# Buggy code
def generate_evaluation_code(self, code):
    function = self.function
    if function.is_name or function.is_attribute:
        code.globalstate.use_entry_utility_code(function.entry)

    if (
        not function.type.is_pyobject
        or len(self.arg_tuple.args) > 1
        or (self.arg_tuple.args and self.arg_tuple.is_literal)
    ):
        super(SimpleCallNode, self).generate_evaluation_code(code)
        return

    # Special case 0-args and try to avoid explicit tuple creation for Python calls with 1 arg.
    arg = self.arg_tuple.args[0] if self.arg_tuple.args else None
    subexprs = (self.self, self.coerced_self, function, arg)
    for subexpr in subexprs:
        if subexpr is not None:
            subexpr.generate_evaluation_code(code)

    code.mark_pos(self.pos)
    assert self.is_temp
    self.allocate_temp_result(code)

    if arg is None:
        code.globalstate.use_utility_code(
            UtilityCode.load_cached("PyObjectCallNoArg", "ObjectHandling.c")
        )
        code.putln(
            "%s = __Pyx_PyObject_CallNoArg(%s); %s"
            % (
                self.result(),
                function.py_result(),
                code.error_goto_if_null(self.result(), self.pos),
            )
        )
    else:
        code.globalstate.use_utility_code(
            UtilityCode.load_cached("PyObjectCallOneArg", "ObjectHandling.c")
        )
        code.putln(
            "%s = __Pyx_PyObject_CallOneArg(%s, %s); %s"
            % (
                self.result(),
                function.py_result(),
                arg.py_result(),
                code.error_goto_if_null(self.result(), self.pos),
            )
        )

    code.put_gotref(self.py_result())

    for subexpr in subexprs:
        if subexpr is not None:
            subexpr.generate_disposal_code(code)
            subexpr.free_temps(code)


# Traceback (AssertionError)
======================================================================
FAIL: int_abs (builtin_abs)
Doctest: builtin_abs.int_abs
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.6/doctest.py", line 2199, in runTest
raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for builtin_abs.int_abs
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/c/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line unknown line number, in int_abs

----------------------------------------------------------------------
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/c/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line ?, in builtin_abs.int_abs
Failed example:
int_abs(-max_int-1)     #doctest: +ELLIPSIS
Expected:
Traceback (most recent call last):
...
OverflowError: ...
Got:
-2147483648


======================================================================
FAIL: long_abs (builtin_abs)
Doctest: builtin_abs.long_abs
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.6/doctest.py", line 2199, in runTest
raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for builtin_abs.long_abs
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/c/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line unknown line number, in long_abs

----------------------------------------------------------------------
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/c/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line ?, in builtin_abs.long_abs
Failed example:
long_abs(-max_long-1)     #doctest: +ELLIPSIS
Expected:
Traceback (most recent call last):
...
OverflowError: ...
Got:
-9223372036854775808


======================================================================
FAIL: long_long_abs (builtin_abs)
Doctest: builtin_abs.long_long_abs
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.6/doctest.py", line 2199, in runTest
raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for builtin_abs.long_long_abs
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/c/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line unknown line number, in long_long_abs

----------------------------------------------------------------------
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/c/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line ?, in builtin_abs.long_long_abs
Failed example:
long_long_abs(-max_long_long-1)     #doctest: +ELLIPSIS
Expected:
Traceback (most recent call last):
...
OverflowError: ...
Got:
-9223372036854775808


======================================================================
FAIL: int_abs (builtin_abs)
Doctest: builtin_abs.int_abs
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.6/doctest.py", line 2199, in runTest
raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for builtin_abs.int_abs
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/cpp/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line unknown line number, in int_abs

----------------------------------------------------------------------
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/cpp/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line ?, in builtin_abs.int_abs
Failed example:
int_abs(-max_int-1)     #doctest: +ELLIPSIS
Expected:
Traceback (most recent call last):
...
OverflowError: ...
Got:
-2147483648


