'syscall' package cant use GAE/Go.

[LosPas]

Issue description

Thank you for always for your kind support.

my product use GAE/Go.
GAE/Go not allow 'syscall' package.
#934 change contained using 'syscall'.

I would appreciate it if you could fix this issue.

Error Log

go-app-builder: Failed parsing input: parser: bad import "syscall" in github.com/go-sql-driver/mysql/conncheck.go

[Marc3001]

We are seeing same kind of issue on our side with this error when trying to compile a project depending on mysql go connector

go-sql-driver/mysql/conncheck.go:29: undefined: syscall.Conn

We are using go 1.8.5.

[methane]

@Marc3001 #869

[LosPas]

FYI
When used with GAE/Go, it is not permitted regardless of the go version.
Because Google App Engine doesn't allow to import syscall for security reason.

The majority of pure Go packages work on Google App Engine. A package may not work >because of one of these reasons:

• The package imports syscall or unsafe.
• The package uses cgo or assembly.
• The package requires functions in packages that are locked down, such as writing to disk, or direct network access.

In https://cloud.google.com/appengine/kb/, I could find those restrictions.

[methane]

When used with GAE/Go, it is not permitted regardless of the go version.

No. This issue is specific to Go 1.9 runtime.

Go 1.11 and 1.12beta runtime uses 2nd generation GAE.
It allows importing any package.

[methane]

Of course, we support Go 1.9 in master branch yet and this is a bug.

[methane]

@LosPas Please try #950.
I am not AppEngine user. So I can not test it.

[LosPas]

@methane
I'm sorry for the delay in my reply.
I confirmed there are working correctly.
You've done a great job. Thanks!