gotypes,tests: test case for issue #195 (#214)

Adds test cases for the bug in #195, similar to #212.

Updates #195
Updates #191

tests/fixedbugs/issue195/asm.go

@@ -0,0 +1,15 @@
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	. "github.com/mmcloughlin/avo/build"
+)
+
+func main() {
+	TEXT("Issue195", NOSPLIT|NOFRAME, "func(x *uint64, y uint32)")
+	Doc("Issue195 tests for correct argument size.")
+	RET()
+	Generate()
+}

tests/fixedbugs/issue195/doc.go

@@ -0,0 +1,3 @@
+// Package issue195 tests for correct argument size for a function without
+// return types. This test is closely related to issue #191.
+package issue195

tests/fixedbugs/issue195/issue195.s

@@ -0,0 +1,7 @@
+// Code generated by command: go run asm.go -out issue195.s -stubs stub.go. DO NOT EDIT.
+
+#include "textflag.h"
+
+// func Issue195(x *uint64, y uint32)
+TEXT ·Issue195(SB), NOSPLIT|NOFRAME, $0-12
+	RET

tests/fixedbugs/issue195/issue195_test.go

@@ -0,0 +1,10 @@
+package issue195
+
+import "testing"
+
+//go:generate go run asm.go -out issue195.s -stubs stub.go
+
+func TestIssue195(t *testing.T) {
+	x := uint64(42)
+	Issue195(&x, 42)
+}

tests/fixedbugs/issue195/stub.go

@@ -0,0 +1,6 @@
+// Code generated by command: go run asm.go -out issue195.s -stubs stub.go. DO NOT EDIT.
+
+package issue195
+
+// Issue195 tests for correct argument size.
+func Issue195(x *uint64, y uint32)