Won't compile on Mavericks 10.9.3 about ui

[cryptix]

What go version are you trying? I just build
go version devel +c8e9255aed3f Thu Jun 05 16:40:23 2014 -0400 darwin/amd64

and all i get is this during go get github.com/andlabs/ui

# github.com/andlabs/ui
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x1a2fd]

goroutine 16 [running]:
runtime.panic(0x268ce0, 0x40afc4)
    /Users/cryptix/gotip/src/pkg/runtime/panic.c:279 +0xf5
main.(*typeConv).Type(0xc2080502c0, 0x4bf6d8, 0xc20810c5d0, 0x1e3a, 0x1)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1288 +0x1f2d
main.(*typeConv).Type(0xc2080502c0, 0x4bf630, 0xc20810c570, 0x1e3a, 0xc208190101)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1189 +0x5a8e
main.(*typeConv).Type(0xc2080502c0, 0x4bf840, 0xc208103f40, 0x1e3a, 0x0)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1075 +0x5268
main.(*typeConv).Struct(0xc2080502c0, 0xc2081724e0, 0x1e3a, 0x6, 0x0, 0x0, 0x8)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1551 +0x8e9
main.(*typeConv).Type(0xc2080502c0, 0x4bf770, 0xc2081724e0, 0x1e3a, 0xc208190201)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1234 +0x4646
main.(*typeConv).Type(0xc2080502c0, 0x4bf630, 0xc20810c420, 0x1e3a, 0x0)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1189 +0x5a8e
main.(*typeConv).Struct(0xc2080502c0, 0xc208005e00, 0x1e3a, 0x6, 0x0, 0x0, 0x8)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1551 +0x8e9
main.(*typeConv).Type(0xc2080502c0, 0x4bf770, 0xc208005e00, 0x1e3a, 0xe5101)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1234 +0x4646
main.(*typeConv).Type(0xc2080502c0, 0x4bf630, 0xc208092c30, 0x1e3a, 0xc2080fb070)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1189 +0x5a8e
main.(*typeConv).Type(0xc2080502c0, 0x4bf6d8, 0xc208092a20, 0x1e3a, 0x32c200)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1269 +0x194e
main.(*typeConv).Struct(0xc2080502c0, 0xc208005ce0, 0x1e3a, 0x6, 0x0, 0x0, 0x0)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1551 +0x8e9
main.(*typeConv).Type(0xc2080502c0, 0x4bf770, 0xc208005ce0, 0x1e3a, 0x32c201)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1234 +0x4646
main.(*typeConv).Type(0xc2080502c0, 0x4bf630, 0xc2080926f0, 0x1e3a, 0xc2080fb060)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1189 +0x5a8e
main.(*typeConv).Type(0xc2080502c0, 0x4bf6d8, 0xc2080925d0, 0x1e3a, 0x4aa000)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1269 +0x194e
main.(*typeConv).FuncArg(0xc2080502c0, 0x4bf6d8, 0xc2080925d0, 0x1e3a, 0x1)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1405 +0x6a
main.(*typeConv).FuncType(0xc2080502c0, 0xc2081033c0, 0x1e3a, 0xc2081033c0)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:1458 +0x7b2
main.(*Package).loadDWARF(0xc208001e10, 0xc20804c080, 0xc20800ef00, 0x19, 0x20)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:539 +0x19cf
main.(*Package).Translate(0xc208001e10, 0xc20804c080)
    /Users/cryptix/gotip/src/cmd/cgo/gcc.go:182 +0x1f0
main.main()
    /Users/cryptix/gotip/src/cmd/cgo/main.go:259 +0x1393

goroutine 19 [finalizer wait]:
runtime.park(0x60890, 0x410500, 0x40e849)
    /Users/cryptix/gotip/src/pkg/runtime/proc.c:1369 +0x89
runtime.parkunlock(0x410500, 0x40e849)
    /Users/cryptix/gotip/src/pkg/runtime/proc.c:1385 +0x3b
runfinq()
    /Users/cryptix/gotip/src/pkg/runtime/mgc0.c:2644 +0xcf
runtime.goexit()
    /Users/cryptix/gotip/src/pkg/runtime/proc.c:1445

[vessenes]

go version go1.2 darwin/amd64

[andlabs]

Right, package ui won't work with Go 1.2 because Go 1.3 is the one that added Objective-C support. I'll make that clear when updating the README.

@cryptix's panic is coming from cgo itself; I'll need to update and investigate myself, but that'll likely be moved over to the Go issue tracker itself.

It doesn't work on OSX with Go 1.3r2, either; same error as @cryptix

1205)~ % go version
go version go1.3rc2 darwin/amd64
1205)~ % go get github.com/andlabs/ui
# github.com/andlabs/ui
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x15672]

goroutine 16 [running]:
runtime.panic(0x1da9c0, 0x31a9e4)
        /Users/ser/Software/go/src/pkg/runtime/panic.c:279 +0xf5
...

[emilgpa]

Same error here as @cryptix @serussell, with go 1.3 stable and OS X 10.9.3.

[andlabs]

Can reproduce on 10.8. Crash in cgo; will investigate now.

[andlabs]

Upon further investigation this is a cgo bug. From what I can tell, everything on the offending line is valid at the time of the crash, except for the full result of the typedef[...] expression, which is nil...

Go bug filed: https://code.google.com/p/go/issues/detail?id=8238