# Buggy code
def run(self):
    """Run a trace over the bytecode over all reachable path.

    The trace starts at bytecode offset 0 and gathers stack and control-
    flow information by partially interpreting each bytecode.
    Each ``State`` instance in the trace corresponds to a basic-block.
    The State instances forks when a jump instruction is encountered.
    A newly forked state is then added to the list of pending states.
    The trace ends when there are no more pending states.
    """
    firststate = State(bytecode=self._bytecode, pc=0, nstack=0, blockstack=())
    runner = TraceRunner(debug_filename=self._bytecode.func_id.filename)
    runner.pending.append(firststate)

    # Enforce unique-ness on initial PC to avoid re-entering the PC with
    # a different stack-depth. We don't know if such a case is ever
    # possible, but no such case has been encountered in our tests.
    first_encounter = UniqueDict()
    # Loop over each pending state at a initial PC.
    # Each state is tracing a basic block
    while runner.pending:
        _logger.debug("pending: %s", runner.pending)
        state = runner.pending.pop()
        if state not in runner.finished:
            _logger.debug("stack: %s", state._stack)
            first_encounter[state.pc_initial] = state
            # Loop over the state until it is terminated.
            while True:
                runner.dispatch(state)
                # Terminated?
                if state.has_terminated():
                    break
                # Not yet?
                else:
                    state.advance_pc()
                    # Must the new PC be a new block?
                    if self._is_implicit_new_block(state):
                        state.split_new_block()
                        break
            _logger.debug("end state. edges=%s", state.outgoing_edges)
            runner.finished.add(state)
            out_states = state.get_outgoing_states()
            runner.pending.extend(out_states)

    # Complete controlflow
    self._build_cfg(runner.finished)
    # Prune redundant PHI-nodes
    self._prune_phis(runner)
    # Post process
    for state in sorted(runner.finished, key=lambda x: x.pc_initial):
        self.block_infos[state.pc_initial] = si = adapt_state_infos(state)
        _logger.debug("block_infos %s:\n%s", state, si)


# Traceback (IndexError)
Traceback (most recent call last):
File "/home/ibutygin/miniconda3/envs/NUMBA_CUSTOM/lib/python3.7/site-packages/llvmlite/ir/instructions.py", line 619, in __init__
typ = typ.elements[i]
IndexError: tuple index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/ibutygin/src/numba/numba/numba/errors.py", line 717, in new_error_context
yield
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 260, in lower_block
self.lower_inst(inst)
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 303, in lower_inst
val = self.lower_assign(ty, inst)
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 467, in lower_assign
return self.lower_expr(ty, value)
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 932, in lower_expr
res = self.lower_call(resty, expr)
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 724, in lower_call
res = self._lower_call_normal(fnty, expr, signature)
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 903, in _lower_call_normal
res = impl(self.builder, argvals, self.loc)
File "/home/ibutygin/src/numba/numba/numba/targets/base.py", line 1132, in __call__
res = self._imp(self._context, builder, self._sig, args, loc=loc)
File "/home/ibutygin/src/numba/numba/numba/targets/base.py", line 1157, in wrapper
return fn(*args, **kwargs)
File "/home/ibutygin/src/numba/numba/numba/typing/templates.py", line 778, in method_impl
return call(builder, args)
File "/home/ibutygin/src/numba/numba/numba/targets/base.py", line 1132, in __call__
res = self._imp(self._context, builder, self._sig, args, loc=loc)
File "/home/ibutygin/src/numba/numba/numba/targets/base.py", line 1157, in wrapper
return fn(*args, **kwargs)
File "/home/ibutygin/src/numba/numba/numba/targets/imputils.py", line 193, in imp
builder, func, fndesc.restype, fndesc.argtypes, args)
File "/home/ibutygin/src/numba/numba/numba/targets/callconv.py", line 477, in call_function
args = list(arginfo.as_arguments(builder, args))
File "/home/ibutygin/src/numba/numba/numba/datamodel/packer.py", line 100, in as_arguments
for dm, val in zip(self._dm_args, values)
File "/home/ibutygin/src/numba/numba/numba/datamodel/packer.py", line 100, in <listcomp>
for dm, val in zip(self._dm_args, values)
File "/home/ibutygin/src/numba/numba/numba/datamodel/models.py", line 447, in as_argument
v = builder.extract_value(value, [i])
File "/home/ibutygin/miniconda3/envs/NUMBA_CUSTOM/lib/python3.7/site-packages/llvmlite/ir/builder.py", line 927, in extract_value
instr = instructions.ExtractValue(self.block, agg, idx, name=name)
File "/home/ibutygin/miniconda3/envs/NUMBA_CUSTOM/lib/python3.7/site-packages/llvmlite/ir/instructions.py", line 622, in __init__
% (list(indices), agg.type))
TypeError: Can't index at [0] in {}

