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bpo-38835: Don't use PyFPE_START_PROTECT and PyFPE_END_PROTECT (GH-17231)

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The PyFPE_START_PROTECT() and PyFPE_END_PROTECT() macros are empty:
they have been doing nothing for the last year  (since commit
735ae8d139), so stop using them.
This commit is contained in:
Victor Stinner 2019-11-20 02:51:30 +01:00 committed by GitHub
parent 01b1cc12e7
commit be143ec996
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 20 additions and 101 deletions
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2
Misc/NEWS.d/next/Core and Builtins/2019-11-18-16-37-49.bpo-38835.-U4se1.rst Normal file
View file

@ -0,0 +1,2 @@
The ``PyFPE_START_PROTECT()`` and ``PyFPE_END_PROTECT()`` macros are empty:
they have been doing nothing for the last year, so stop using them.

2
Modules/_tkinter.c
View file

@ -2166,11 +2166,9 @@ _tkinter_tkapp_exprdouble_impl(TkappObject *self, const char *s)
CHECK_STRING_LENGTH(s);
CHECK_TCL_APPARTMENT;
PyFPE_START_PROTECT("Tkapp_ExprDouble", return 0)
ENTER_TCL
retval = Tcl_ExprDouble(Tkapp_Interp(self), s, &v);
ENTER_OVERLAP
PyFPE_END_PROTECT(retval)
if (retval == TCL_ERROR)
res = Tkinter_Error(self);
else

47
Modules/clinic/cmathmodule.c.h generated
View file

@ -26,9 +26,8 @@ cmath_acos(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_acos_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -69,9 +68,8 @@ cmath_acosh(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_acosh_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -112,9 +110,8 @@ cmath_asin(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_asin_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -155,9 +152,8 @@ cmath_asinh(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_asinh_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -198,9 +194,8 @@ cmath_atan(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_atan_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -241,9 +236,8 @@ cmath_atanh(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_atanh_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -284,9 +278,8 @@ cmath_cos(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_cos_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -327,9 +320,8 @@ cmath_cosh(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_cosh_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -370,9 +362,8 @@ cmath_exp(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_exp_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -413,9 +404,8 @@ cmath_log10(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_log10_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -456,9 +446,8 @@ cmath_sin(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_sin_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -499,9 +488,8 @@ cmath_sinh(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_sinh_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -542,9 +530,8 @@ cmath_sqrt(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_sqrt_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -585,9 +572,8 @@ cmath_tan(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_tan_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -628,9 +614,8 @@ cmath_tanh(PyObject *module, PyObject *arg)
goto exit;
}
/* modifications for z */
errno = 0; PyFPE_START_PROTECT("complex function", goto exit);
errno = 0;
_return_value = cmath_tanh_impl(module, z);
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -968,4 +953,4 @@ skip_optional_kwonly:
exit:
return return_value;
}
/*[clinic end generated code: output=3edc4484b10ae752 input=a9049054013a1b77]*/
/*[clinic end generated code: output=353347db2e808e0d input=a9049054013a1b77]*/

13
Modules/cmathmodule.c
View file

@ -17,7 +17,7 @@ module cmath
/*[python input]
class Py_complex_protected_converter(Py_complex_converter):
def modify(self):
return 'errno = 0; PyFPE_START_PROTECT("complex function", goto exit);'
return 'errno = 0;'
class Py_complex_protected_return_converter(CReturnConverter):
@ -26,7 +26,6 @@ class Py_complex_protected_return_converter(CReturnConverter):
def render(self, function, data):
self.declare(data)
data.return_conversion.append("""
PyFPE_END_PROTECT(_return_value);
if (errno == EDOM) {
PyErr_SetString(PyExc_ValueError, "math domain error");
goto exit;
@ -40,7 +39,7 @@ else {
}
""".strip())
[python start generated code]*/
/*[python end generated code: output=da39a3ee5e6b4b0d input=345daa075b1028e7]*/
/*[python end generated code: output=da39a3ee5e6b4b0d input=8b27adb674c08321]*/
#if (FLT_RADIX != 2 && FLT_RADIX != 16)
#error "Modules/cmathmodule.c expects FLT_RADIX to be 2 or 16"
@ -960,7 +959,6 @@ cmath_log_impl(PyObject *module, Py_complex x, PyObject *y_obj)
Py_complex y;
errno = 0;
PyFPE_START_PROTECT("complex function", return 0)
x = c_log(x);
if (y_obj != NULL) {
y = PyComplex_AsCComplex(y_obj);
@ -970,7 +968,6 @@ cmath_log_impl(PyObject *module, Py_complex x, PyObject *y_obj)
y = c_log(y);
x = _Py_c_quot(x, y);
}
PyFPE_END_PROTECT(x)
if (errno != 0)
return math_error();
return PyComplex_FromCComplex(x);
@ -1008,9 +1005,7 @@ cmath_phase_impl(PyObject *module, Py_complex z)
double phi;
errno = 0;
PyFPE_START_PROTECT("arg function", return 0)
phi = c_atan2(z);
PyFPE_END_PROTECT(phi)
if (errno != 0)
return math_error();
else
@ -1035,10 +1030,8 @@ cmath_polar_impl(PyObject *module, Py_complex z)
double r, phi;
errno = 0;
PyFPE_START_PROTECT("polar function", return 0)
phi = c_atan2(z); /* should not cause any exception */
r = _Py_c_abs(z); /* sets errno to ERANGE on overflow */
PyFPE_END_PROTECT(r)
if (errno != 0)
return math_error();
else
@ -1074,7 +1067,6 @@ cmath_rect_impl(PyObject *module, double r, double phi)
{
Py_complex z;
errno = 0;
PyFPE_START_PROTECT("rect function", return 0)
/* deal with special values */
if (!Py_IS_FINITE(r) || !Py_IS_FINITE(phi)) {
@ -1116,7 +1108,6 @@ cmath_rect_impl(PyObject *module, double r, double phi)
errno = 0;
}
PyFPE_END_PROTECT(z)
if (errno != 0)
return math_error();
else

