3 files changed, 57 insertions, 0 deletions
diff --git a/test/runtime.go b/test/runtime.go
new file mode 100644
index 0000000..58a5eee
--- /dev/null
+++ b/test/runtime.go
@@ -0,0 +1,21 @@
+// errorcheck
+
+// Copyright 2009 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.
+
+// Test that even if a file imports runtime,
+// it cannot get at the low-level runtime definitions
+// known to the compiler.  For normal packages
+// the compiler doesn't even record the lower case
+// functions in its symbol table, but some functions
+// in runtime are hard-coded into the compiler.
+// Does not compile.
+
+package main
+
+import "runtime"
+
+func main() {
+	runtime.printbool(true)	// ERROR "unexported|undefined"
+}
diff --git a/test/runtime/README b/test/runtime/README
new file mode 100644
index 0000000..249031a
--- /dev/null
+++ b/test/runtime/README
@@ -0,0 +1,7 @@
+// Copyright 2019 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.
+
+The runtime directory contains tests that specifically need
+to be compiled as-if in the runtime package.  For error-check
+tests, these require the additional flags -+ and -p=runtime.
diff --git a/test/runtime/inlinegcpc.go b/test/runtime/inlinegcpc.go
new file mode 100644
index 0000000..c423993
--- /dev/null
+++ b/test/runtime/inlinegcpc.go
@@ -0,0 +1,29 @@
+// errorcheck -0 -+ -p=runtime -m
+
+// Copyright 2019 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.
+
+package runtime
+
+// A function that calls runtime.getcallerpc or runtime.getcallersp()
+// cannot be inlined, no matter how small it is.
+
+func getcallerpc() uintptr
+func getcallersp() uintptr
+
+func pc() uintptr {
+	return getcallerpc() + 1
+}
+
+func cpc() uintptr { // ERROR "can inline cpc"
+	return pc() + 2
+}
+
+func sp() uintptr {
+	return getcallersp() + 3
+}
+
+func csp() uintptr { // ERROR "can inline csp"
+	return sp() + 4
+}