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Issue #22156: Fix "comparison between signed and unsigned integers" compiler

Browse source 
warnings in the Objects/ subdirectory.

PyType_FromSpecWithBases() and PyType_FromSpec() now reject explicitly negative
slot identifiers.
This commit is contained in:
Victor Stinner 2014-08-15 23:17:38 +02:00
parent 98ea54c35c
commit 12174a5dca
5 changed files with 13 additions and 12 deletions
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2
Objects/exceptions.c
View file

@ -2714,7 +2714,7 @@ _PyErr_TrySetFromCause(const char *format, ...)
same_basic_size = (
caught_type_size == base_exc_size ||
(PyType_SUPPORTS_WEAKREFS(caught_type) &&
(caught_type_size == base_exc_size + sizeof(PyObject *))
(caught_type_size == base_exc_size + (Py_ssize_t)sizeof(PyObject *))
)
);
if (caught_type->tp_init != (initproc)BaseException_init ||

4
Objects/longobject.c
View file

@ -5094,13 +5094,13 @@ _PyLong_Init(void)
* to the original refcnt + 1 */
Py_REFCNT(op) = refcnt + 1;
assert(Py_SIZE(op) == size);
assert(v->ob_digit[0] == abs(ival));
assert(v->ob_digit[0] == (digit)abs(ival));
}
else {
(void)PyObject_INIT(v, &PyLong_Type);
}
Py_SIZE(v) = size;
v->ob_digit[0] = abs(ival);
v->ob_digit[0] = (digit)abs(ival);
}
#endif
/* initialize int_info */

2
Objects/setobject.c
View file

@ -771,7 +771,7 @@ frozenset_hash(PyObject *self)
/* Make the final result spread-out in a different pattern
than the algorithm for tuples or other python objects. */
hash = hash * 69069U + 907133923UL;
if (hash == -1)
if (hash == (Py_uhash_t)-1)
hash = 590923713UL;
so->hash = hash;
return hash;

7
Objects/typeobject.c
View file

@ -2622,7 +2622,8 @@ PyType_FromSpecWithBases(PyType_Spec *spec, PyObject *bases)
type->tp_itemsize = spec->itemsize;
for (slot = spec->slots; slot->slot; slot++) {
if (slot->slot >= Py_ARRAY_LENGTH(slotoffsets)) {
if (slot->slot < 0
|| (size_t)slot->slot >= Py_ARRAY_LENGTH(slotoffsets)) {
PyErr_SetString(PyExc_RuntimeError, "invalid slot offset");
goto fail;
}
@ -2682,11 +2683,11 @@ PyType_FromSpec(PyType_Spec *spec)
void *
PyType_GetSlot(PyTypeObject *type, int slot)
{
if (!PyType_HasFeature(type, Py_TPFLAGS_HEAPTYPE)) {
if (!PyType_HasFeature(type, Py_TPFLAGS_HEAPTYPE) || slot < 0) {
PyErr_BadInternalCall();
return NULL;
}
if (slot >= Py_ARRAY_LENGTH(slotoffsets)) {
if ((size_t)slot >= Py_ARRAY_LENGTH(slotoffsets)) {
/* Extension module requesting slot from a future version */
return NULL;
}

10
Objects/unicodeobject.c
View file

@ -3519,7 +3519,7 @@ PyUnicode_DecodeLocaleAndSize(const char *str, Py_ssize_t len,
if (locale_error_handler(errors, &surrogateescape) < 0)
return NULL;
if (str[len] != '\0' || len != strlen(str)) {
if (str[len] != '\0' || (size_t)len != strlen(str)) {
PyErr_SetString(PyExc_TypeError, "embedded null character");
return NULL;
}
@ -3696,7 +3696,7 @@ PyUnicode_FSConverter(PyObject* arg, void* addr)
}
size = PyBytes_GET_SIZE(output);
data = PyBytes_AS_STRING(output);
if (size != strlen(data)) {
if ((size_t)size != strlen(data)) {
PyErr_SetString(PyExc_TypeError, "embedded NUL character");
Py_DECREF(output);
return 0;
@ -8874,7 +8874,7 @@ PyUnicode_TransformDecimalToASCII(Py_UNICODE *s,
maxchar = 127;
for (i = 0; i < length; i++) {
Py_UNICODE ch = s[i];
Py_UCS4 ch = s[i];
if (ch > 127) {
int decimal = Py_UNICODE_TODECIMAL(ch);
if (decimal >= 0)
@ -8891,7 +8891,7 @@ PyUnicode_TransformDecimalToASCII(Py_UNICODE *s,
data = PyUnicode_DATA(decimal);
/* Iterate over code points */
for (i = 0; i < length; i++) {
Py_UNICODE ch = s[i];
Py_UCS4 ch = s[i];
if (ch > 127) {
int decimal = Py_UNICODE_TODECIMAL(ch);
if (decimal >= 0)
@ -10833,7 +10833,7 @@ PyUnicode_CompareWithASCIIString(PyObject* uni, const char* str)
void *data = PyUnicode_DATA(uni);
/* Compare Unicode string and source character set string */
for (i = 0; (chr = PyUnicode_READ(kind, data, i)) && str[i]; i++)
if (chr != str[i])
if (chr != (unsigned char)str[i])
return (chr < (unsigned char)(str[i])) ? -1 : 1;
/* This check keeps Python strings that end in '\0' from comparing equal
to C strings identical up to that point. */