If all of the Go files presented to the compiler have syntax errors,
cgo.Process gets an empty files slice and will panic:
panic: runtime error: index out of range [0] with length 0
goroutine 1 [running]:
github.com/tinygo-org/tinygo/cgo.Process({0x0, 0x4e8e36, 0x0}, {0xc000024104, 0x18}, 0xc000090fc0, {0xc000899780, 0x7, 0xc00018ce68})
/home/ayke/src/github.com/tinygo-org/tinygo/cgo/cgo.go:186 +0x22ee
github.com/tinygo-org/tinygo/loader.(*Package).parseFiles(0xc0001ccf00)
/home/ayke/src/github.com/tinygo-org/tinygo/loader/loader.go:400 +0x51e
This is simple to work around: just don't try to run CGo when there are
no files to process. It just means there are bugs to fix before CGo can
properly run.
(This is perhaps not the nicest solution but certainly the simplest).
c7c874a487