diff --git a/src/cmd/compile/internal/gc/sinit.go b/src/cmd/compile/internal/gc/sinit.go
index d755ea35cc..6666e8bb5e 100644
--- a/src/cmd/compile/internal/gc/sinit.go
+++ b/src/cmd/compile/internal/gc/sinit.go
@@ -1278,6 +1278,9 @@ func (s *InitSchedule) initplan(n *Node) {
 			if a.Op != OSTRUCTKEY {
 				Fatalf("initplan structlit")
 			}
+			if a.Sym.IsBlank() {
+				continue
+			}
 			s.addvalue(p, a.Xoffset, a.Left)
 		}
 
diff --git a/test/fixedbugs/issue31546.go b/test/fixedbugs/issue31546.go
new file mode 100644
index 0000000000..a459d4d124
--- /dev/null
+++ b/test/fixedbugs/issue31546.go
@@ -0,0 +1,20 @@
+// run
+
+// 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 main
+
+import (
+	"reflect"
+)
+
+var x = struct{ a, _, c int }{1, 2, 3}
+
+func main() {
+	if i := reflect.ValueOf(x).Field(1).Int(); i != 0 {
+		println("got", i, "want", 0)
+		panic("fail")
+	}
+}