19
Modules/mathmodule.c
View file

@ -936,9 +936,7 @@ math_1_to_whatever(PyObject *arg, double (*func) (double),
if (x == -1.0 && PyErr_Occurred())
return NULL;
errno = 0;
PyFPE_START_PROTECT("in math_1", return 0);
r = (*func)(x);
PyFPE_END_PROTECT(r);
if (Py_IS_NAN(r) && !Py_IS_NAN(x)) {
PyErr_SetString(PyExc_ValueError,
"math domain error"); /* invalid arg */
@ -972,9 +970,7 @@ math_1a(PyObject *arg, double (*func) (double))
if (x == -1.0 && PyErr_Occurred())
return NULL;
errno = 0;
PyFPE_START_PROTECT("in math_1a", return 0);
r = (*func)(x);
PyFPE_END_PROTECT(r);
if (errno && is_error(r))
return NULL;
return PyFloat_FromDouble(r);
@ -1025,9 +1021,7 @@ math_2(PyObject *const *args, Py_ssize_t nargs,
if ((x == -1.0 || y == -1.0) && PyErr_Occurred())
return NULL;
errno = 0;
PyFPE_START_PROTECT("in math_2", return 0);
r = (*func)(x, y);
PyFPE_END_PROTECT(r);
if (Py_IS_NAN(r)) {
if (!Py_IS_NAN(x) && !Py_IS_NAN(y))
errno = EDOM;
@ -1340,8 +1334,6 @@ math_fsum(PyObject *module, PyObject *seq)
if (iter == NULL)
return NULL;
PyFPE_START_PROTECT("fsum", Py_DECREF(iter); return NULL)
for(;;) { /* for x in iterable */
assert(0 <= n && n <= m);
assert((m == NUM_PARTIALS && p == ps) ||
@ -1436,7 +1428,6 @@ math_fsum(PyObject *module, PyObject *seq)
sum = PyFloat_FromDouble(hi);
_fsum_error:
PyFPE_END_PROTECT(hi)
Py_DECREF(iter);
if (p != ps)
PyMem_Free(p);
@ -2111,9 +2102,7 @@ math_frexp_impl(PyObject *module, double x)
i = 0;
}
else {
PyFPE_START_PROTECT("in math_frexp", return 0);
x = frexp(x, &i);
PyFPE_END_PROTECT(x);
}
return Py_BuildValue("(di)", x, i);
}
@ -2168,9 +2157,7 @@ math_ldexp_impl(PyObject *module, double x, PyObject *i)
errno = 0;
} else {
errno = 0;
PyFPE_START_PROTECT("in math_ldexp", return 0);
r = ldexp(x, (int)exp);
PyFPE_END_PROTECT(r);
if (Py_IS_INFINITY(r))
errno = ERANGE;
}
@ -2207,9 +2194,7 @@ math_modf_impl(PyObject *module, double x)
}
errno = 0;
PyFPE_START_PROTECT("in math_modf", return 0);
x = modf(x, &y);
PyFPE_END_PROTECT(x);
return Py_BuildValue("(dd)", x, y);
}
@ -2356,9 +2341,7 @@ math_fmod_impl(PyObject *module, double x, double y)
if (Py_IS_INFINITY(y) && Py_IS_FINITE(x))
return PyFloat_FromDouble(x);
errno = 0;
PyFPE_START_PROTECT("in math_fmod", return 0);
r = fmod(x, y);
PyFPE_END_PROTECT(r);
if (Py_IS_NAN(r)) {
if (!Py_IS_NAN(x) && !Py_IS_NAN(y))
errno = EDOM;
@ -2646,9 +2629,7 @@ math_pow_impl(PyObject *module, double x, double y)
else {
/* let libm handle finite**finite */
errno = 0;
PyFPE_START_PROTECT("in math_pow", return 0);
r = pow(x, y);
PyFPE_END_PROTECT(r);
/* a NaN result should arise only from (-ve)**(finite
non-integer); in this case we want to raise ValueError. */
if (!Py_IS_FINITE(r)) {

