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Merged revisions 75931 via svnmerge from

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svn+ssh://pythondev@svn.python.org/python/trunk

........
  r75931 | benjamin.peterson | 2009-10-28 20:49:07 -0500 (Wed, 28 Oct 2009) | 5 lines

  do a backport of r75928

  The added test does not fail without the patch, but we still fix the issue of
  surrogates being used in wide builds where they should not be.
........
This commit is contained in:
Benjamin Peterson 2009-10-29 02:02:47 +00:00
parent e7228d3e01
commit c717aec772
2 changed files with 49 additions and 39 deletions
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21
Python/ast.c
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@ -3248,10 +3248,11 @@ decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, cons
u = NULL;
} else {
/* check for integer overflow */
if (len > PY_SIZE_MAX / 4)
if (len > PY_SIZE_MAX / 6)
return NULL;
/* "\XX" may become "\u005c\uHHLL" (12 bytes) */
u = PyString_FromStringAndSize((char *)NULL, len * 4);
/* "<C3><A4>" (2 bytes) may become "\U000000E4" (10 bytes), or 1:5
"\ä" (3 bytes) may become "\u005c\U000000E4" (16 bytes), or ~1:6 */
u = PyString_FromStringAndSize((char *)NULL, len * 6);
if (u == NULL)
return NULL;
p = buf = PyString_AsString(u);
@ -3268,19 +3269,21 @@ decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, cons
PyObject *w;
char *r;
Py_ssize_t rn, i;
w = decode_utf8(c, &s, end, "utf-16-be");
w = decode_utf8(c, &s, end, "utf-32-be");
if (w == NULL) {
Py_DECREF(u);
return NULL;
}
r = PyString_AsString(w);
rn = PyString_Size(w);
assert(rn % 2 == 0);
for (i = 0; i < rn; i += 2) {
sprintf(p, "\\u%02x%02x",
assert(rn % 4 == 0);
for (i = 0; i < rn; i += 4) {
sprintf(p, "\\U%02x%02x%02x%02x",
r[i + 0] & 0xFF,
r[i + 1] & 0xFF);
p += 6;
r[i + 1] & 0xFF,
r[i + 2] & 0xFF,
r[i + 3] & 0xFF);
p += 10;
}
Py_DECREF(w);
} else {