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Issue #11235: Fix OverflowError when trying to import a source file whose modification time doesn't fit in a 32-bit timestamp.

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This commit is contained in:
Antoine Pitrou 2012-01-24 17:45:50 +01:00
commit abaf89b2be
4 changed files with 36 additions and 7 deletions
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11
Python/import.c
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@ -1478,14 +1478,11 @@ load_source_module(PyObject *name, PyObject *pathname, FILE *fp)
}
#if SIZEOF_TIME_T > 4
/* Python's .pyc timestamp handling presumes that the timestamp fits
in 4 bytes. This will be fine until sometime in the year 2038,
when a 4-byte signed time_t will overflow.
in 4 bytes. Since the code only does an equality comparison,
ordering is not important and we can safely ignore the higher bits
(collisions are extremely unlikely).
*/
if (st.st_mtime >> 32) {
PyErr_SetString(PyExc_OverflowError,
"modification time overflows a 4 byte field");
goto error;
}
st.st_mtime &= 0xFFFFFFFF;
#endif
if (PyUnicode_READY(pathname) < 0)
return NULL;