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Fix pointer cast for seed calculation on 32-bit systems
The fallback seed for when pg_strong_random cannot generate a highquality seed mixes in the address of the conn object, but the castfailed to take the word size into consideration. Fix by casting toa uintptr_t instead. The seed calculation was added in7f5b198.The code as it stood generated the following warning on mamba andlapwing in the buildfarm:fe-connect.c: In function 'libpq_prng_init':fe-connect.c:1048:11: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]1048 | rseed = ((uint64) conn) ^ | ^Author: Hayato Kuroda <kuroda.hayato@fujitsu.com>Discussion:https://postgr.es/m/TYAPR01MB58665250EDCD551CCA9AD117F58E9@TYAPR01MB5866.jpnprd01.prod.outlook.com1 parent261cf89 commit2fe7a6d
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