Issue #11235: Fix OverflowError when trying to import a source file whose modification time doesn't fit in a 32-bit timestamp.
diff --git a/Python/import.c b/Python/import.c
index c60ecfe..0e82390 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -981,14 +981,11 @@
}
#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");
- return NULL;
- }
+ st.st_mtime &= 0xFFFFFFFF;
#endif
cpathname = make_compiled_pathname(pathname, buf,
(size_t)MAXPATHLEN + 1);