# Buggy code
def run(self):
    for inst in self._iter_inst():
        fname = "op_%s" % inst.opname
        fn = getattr(self, fname, None)
        if fn is not None:
            fn(inst)
        else:
            # this catches e.g. try... except
            if inst.is_jump:
                l = Loc(self.bytecode.func_id.filename, inst.lineno)
                msg = "Use of unsupported opcode (%s) found" % inst.opname
                raise UnsupportedError(msg, loc=l)

    # Close all blocks
    for cur, nxt in zip(self.blockseq, self.blockseq[1:]):
        blk = self.blocks[cur]
        if not blk.outgoing_jumps and not blk.terminating:
            blk.outgoing_jumps[nxt] = 0

    graph = CFGraph()
    for b in self.blocks:
        graph.add_node(b)
    for b in self.blocks.values():
        for out, pops in b.outgoing_jumps.items():
            graph.add_edge(b.offset, out, pops)
    graph.set_entry_point(min(self.blocks))
    graph.process()
    self.graph = graph

    # Fill incoming
    for b in utils.itervalues(self.blocks):
        for out, pops in b.outgoing_jumps.items():
            self.blocks[out].incoming_jumps[b.offset] = pops

    # Find liveblocks
    self.liveblocks = dict((i, self.blocks[i]) for i in self.graph.nodes())

    for lastblk in reversed(self.blockseq):
        if lastblk in self.liveblocks:
            break
    else:
        raise AssertionError("No live block that exits!?")

    # Find backbone
    backbone = self.graph.backbone()
    # Filter out in loop blocks (Assuming no other cyclic control blocks)
    # This is to unavoid variable defined in loops to be considered as
    # function scope.
    inloopblocks = set()

    for b in self.blocks.keys():
        if self.graph.in_loops(b):
            inloopblocks.add(b)

    self.backbone = backbone - inloopblocks


# 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):
    for inst in self._iter_inst():
        fname = "op_%s" % inst.opname
        fn = getattr(self, fname, None)
        if fn is not None:
            fn(inst)
        elif inst.is_jump:
            # this catches e.g. try... except
            l = Loc(self.bytecode.func_id.filename, inst.lineno)
            if inst.opname in {"SETUP_EXCEPT", "SETUP_FINALLY"}:
                msg = "'try' block not supported until python3.7 or later"
            else:
                msg = "Use of unsupported opcode (%s) found" % inst.opname
            raise UnsupportedError(msg, loc=l)
        else:
            # Non-jump instructions are ignored
            pass  # intentionally

    # Close all blocks
    for cur, nxt in zip(self.blockseq, self.blockseq[1:]):
        blk = self.blocks[cur]
        if not blk.outgoing_jumps and not blk.terminating:
            blk.outgoing_jumps[nxt] = 0

    graph = CFGraph()
    for b in self.blocks:
        graph.add_node(b)
    for b in self.blocks.values():
        for out, pops in b.outgoing_jumps.items():
            graph.add_edge(b.offset, out, pops)
    graph.set_entry_point(min(self.blocks))
    graph.process()
    self.graph = graph

    # Fill incoming
    for b in utils.itervalues(self.blocks):
        for out, pops in b.outgoing_jumps.items():
            self.blocks[out].incoming_jumps[b.offset] = pops

    # Find liveblocks
    self.liveblocks = dict((i, self.blocks[i]) for i in self.graph.nodes())

    for lastblk in reversed(self.blockseq):
        if lastblk in self.liveblocks:
            break
    else:
        raise AssertionError("No live block that exits!?")

    # Find backbone
    backbone = self.graph.backbone()
    # Filter out in loop blocks (Assuming no other cyclic control blocks)
    # This is to unavoid variable defined in loops to be considered as
    # function scope.
    inloopblocks = set()

    for b in self.blocks.keys():
        if self.graph.in_loops(b):
            inloopblocks.add(b)

    self.backbone = backbone - inloopblocks