12
Objects/complexobject.c
View file

@ -466,9 +466,7 @@ complex_add(PyObject *v, PyObject *w)
Py_complex a, b;
TO_COMPLEX(v, a);
TO_COMPLEX(w, b);
PyFPE_START_PROTECT("complex_add", return 0)
result = _Py_c_sum(a, b);
PyFPE_END_PROTECT(result)
return PyComplex_FromCComplex(result);
}
@ -479,9 +477,7 @@ complex_sub(PyObject *v, PyObject *w)
Py_complex a, b;
TO_COMPLEX(v, a);
TO_COMPLEX(w, b);
PyFPE_START_PROTECT("complex_sub", return 0)
result = _Py_c_diff(a, b);
PyFPE_END_PROTECT(result)
return PyComplex_FromCComplex(result);
}
@ -492,9 +488,7 @@ complex_mul(PyObject *v, PyObject *w)
Py_complex a, b;
TO_COMPLEX(v, a);
TO_COMPLEX(w, b);
PyFPE_START_PROTECT("complex_mul", return 0)
result = _Py_c_prod(a, b);
PyFPE_END_PROTECT(result)
return PyComplex_FromCComplex(result);
}
@ -505,10 +499,8 @@ complex_div(PyObject *v, PyObject *w)
Py_complex a, b;
TO_COMPLEX(v, a);
TO_COMPLEX(w, b);
PyFPE_START_PROTECT("complex_div", return 0)
errno = 0;
quot = _Py_c_quot(a, b);
PyFPE_END_PROTECT(quot)
if (errno == EDOM) {
PyErr_SetString(PyExc_ZeroDivisionError, "complex division by zero");
return NULL;
@ -547,7 +539,6 @@ complex_pow(PyObject *v, PyObject *w, PyObject *z)
PyErr_SetString(PyExc_ValueError, "complex modulo");
return NULL;
}
PyFPE_START_PROTECT("complex_pow", return 0)
errno = 0;
exponent = b;
int_exponent = (long)exponent.real;
@ -556,7 +547,6 @@ complex_pow(PyObject *v, PyObject *w, PyObject *z)
else
p = _Py_c_pow(a, exponent);
PyFPE_END_PROTECT(p)
Py_ADJUST_ERANGE2(p.real, p.imag);
if (errno == EDOM) {
PyErr_SetString(PyExc_ZeroDivisionError,
@ -604,9 +594,7 @@ complex_abs(PyComplexObject *v)
{
double result;
PyFPE_START_PROTECT("complex_abs", return 0)
result = _Py_c_abs(v->cval);
PyFPE_END_PROTECT(result)
if (errno == ERANGE) {
PyErr_SetString(PyExc_OverflowError,

