arm/386 build fail

[sjatsh]

github.com/pingcap/tidb/mysql

mysql\const.go:498:2: constant 2147483648 overflows SQLMode
mysql\const.go:499:2: constant 4294967296 overflows SQLMode
mysql\util.go:44:19: constant 4294967295 overflows int
mysql\util.go:45:19: constant 4294967295 overflows int

[tiancaiamao]

In production environment, TiDB is usually used under linux/64bit, we don't release or provide maintenance for other system/platform.
Many of us use osx for developing, that's okay, but arm/386 is not tested.
If you're interested, welcome to send a PR to fix it.
@JonesSun

[shenli]

We do not consider i386 platform. It is rarely used in production environment.