1 files changed, 25 insertions, 0 deletions
diff --git a/test/fixedbugs/issue20780.go b/test/fixedbugs/issue20780.go
new file mode 100644
index 0000000..f73e6d1
--- /dev/null
+++ b/test/fixedbugs/issue20780.go
@@ -0,0 +1,25 @@
+// errorcheck
+
+// 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.
+
+// We have a limit of 1GB for stack frames.
+// Make sure we include the callee args section.
+
+package main
+
+type Big = [400e6]byte
+
+func f() { // GC_ERROR "stack frame too large"
+	// Note: This test relies on the fact that we currently always
+	// spill function-results to the stack, even if they're so
+	// large that we would normally heap allocate them. If we ever
+	// improve the backend to spill temporaries to the heap, this
+	// test will probably need updating to find some new way to
+	// construct an overly large stack frame.
+	g(h(), h())
+}
+
+func g(Big, Big)
+func h() Big