pgsql: Fix pointer cast for seed calculation on 32-bit systems

Fix pointer cast for seed calculation on 32-bit systems

The fallback seed for when pg_strong_random cannot generate a high
quality seed mixes in the address of the conn object, but the cast
failed to take the word size into consideration. Fix by casting to
a uintptr_t instead. The seed calculation was added in 7f5b19817e.

The code as it stood generated the following warning on mamba and
lapwing 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(dot)hayato(at)fujitsu(dot)com>
Discussion: https://postgr.es/m/TYAPR01MB58665250EDCD551CCA9AD117F58E9@TYAPR01MB5866.jpnprd01.prod.outlook.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/2fe7a6df94e69a20c57f71a0592133684cf612da

Modified Files
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src/interfaces/libpq/fe-connect.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)