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longobject.c: add an assertion to ensure that MEDIUM_VALUE() is only called on

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small integers (0 or 1 digit)
This commit is contained in:
Victor Stinner 2013-07-17 22:33:42 +02:00
parent 8aed6f1c7d
commit 08a80b11ad
1 changed files with 2 additions and 1 deletions
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3
Objects/longobject.c
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@ -17,7 +17,8 @@
#endif
/* convert a PyLong of size 1, 0 or -1 to an sdigit */
#define MEDIUM_VALUE(x) (Py_SIZE(x) < 0 ? -(sdigit)(x)->ob_digit[0] : \
#define MEDIUM_VALUE(x) (assert(-1 <= Py_SIZE(x) && Py_SIZE(x) <= 1), \
Py_SIZE(x) < 0 ? -(sdigit)(x)->ob_digit[0] : \
(Py_SIZE(x) == 0 ? (sdigit)0 : \
(sdigit)(x)->ob_digit[0]))
#define ABS(x) ((x) < 0 ? -(x) : (x))