What steps will reproduce the problem?

package main

import (
        "reflect"
)

type aStruct struct{}

func StructReturn() aStruct {
        return aStruct{}
}

func main() {
        f := reflect.ValueOf(StructReturn)
        f.Call([]reflect.Value{})
}

What is the expected output? What do you see instead?

% go run -compiler gc yy.go 

// works

% go run -compiler gccgo yy.go 
../../../gccgo/libgo/runtime/go-reflect-call.c:339: libgo assertion failure
Aborted

reflect.call
        ../../../gccgo/libgo/runtime/go-reflect-call.c:532
reflect.call.N13_reflect.Value
        ../../../gccgo/libgo/go/reflect/value.go:482
reflect.Call.N13_reflect.Value
        ../../../gccgo/libgo/go/reflect/value.go:341
main.main
        /home/dfc/src/yy.go:15
exit status 2

Please use labels and text to provide additional information.

 % gccgo -v
Using built-in specs.
COLLECT_GCC=gccgo
COLLECT_LTO_WRAPPER=/opt/gccgo/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gccgo/configure --prefix=/opt/gccgo --enable-languages=c,c++,go
--with-ld=/usr/bin/ld : (reconfigured) ../gccgo/configure --prefix=/opt/gccgo
--enable-languages=c,c++,go --with-ld=/usr/bin/ld
Thread model: posix
gcc version 4.9.0 20131109 (experimental) (GCC) 

Credit to Michael Hudson-Doyle for the test case.