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py/vm: Fix bug with stackless mode and unwinding of exceptions.

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This patch fixes a regression introduced by
71a3d6ec3bd02c5bd13334537e1bd146bb643bad

Previous to this patch the n_state variable was referring to that computed
at the very start of the mp_execute_bytecode function.  This patch fixes it
so that n_state is recomputed when the code_state changes.
This commit is contained in:
Damien George 2017-05-25 20:35:57 +10:00
parent 982e676902
commit 68e71eacb8
1 changed files with 1 additions and 0 deletions
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py/vm.c
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@ -1436,6 +1436,7 @@ unwind_loop:
} else if (code_state->prev != NULL) {
mp_globals_set(code_state->old_globals);
code_state = code_state->prev;
size_t n_state = mp_decode_uint_value(code_state->fun_bc->bytecode);
fastn = &code_state->state[n_state - 1];
exc_stack = (mp_exc_stack_t*)(code_state->state + n_state);
// variables that are visible to the exception handler (declared volatile)