1 files changed, 42 insertions, 0 deletions
diff --git a/misc/cgo/test/issue27340/a.go b/misc/cgo/test/issue27340/a.go
new file mode 100644
index 0000000..f5b120c
--- /dev/null
+++ b/misc/cgo/test/issue27340/a.go
@@ -0,0 +1,42 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Failed to resolve typedefs consistently.
+// No runtime test; just make sure it compiles.
+// In separate directory to isolate #pragma GCC diagnostic.
+
+package issue27340
+
+// We use the #pragma to avoid a compiler warning about incompatible
+// pointer types, because we generate code passing a struct ptr rather
+// than using the typedef. This warning is expected and does not break
+// a normal build.
+// We can only disable -Wincompatible-pointer-types starting with GCC 5.
+
+// #if __GNU_MAJOR__ >= 5
+//
+// #pragma GCC diagnostic ignored "-Wincompatible-pointer-types"
+//
+// typedef struct {
+// 	int a;
+// } issue27340Struct, *issue27340Ptr;
+//
+// static void issue27340CFunc(issue27340Ptr p) {}
+//
+// #else /* _GNU_MAJOR_ < 5 */
+//
+// typedef struct {
+// 	int a;
+// } issue27340Struct;
+//
+// static issue27340Struct* issue27340Ptr(issue27340Struct* p) { return p; }
+//
+// static void issue27340CFunc(issue27340Struct *p) {}
+// #endif /* _GNU_MAJOR_ < 5 */
+import "C"
+
+func Issue27340GoFunc() {
+	var s C.issue27340Struct
+	C.issue27340CFunc(C.issue27340Ptr(&s))
+}