======================================================================
FAIL: long_abs (builtin_abs)
Doctest: builtin_abs.long_abs
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.6/doctest.py", line 2199, in runTest
raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for builtin_abs.long_abs
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/cpp/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line unknown line number, in long_abs

----------------------------------------------------------------------
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/cpp/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line ?, in builtin_abs.long_abs
Failed example:
long_abs(-max_long-1)     #doctest: +ELLIPSIS
Expected:
Traceback (most recent call last):
...
OverflowError: ...
Got:
-9223372036854775808


======================================================================
FAIL: long_long_abs (builtin_abs)
Doctest: builtin_abs.long_long_abs
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.6/doctest.py", line 2199, in runTest
raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for builtin_abs.long_long_abs
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/cpp/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line unknown line number, in long_long_abs

----------------------------------------------------------------------
File "/home/abuild/rpmbuild/BUILD/Cython-0.27.1/TEST_TMP/run/cpp/builtin_abs/builtin_abs.cpython-36m-x86_64-linux-gnu.so", line ?, in builtin_abs.long_long_abs
Failed example:
long_long_abs(-max_long_long-1)     #doctest: +ELLIPSIS
Expected:
Traceback (most recent call last):
...
OverflowError: ...
Got:
-9223372036854775808

# Fixed code
def generate_evaluation_code(self, code):
    function = self.function
    if function.is_name or function.is_attribute:
        code.globalstate.use_entry_utility_code(function.entry)

    abs_function_cnames = ("abs", "labs", "__Pyx_abs_longlong")
    is_signed_int = self.type.is_int and self.type.signed
    if (
        self.overflowcheck
        and is_signed_int
        and function.result() in abs_function_cnames
    ):
        code.globalstate.use_utility_code(
            UtilityCode.load_cached("Common", "Overflow.c")
        )
        code.putln(
            'if (unlikely(%s == __PYX_MIN(%s))) {\
                PyErr_SetString(PyExc_OverflowError,\
                                "Trying to take the absolute value of the most negative integer is not defined."); %s; }'
            % (
                self.args[0].result(),
                self.args[0].type.empty_declaration_code(),
                code.error_goto(self.pos),
            )
        )

    if (
        not function.type.is_pyobject
        or len(self.arg_tuple.args) > 1
        or (self.arg_tuple.args and self.arg_tuple.is_literal)
    ):
        super(SimpleCallNode, self).generate_evaluation_code(code)
        return

    # Special case 0-args and try to avoid explicit tuple creation for Python calls with 1 arg.
    arg = self.arg_tuple.args[0] if self.arg_tuple.args else None
    subexprs = (self.self, self.coerced_self, function, arg)
    for subexpr in subexprs:
        if subexpr is not None:
            subexpr.generate_evaluation_code(code)

    code.mark_pos(self.pos)
    assert self.is_temp
    self.allocate_temp_result(code)

    if arg is None:
        code.globalstate.use_utility_code(
            UtilityCode.load_cached("PyObjectCallNoArg", "ObjectHandling.c")
        )
        code.putln(
            "%s = __Pyx_PyObject_CallNoArg(%s); %s"
            % (
                self.result(),
                function.py_result(),
                code.error_goto_if_null(self.result(), self.pos),
            )
        )
    else:
        code.globalstate.use_utility_code(
            UtilityCode.load_cached("PyObjectCallOneArg", "ObjectHandling.c")
        )
        code.putln(
            "%s = __Pyx_PyObject_CallOneArg(%s, %s); %s"
            % (
                self.result(),
                function.py_result(),
                arg.py_result(),
                code.error_goto_if_null(self.result(), self.pos),
            )
        )

    code.put_gotref(self.py_result())

    for subexpr in subexprs:
        if subexpr is not None:
            subexpr.generate_disposal_code(code)
            subexpr.free_temps(code)