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| author | Daniel Gustafsson <dgustafsson@postgresql.org> | 2023-03-30 10:53:15 +0200 |
|---|---|---|
| committer | Daniel Gustafsson <dgustafsson@postgresql.org> | 2023-03-30 10:53:15 +0200 |
| commit | 2fe7a6df94e69a20c57f71a0592133684cf612da (patch) | |
| tree | 31efb4dd541357a30c965c3dba4d9c39eb4997e0 /src/interfaces/libpq/fe-connect.c | |
| parent | 261cf8962b8ce92ce62c47148bd72a2c2e3351b0 (diff) | |
| download | postgresql-2fe7a6df94e69a20c57f71a0592133684cf612da.tar.gz postgresql-2fe7a6df94e69a20c57f71a0592133684cf612da.zip | |
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.hayato@fujitsu.com>
Discussion: https://postgr.es/m/TYAPR01MB58665250EDCD551CCA9AD117F58E9@TYAPR01MB5866.jpnprd01.prod.outlook.com
Diffstat (limited to 'src/interfaces/libpq/fe-connect.c')
| -rw-r--r-- | src/interfaces/libpq/fe-connect.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/interfaces/libpq/fe-connect.c b/src/interfaces/libpq/fe-connect.c index a13ec16b321..bb7347cb0c0 100644 --- a/src/interfaces/libpq/fe-connect.c +++ b/src/interfaces/libpq/fe-connect.c @@ -1045,7 +1045,7 @@ libpq_prng_init(PGconn *conn) gettimeofday(&tval, NULL); - rseed = ((uint64) conn) ^ + rseed = ((uintptr_t) conn) ^ ((uint64) getpid()) ^ ((uint64) tval.tv_usec) ^ ((uint64) tval.tv_sec); |