panic: runtime error: cgo argument has Go pointer to Go pointer

[agrinman]

Hi Nik,

I believe as of Go1.6 there is a change to the way Go pointers can be passed to C code, which is causing the below runtime panic. The description of the change is here: https://golang.org/doc/go1.6#cgo.

One temporary fix is to turn-off this runtime check with GODEBUG=cgocheck=0, but I think it might be better to fix the issues directly in the code. I'm not sure how much work it is to fix or if the fix will sacrifice performance. What do you think?

Btw, your wrapper is awesome, thanks for creating it!

---

`panic: runtime error: cgo argument has Go pointer to Go pointer

goroutine 1 [running]:
panic(0x4175e0, 0xc82010f460)
/usr/local/go/src/runtime/panic.go:464 +0x3e6
github.com/Nik-U/pbc.makeUncheckedElement(0xc820116028, 0xc82010e001, 0x0, 0x346940)
/go/src/github.com/Nik-U/pbc/element.go:122 +0x15e
github.com/Nik-U/pbc.makeCheckedElement(0xc820116028, 0x0, 0x2800370, 0xc820116028)
/go/src/github.com/Nik-U/pbc/element.go:138 +0x34
github.com/Nik-U/pbc.(*Pairing).NewG1(0xc820116028, 0xc820116028)
/go/src/github.com/Nik-U/pbc/pairing.go:128 +0x39`

[Nik-U]

Hi Alex,

Thanks for the report. I've added Go 1.6 (and Go 1.7) compatibility in d3a011d. Thankfully, no performance or interface sacrifices were required.