1 files changed, 50 insertions, 0 deletions
diff --git a/llgo/test/execution/slices/cap.go b/llgo/test/execution/slices/cap.go
new file mode 100644
index 00000000000..33a34ff1a38
--- /dev/null
+++ b/llgo/test/execution/slices/cap.go
@@ -0,0 +1,50 @@
+// RUN: llgo -o %t %s
+// RUN: %t 2>&1 | FileCheck %s
+
+// CHECK: 0 0
+// CHECK-NEXT: 0 0
+// CHECK-NEXT: 0 0
+// CHECK-NEXT: 1 1
+// CHECK-NEXT: 1 1
+// CHECK-NEXT: 1 2
+// CHECK-NEXT: 2 9
+// CHECK-NEXT: 3 9
+// CHECK-NEXT: 999
+// CHECK-NEXT: 999
+// CHECK-NEXT: 1 2
+
+package main
+
+func test(l, c int) {
+	var s []int
+	if l != -1 {
+		if c == -1 {
+			s = make([]int, l)
+		} else {
+			s = make([]int, l, c)
+		}
+	}
+	println(len(s), cap(s))
+}
+
+func main() {
+	test(-1, -1)
+	test(0, -1)
+	test(0, 0)
+	test(1, -1)
+	test(1, 1)
+	test(1, 2)
+
+	// make sure capacity is transferred to slice
+	s := make([]int, 5, 10)
+	s1 := s[1:3]
+	println(len(s1), cap(s1))
+
+	s2 := append(s1, 999)
+	println(len(s2), cap(s2))
+	println(s2[2])
+	println(s[3])
+
+	s3 := s1[0:1:2]
+	println(len(s3), cap(s3))
+}