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Added checks for integer overflows, contributed by Google. Some are

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only available if asserts are left in the code, in cases where they
can't be triggered from Python code.
This commit is contained in:
Martin v. Löwis 2008-02-14 11:26:18 +00:00
parent abcb59a1d8
commit 73c01d4101
25 changed files with 464 additions and 59 deletions
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3
Python/ast.c
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@ -3130,6 +3130,9 @@ decode_unicode(const char *s, size_t len, int rawmode, const char *encoding)
buf = (char *)s;
u = NULL;
} else {
/* check for integer overflow */
if (len > PY_SIZE_MAX / 4)
return NULL;
/* "\XX" may become "\u005c\uHHLL" (12 bytes) */
u = PyString_FromStringAndSize((char *)NULL, len * 4);
if (u == NULL)