diff --git a/src/cmd/compile/internal/ssa/rewrite.go b/src/cmd/compile/internal/ssa/rewrite.go
index 54ea2d3f4f..afd56018d3 100644
--- a/src/cmd/compile/internal/ssa/rewrite.go
+++ b/src/cmd/compile/internal/ssa/rewrite.go
@@ -1370,6 +1370,9 @@ func zeroUpper56Bits(x *Value, depth int) bool {
 }
 
 func isInlinableMemclr(c *Config, sz int64) bool {
+	if sz < 0 {
+		return false
+	}
 	// TODO: expand this check to allow other architectures
 	// see CL 454255 and issue 56997
 	switch c.arch {
diff --git a/test/fixedbugs/issue59174.go b/test/fixedbugs/issue59174.go
new file mode 100644
index 0000000000..33a19a4653
--- /dev/null
+++ b/test/fixedbugs/issue59174.go
@@ -0,0 +1,12 @@
+// compile
+
+// Copyright 2023 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 p
+
+func p() {
+	s := make([]int, copy([]byte{' '}, "")-1)
+	_ = append([]int{}, make([]int, len(s))...)
+}