Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go 1.8

What operating system and processor architecture are you using (go env)?

mac os 10 & ubuntu 16.04

What did you do?

package main

/*
#include <stdlib.h>
#include <stdio.h>
typedef void GLvoid;
GLvoid Foo() {
   printf("foo");
}
*/
import "C"

func main() {
   C.Foo()
}

CC=clang CGO_ENABLE=1 go build -v void.go -->fail
command-line-arguments

command-line-arguments

./void.go:47:10: error: field has incomplete type 'GLvoid' (aka 'void')

CC=gcc CGO_ENABLE=1 go build -o void -v void.go -->ok
command-line-arguments

What did you expect to see?

all build ok in both gcc and clang

What did you see instead?

clang build fail but gcc ok