I just optimized PyFloat_PackN() C functions in Python using __builtin_bswapN() to swap bytes. Problem: GCC does crash and clang miscompiles the 16-bit function which uses _Float16 on IBM s390x! GCC bug report: bugzilla.redhat.com/show_bug.cgi... clang bug report: github.com/llvm/llvm-pr...
bugzilla.redhat.com
2544649 – GCC crash on s390x when building a C function which uses _Float16/uint16_t, memcpy() and __builtin_bswap16()
![Example pprint without and with expand=True.
>>> pprint(config)
{'allowed_origins': ['https://app.example.com', 'https://admin.example.com'],
'database': {'engine': 'postgresql',
'host': 'db-primary.internal',
'pool': {'overflow': 10, 'size': 20, 'timeout': 30}},
'host': 'api.example.com',
'logging': {'handlers': ['console', 'file', 'syslog'], 'level': 'INFO'},
'port': 8443}
>>>
>>> pprint(config, expand=True)
{
'allowed_origins': ['https://app.example.com', 'https://admin.example.com'],
'database': {
'engine': 'postgresql',
'host': 'db-primary.internal',
'pool': {'overflow': 10, 'size': 20, 'timeout': 30},
},
'host': 'api.example.com',
'logging': {'handlers': ['console', 'file', 'syslog'], 'level': 'INFO'},
'port': 8443,
}](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:3yxbv667vvngelzbmtphu6lf/bafkreiaz6mrzb2criq2lmge4x2d2wumxbbldlc45uhnxtp6e77bpufsm7i)
