.exp	py: Fix compiling and decoding of *args at large arg positions.	3 years ago
gc_trace.py	tests: Format all Python code with black, except tests in basics subdir.	5 years ago
list_sort.py	tests: Add new subdir "stress/" specifically for stress tests.	9 years ago
qstr_limit.py	tests: Format all Python code with black, except tests in basics subdir.	5 years ago
qstr_limit.py.exp	tests/stress/qstr_limit: Tune params to run with stm32 port.	5 years ago
recursion.py	tests: Format all Python code with black, except tests in basics subdir.	5 years ago
recursive_data.py	tests: Move recursive tests to the tests/stress/ subdir.	7 years ago
recursive_data.py.exp	tests: Move recursive tests to the tests/stress/ subdir.	7 years ago
recursive_gen.py	tests: Format all Python code with black, except tests in basics subdir.	5 years ago
recursive_iternext.py	tests/stress/recursive_iternext.py: Increase large depth to 5000.	5 years ago
recursive_iternext.py.exp	tests: Move recursive tests to the tests/stress/ subdir.	7 years ago