20
Objects/floatobject.c
View file

@ -506,7 +506,6 @@ float_richcompare(PyObject *v, PyObject *w, int op)
goto Unimplemented;
Compare:
PyFPE_START_PROTECT("richcompare", return NULL)
switch (op) {
case Py_EQ:
r = i == j;
@ -527,7 +526,6 @@ float_richcompare(PyObject *v, PyObject *w, int op)
r = i > j;
break;
}
PyFPE_END_PROTECT(r)
return PyBool_FromLong(r);
Unimplemented:
@ -546,9 +544,7 @@ float_add(PyObject *v, PyObject *w)
double a,b;
CONVERT_TO_DOUBLE(v, a);
CONVERT_TO_DOUBLE(w, b);
PyFPE_START_PROTECT("add", return 0)
a = a + b;
PyFPE_END_PROTECT(a)
return PyFloat_FromDouble(a);
}
@ -558,9 +554,7 @@ float_sub(PyObject *v, PyObject *w)
double a,b;
CONVERT_TO_DOUBLE(v, a);
CONVERT_TO_DOUBLE(w, b);
PyFPE_START_PROTECT("subtract", return 0)
a = a - b;
PyFPE_END_PROTECT(a)
return PyFloat_FromDouble(a);
}
@ -570,9 +564,7 @@ float_mul(PyObject *v, PyObject *w)
double a,b;
CONVERT_TO_DOUBLE(v, a);
CONVERT_TO_DOUBLE(w, b);
PyFPE_START_PROTECT("multiply", return 0)
a = a * b;
PyFPE_END_PROTECT(a)
return PyFloat_FromDouble(a);
}
@ -587,9 +579,7 @@ float_div(PyObject *v, PyObject *w)
"float division by zero");
return NULL;
}
PyFPE_START_PROTECT("divide", return 0)
a = a / b;
PyFPE_END_PROTECT(a)
return PyFloat_FromDouble(a);
}
@ -605,7 +595,6 @@ float_rem(PyObject *v, PyObject *w)
"float modulo");
return NULL;
}
PyFPE_START_PROTECT("modulo", return 0)
mod = fmod(vx, wx);
if (mod) {
/* ensure the remainder has the same sign as the denominator */
@ -619,7 +608,6 @@ float_rem(PyObject *v, PyObject *w)
it has the same sign as the denominator. */
mod = copysign(0.0, wx);
}
PyFPE_END_PROTECT(mod)
return PyFloat_FromDouble(mod);
}
@ -634,7 +622,6 @@ float_divmod(PyObject *v, PyObject *w)
PyErr_SetString(PyExc_ZeroDivisionError, "float divmod()");
return NULL;
}
PyFPE_START_PROTECT("divmod", return 0)
mod = fmod(vx, wx);
/* fmod is typically exact, so vx-mod is *mathematically* an
exact multiple of wx. But this is fp arithmetic, and fp
@ -666,7 +653,6 @@ float_divmod(PyObject *v, PyObject *w)
/* div is zero - get the same sign as the true quotient */
floordiv = copysign(0.0, vx / wx); /* zero w/ sign of vx/wx */
}
PyFPE_END_PROTECT(floordiv)
return Py_BuildValue("(dd)", floordiv, mod);
}
@ -793,9 +779,7 @@ float_pow(PyObject *v, PyObject *w, PyObject *z)
* the platform pow to step in and do the rest.
*/
errno = 0;
PyFPE_START_PROTECT("pow", return NULL)
ix = pow(iv, iw);
PyFPE_END_PROTECT(ix)
Py_ADJUST_ERANGE1(ix);
if (negate_result)
ix = -ix;
@ -849,9 +833,7 @@ float_is_integer_impl(PyObject *self)
if (!Py_IS_FINITE(x))
Py_RETURN_FALSE;
errno = 0;
PyFPE_START_PROTECT("is_integer", return NULL)
o = (floor(x) == x) ? Py_True : Py_False;
PyFPE_END_PROTECT(x)
if (errno != 0) {
PyErr_SetFromErrno(errno == ERANGE ? PyExc_OverflowError :
PyExc_ValueError);
@ -1567,9 +1549,7 @@ float_as_integer_ratio_impl(PyObject *self)
return NULL;
}
PyFPE_START_PROTECT("as_integer_ratio", goto error);
float_part = frexp(self_double, &exponent); /* self_double == float_part * 2**exponent exactly */
PyFPE_END_PROTECT(float_part);
for (i=0; i<300 && float_part != floor(float_part) ; i++) {
float_part *= 2.0;

4
Python/bltinmodule.c
View file

@ -2385,9 +2385,7 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start)
return PyFloat_FromDouble(f_result);
}
if (PyFloat_CheckExact(item)) {
PyFPE_START_PROTECT("add", Py_DECREF(item); Py_DECREF(iter); return 0)
f_result += PyFloat_AS_DOUBLE(item);
PyFPE_END_PROTECT(f_result)
Py_DECREF(item);
continue;
}
@ -2396,9 +2394,7 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start)
int overflow;
value = PyLong_AsLongAndOverflow(item, &overflow);
if (!overflow) {
PyFPE_START_PROTECT("add", Py_DECREF(item); Py_DECREF(iter); return 0)
f_result += (double)value;
PyFPE_END_PROTECT(f_result)
Py_DECREF(item);
continue;
}

2
Python/pystrtod.c
View file

@ -342,9 +342,7 @@ PyOS_string_to_double(const char *s,
char *fail_pos;
errno = 0;
PyFPE_START_PROTECT("PyOS_string_to_double", return -1.0)
x = _PyOS_ascii_strtod(s, &fail_pos);
PyFPE_END_PROTECT(x)
if (errno == ENOMEM) {
PyErr_NoMemory();