diff --git a/examples/components/asm.go b/examples/components/asm.go
index e968a14..c5d5597 100644
--- a/examples/components/asm.go
+++ b/examples/components/asm.go
@@ -9,6 +9,26 @@ import (
 func main() {
 	Package("github.com/mmcloughlin/avo/examples/components")
 
+	TEXT("StringLen", "func(s string) int")
+	strlen := Load(Param("s").Len(), GP64v())
+	Store(strlen, ReturnIndex(0))
+	RET()
+
+	TEXT("SliceLen", "func(s []int) int")
+	slicelen := Load(Param("s").Len(), GP64v())
+	Store(slicelen, ReturnIndex(0))
+	RET()
+
+	TEXT("SliceCap", "func(s []int) int")
+	slicecap := Load(Param("s").Cap(), GP64v())
+	Store(slicecap, ReturnIndex(0))
+	RET()
+
+	TEXT("ArrayThree", "func(a [7]uint64) uint64")
+	a3 := Load(Param("a").Index(3), GP64v())
+	Store(a3, ReturnIndex(0))
+	RET()
+
 	TEXT("FieldByte", "func(s Struct) byte")
 	b := Load(Param("s").Field("Byte"), GP8v())
 	Store(b, ReturnIndex(0))
diff --git a/examples/components/components.s b/examples/components/components.s
index 65e5313..80e4d6c 100644
--- a/examples/components/components.s
+++ b/examples/components/components.s
@@ -2,6 +2,30 @@
 
 #include "textflag.h"
 
+// func StringLen(s string) int
+TEXT ·StringLen(SB),0,$0-24
+	MOVQ	s_len+8(FP), AX
+	MOVQ	AX, ret+16(FP)
+	RET
+
+// func SliceLen(s []int) int
+TEXT ·SliceLen(SB),0,$0-32
+	MOVQ	s_len+8(FP), AX
+	MOVQ	AX, ret+24(FP)
+	RET
+
+// func SliceCap(s []int) int
+TEXT ·SliceCap(SB),0,$0-32
+	MOVQ	s_cap+16(FP), AX
+	MOVQ	AX, ret+24(FP)
+	RET
+
+// func ArrayThree(a [7]uint64) uint64
+TEXT ·ArrayThree(SB),0,$0-64
+	MOVQ	a_3+24(FP), AX
+	MOVQ	AX, ret+56(FP)
+	RET
+
 // func FieldByte(s Struct) byte
 TEXT ·FieldByte(SB),0,$0-184
 	MOVB	s_Byte(FP), AL
diff --git a/examples/components/components_test.go b/examples/components/components_test.go
index bffaead..4287ef1 100644
--- a/examples/components/components_test.go
+++ b/examples/components/components_test.go
@@ -11,6 +11,10 @@ func TestFunctionsEqual(t *testing.T) {
 	cases := []struct {
 		f, g interface{}
 	}{
+		{StringLen, func(s string) int { return len(s) }},
+		{SliceLen, func(s []int) int { return len(s) }},
+		{SliceCap, func(s []int) int { return cap(s) }},
+		{ArrayThree, func(a [7]uint64) uint64 { return a[3] }},
 		{FieldByte, func(s Struct) byte { return s.Byte }},
 		{FieldInt8, func(s Struct) int8 { return s.Int8 }},
 		{FieldUint16, func(s Struct) uint16 { return s.Uint16 }},
diff --git a/examples/components/stub.go b/examples/components/stub.go
index 9991c74..6036ddb 100644
--- a/examples/components/stub.go
+++ b/examples/components/stub.go
@@ -2,6 +2,14 @@
 
 package components
 
+func StringLen(s string) int
+
+func SliceLen(s []int) int
+
+func SliceCap(s []int) int
+
+func ArrayThree(a [7]uint64) uint64
+
 func FieldByte(s Struct) byte
 
 func FieldInt8(s Struct) int8