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and back to the "magic" formula (with a comment) it is

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Benjamin Peterson 2011-11-23 10:44:52 -06:00
parent d2b0217944
commit 1518e8713d
1 changed files with 3 additions and 15 deletions
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18
Objects/unicodeobject.c
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@ -6164,21 +6164,9 @@ PyUnicode_AsRawUnicodeEscapeString(PyObject *unicode)
kind = PyUnicode_KIND(unicode); kind = PyUnicode_KIND(unicode);
data = PyUnicode_DATA(unicode); data = PyUnicode_DATA(unicode);
len = PyUnicode_GET_LENGTH(unicode); len = PyUnicode_GET_LENGTH(unicode);
expandsize = 0; /* 4 byte characters can take up 10 bytes, 2 byte characters can take up 6
switch (kind) { bytes, and 1 byte characters 4. */
case PyUnicode_1BYTE_KIND: expandsize = kind * 2 + 2;
expandsize = 4;
break;
case PyUnicode_2BYTE_KIND:
expandsize = 6;
break;
case PyUnicode_4BYTE_KIND:
expandsize = 10;
break;
default:
assert(0);
break;
}
if (len > PY_SSIZE_T_MAX / expandsize) if (len > PY_SSIZE_T_MAX / expandsize)
return PyErr_NoMemory(); return PyErr_NoMemory();