diff --git a/src/cmd/compile/internal/gc/sinit.go b/src/cmd/compile/internal/gc/sinit.go
index 47aee51c17b..0ff94abe2e8 100644
--- a/src/cmd/compile/internal/gc/sinit.go
+++ b/src/cmd/compile/internal/gc/sinit.go
@@ -725,6 +725,9 @@ func fixedlit(ctxt initContext, kind initKind, n *Node, var_ *Node, init *Nodes)
 			if r.Op != OSTRUCTKEY {
 				Fatalf("fixedlit: rhs not OSTRUCTKEY: %v", r)
 			}
+			if isblanksym(r.Sym) {
+				return nblank, r.Left
+			}
 			return nodSym(ODOT, var_, r.Sym), r.Left
 		}
 	default:
@@ -1346,8 +1349,12 @@ func isvaluelit(n *Node) bool {
 }
 
 func genAsStatic(as *Node) {
+	if as.Left.Type == nil {
+		Fatalf("genAsStatic as.Left not typechecked")
+	}
+
 	var nam Node
-	if !stataddr(&nam, as.Left) || nam.Class != PEXTERN {
+	if !stataddr(&nam, as.Left) || (nam.Class != PEXTERN && as.Left != nblank) {
 		Fatalf("genAsStatic: lhs %v", as.Left)
 	}
 
diff --git a/src/cmd/compile/internal/gc/typecheck.go b/src/cmd/compile/internal/gc/typecheck.go
index b272d27612f..db4ea0a8954 100644
--- a/src/cmd/compile/internal/gc/typecheck.go
+++ b/src/cmd/compile/internal/gc/typecheck.go
@@ -3100,7 +3100,7 @@ func typecheckcomplit(n *Node) *Node {
 					// the field to the right of the dot,
 					// so s will be non-nil, but an OXDOT
 					// is never a valid struct literal key.
-					if key.Sym == nil || key.Op == OXDOT {
+					if key.Sym == nil || key.Op == OXDOT || isblanksym(key.Sym) {
 						yyerror("invalid field name %v in struct initializer", key)
 						l.Left = typecheck(l.Left, Erv)
 						continue
diff --git a/src/cmd/internal/obj/data.go b/src/cmd/internal/obj/data.go
index 114841dedb4..5f583071e62 100644
--- a/src/cmd/internal/obj/data.go
+++ b/src/cmd/internal/obj/data.go
@@ -70,7 +70,7 @@ func (s *LSym) GrowCap(c int64) {
 // prepwrite prepares to write data of size siz into s at offset off.
 func (s *LSym) prepwrite(ctxt *Link, off int64, siz int) {
 	if off < 0 || siz < 0 || off >= 1<<30 {
-		log.Fatalf("prepwrite: bad off=%d siz=%d s=%v", off, siz, s)
+		ctxt.Diag("prepwrite: bad off=%d siz=%d s=%v", off, siz, s)
 	}
 	if s.Type == SBSS || s.Type == STLSBSS {
 		ctxt.Diag("cannot supply data for BSS var")
diff --git a/test/fixedbugs/issue19482.go b/test/fixedbugs/issue19482.go
new file mode 100644
index 00000000000..97497a434c3
--- /dev/null
+++ b/test/fixedbugs/issue19482.go
@@ -0,0 +1,34 @@
+// errorcheck
+
+// Copyright 2017 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.
+
+// Compiler rejected initialization of structs to composite literals
+// in a non-static setting (e.g. in a function)
+// when the struct contained a field named _.
+
+package p
+
+type T struct {
+	_ string
+}
+
+func ok() {
+	var x = T{"check"}
+	_ = x
+	_ = T{"et"}
+}
+
+var (
+	y = T{"stare"}
+	w = T{_: "look"} // ERROR "invalid field name _ in struct initializer"
+	_ = T{"page"}
+	_ = T{_: "out"} // ERROR "invalid field name _ in struct initializer"
+)
+
+func bad() {
+	var z = T{_: "verse"} // ERROR "invalid field name _ in struct initializer"
+	_ = z
+	_ = T{_: "itinerary"} // ERROR "invalid field name _ in struct initializer"
+}