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "test.py", line 73, in <module>
print(bar(Dummy()))
File "/home/ibutygin/src/numba/numba/numba/dispatcher.py", line 420, in _compile_for_args
raise e
File "/home/ibutygin/src/numba/numba/numba/dispatcher.py", line 353, in _compile_for_args
return self.compile(tuple(argtypes))
File "/home/ibutygin/src/numba/numba/numba/compiler_lock.py", line 32, in _acquire_compile_lock
return func(*args, **kwargs)
File "/home/ibutygin/src/numba/numba/numba/dispatcher.py", line 768, in compile
cres = self._compiler.compile(args, return_type)
File "/home/ibutygin/src/numba/numba/numba/dispatcher.py", line 77, in compile
status, retval = self._compile_cached(args, return_type)
File "/home/ibutygin/src/numba/numba/numba/dispatcher.py", line 91, in _compile_cached
retval = self._compile_core(args, return_type)
File "/home/ibutygin/src/numba/numba/numba/dispatcher.py", line 109, in _compile_core
pipeline_class=self.pipeline_class)
File "/home/ibutygin/src/numba/numba/numba/compiler.py", line 543, in compile_extra
return pipeline.compile_extra(func)
File "/home/ibutygin/src/numba/numba/numba/compiler.py", line 328, in compile_extra
return self._compile_bytecode()
File "/home/ibutygin/src/numba/numba/numba/compiler.py", line 389, in _compile_bytecode
return self._compile_core()
File "/home/ibutygin/src/numba/numba/numba/compiler.py", line 368, in _compile_core
raise e
File "/home/ibutygin/src/numba/numba/numba/compiler.py", line 359, in _compile_core
pm.run(self.state)
File "/home/ibutygin/src/numba/numba/numba/compiler_machinery.py", line 331, in run
raise patched_exception
File "/home/ibutygin/src/numba/numba/numba/compiler_machinery.py", line 322, in run
self._runPass(idx, pass_inst, state)
File "/home/ibutygin/src/numba/numba/numba/compiler_lock.py", line 32, in _acquire_compile_lock
return func(*args, **kwargs)
File "/home/ibutygin/src/numba/numba/numba/compiler_machinery.py", line 281, in _runPass
mutated |= check(pss.run_pass, internal_state)
File "/home/ibutygin/src/numba/numba/numba/compiler_machinery.py", line 268, in check
mangled = func(compiler_state)
File "/home/ibutygin/src/numba/numba/numba/typed_passes.py", line 391, in run_pass
NativeLowering().run_pass(state)
File "/home/ibutygin/src/numba/numba/numba/typed_passes.py", line 333, in run_pass
lower.lower()
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 179, in lower
self.lower_normal_function(self.fndesc)
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 220, in lower_normal_function
entry_block_tail = self.lower_function_body()
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 245, in lower_function_body
self.lower_block(block)
File "/home/ibutygin/src/numba/numba/numba/lowering.py", line 260, in lower_block
self.lower_inst(inst)
File "/home/ibutygin/miniconda3/envs/NUMBA_CUSTOM/lib/python3.7/contextlib.py", line 130, in __exit__
self.gen.throw(type, value, traceback)
File "/home/ibutygin/src/numba/numba/numba/errors.py", line 725, in new_error_context
six.reraise(type(newerr), newerr, tb)
File "/home/ibutygin/src/numba/numba/numba/six.py", line 669, in reraise
raise value
numba.errors.LoweringError: Failed in nopython mode pipeline (step: nopython mode backend)
Can't index at [0] in {}

File "test.py", line 71:
def bar(obj):
return obj.inline_method(123,456)
^

[1] During: lowering "$10call_method.4 = call $4load_method.1($const6.2, $const8.3, func=$4load_method.1, args=[Var($const6.2, test.py:71), Var($const8.3, test.py:71)], kws=(), vararg=None)" at test.py (71)

# Fixed code
def run(self):
    """Run a trace over the bytecode over all reachable path.

    The trace starts at bytecode offset 0 and gathers stack and control-
    flow information by partially interpreting each bytecode.
    Each ``State`` instance in the trace corresponds to a basic-block.
    The State instances forks when a jump instruction is encountered.
    A newly forked state is then added to the list of pending states.
    The trace ends when there are no more pending states.
    """
    firststate = State(bytecode=self._bytecode, pc=0, nstack=0, blockstack=())
    runner = TraceRunner(debug_filename=self._bytecode.func_id.filename)
    runner.pending.append(firststate)

    # Enforce unique-ness on initial PC to avoid re-entering the PC with
    # a different stack-depth. We don't know if such a case is ever
    # possible, but no such case has been encountered in our tests.
    first_encounter = UniqueDict()
    # Loop over each pending state at a initial PC.
    # Each state is tracing a basic block
    while runner.pending:
        _logger.debug("pending: %s", runner.pending)
        state = runner.pending.popleft()
        if state not in runner.finished:
            _logger.debug("stack: %s", state._stack)
            first_encounter[state.pc_initial] = state
            # Loop over the state until it is terminated.
            while True:
                runner.dispatch(state)
                # Terminated?
                if state.has_terminated():
                    break
                elif (
                    state.has_active_try()
                    and state.get_inst().opname not in _NO_RAISE_OPS
                ):
                    # Is in a *try* block
                    state.fork(pc=state.get_inst().next)
                    tryblk = state.get_top_block("TRY")
                    state.pop_block_and_above(tryblk)
                    nstack = state.stack_depth
                    kwargs = {}
                    if nstack > tryblk["entry_stack"]:
                        kwargs["npop"] = nstack - tryblk["entry_stack"]
                    handler = tryblk["handler"]
                    kwargs["npush"] = {
                        BlockKind("EXCEPT"): _EXCEPT_STACK_OFFSET,
                        BlockKind("FINALLY"): _FINALLY_POP,
                    }[handler["kind"]]
                    kwargs["extra_block"] = handler
                    state.fork(pc=tryblk["end"], **kwargs)
                    break
                else:
                    state.advance_pc()
                    # Must the new PC be a new block?
                    if self._is_implicit_new_block(state):
                        state.split_new_block()
                        break
            _logger.debug("end state. edges=%s", state.outgoing_edges)
            runner.finished.add(state)
            out_states = state.get_outgoing_states()
            runner.pending.extend(out_states)

    # Complete controlflow
    self._build_cfg(runner.finished)
    # Prune redundant PHI-nodes
    self._prune_phis(runner)
    # Post process
    for state in sorted(runner.finished, key=lambda x: x.pc_initial):
        self.block_infos[state.pc_initial] = si = adapt_state_infos(state)
        _logger.debug("block_infos %s:\n%s", state, si)