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Changed overflow check to use PY_SSIZE_T_MAX#3964

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hugovk merged 1 commit intopython-pillow:masterfrom
radarhere:map_ysize
Jul 17, 2019
Merged

Changed overflow check to use PY_SSIZE_T_MAX#3964
hugovk merged 1 commit intopython-pillow:masterfrom
radarhere:map_ysize

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Resolves #3963

The check was added in c50ebe6 to fix #2105. This PR should be updating the range for 64-bit systems.

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MemoryError: Integer overflow in ysize Multiple memory corruption vulnerabilities

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