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-rw-r--r--test/indirect1.go72
1 files changed, 72 insertions, 0 deletions
diff --git a/test/indirect1.go b/test/indirect1.go
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+// errorcheck
+
+// Copyright 2009 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.
+
+// Verify that illegal uses of indirection are caught by the compiler.
+// Does not compile.
+
+package main
+
+var m0 map[string]int
+var m1 *map[string]int
+var m2 *map[string]int = &m0
+var m3 map[string]int = map[string]int{"a": 1}
+var m4 *map[string]int = &m3
+
+var s0 string
+var s1 *string
+var s2 *string = &s0
+var s3 string = "a"
+var s4 *string = &s3
+
+var a0 [10]int
+var a1 *[10]int
+var a2 *[10]int = &a0
+
+var b0 []int
+var b1 *[]int
+var b2 *[]int = &b0
+var b3 []int = []int{1, 2, 3}
+var b4 *[]int = &b3
+
+func f() {
+ // this is spaced funny so that
+ // the compiler will print a different
+ // line number for each len call when
+ // it decides there are type errors.
+ x :=
+ len(m0)+
+ len(m1)+ // ERROR "illegal|invalid|must be"
+ len(m2)+ // ERROR "illegal|invalid|must be"
+ len(m3)+
+ len(m4)+ // ERROR "illegal|invalid|must be"
+
+ len(s0)+
+ len(s1)+ // ERROR "illegal|invalid|must be"
+ len(s2)+ // ERROR "illegal|invalid|must be"
+ len(s3)+
+ len(s4)+ // ERROR "illegal|invalid|must be"
+
+ len(a0)+
+ len(a1)+
+ len(a2)+
+
+ cap(a0)+
+ cap(a1)+
+ cap(a2)+
+
+ len(b0)+
+ len(b1)+ // ERROR "illegal|invalid|must be"
+ len(b2)+ // ERROR "illegal|invalid|must be"
+ len(b3)+
+ len(b4)+ // ERROR "illegal|invalid|must be"
+
+ cap(b0)+
+ cap(b1)+ // ERROR "illegal|invalid|must be"
+ cap(b2)+ // ERROR "illegal|invalid|must be"
+ cap(b3)+
+ cap(b4) // ERROR "illegal|invalid|must be"
+ _ = x
+}