gh-126835: Move constant tuple folding to CFG by WolframAlph · Pull Request #130769 · python/cpython (original) (raw)

After moving folding to codegen (70ce2c8) I can see couple refleaks after running test suite in refleak hunter mode. After some debugging I narrowed down the problem. Long tuple defined directly does not report refleaks:

x = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)

but if it is run via compile, we get refleaks:

compile("x = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)", "", "single")

no idea yet why this is happening. I will be debugging further, but maybe someone has some insight what could be the problem?