Missing instr after "FOR_ITER"

[congy]

Hi!

I noticed that one instruction after each "FOR_ITER" is not traced. For example, if the original bytecode is like:
3 FOR_ITER 17 (to 23)
6 STORE_FAST 1: n
9 LOAD_GLOBAL 0: int
12 LOAD_FAST 1: n
When tracing, only instr 3, 9, 12 are traced but instr 6 is missing.
Any idea why this happens?

Thanks!

[congy]

Actually not every instruction is traced using your code. The problem above is that after executing FOR_ITER, 'STORE_FAST' is predicted to be executed, and will bypass the tracing. To completely trace every instr, the PREDICTION feature needs to be disabled (i.e., to modify https://github.com/extremecoders-re/python2-tracer/blob/master/Python/ceval.c#L903).