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-rw-r--r--test/fixedbugs/issue4654.go71
1 files changed, 71 insertions, 0 deletions
diff --git a/test/fixedbugs/issue4654.go b/test/fixedbugs/issue4654.go
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+++ b/test/fixedbugs/issue4654.go
@@ -0,0 +1,71 @@
+// errorcheck
+
+// Copyright 2013 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.
+
+// Issue 4654.
+// Check error for conversion and 'not used' in defer/go.
+
+package p
+
+import "unsafe"
+
+func f() {
+ defer int(0) // ERROR "defer requires function call, not conversion|is not used"
+ go string([]byte("abc")) // ERROR "go requires function call, not conversion|is not used"
+
+ var c complex128
+ var f float64
+ var t struct {X int}
+
+ var x []int
+ defer append(x, 1) // ERROR "defer discards result of append|is not used"
+ defer cap(x) // ERROR "defer discards result of cap|is not used"
+ defer complex(1, 2) // ERROR "defer discards result of complex|is not used"
+ defer complex(f, 1) // ERROR "defer discards result of complex|is not used"
+ defer imag(1i) // ERROR "defer discards result of imag|is not used"
+ defer imag(c) // ERROR "defer discards result of imag|is not used"
+ defer len(x) // ERROR "defer discards result of len|is not used"
+ defer make([]int, 1) // ERROR "defer discards result of make|is not used"
+ defer make(chan bool) // ERROR "defer discards result of make|is not used"
+ defer make(map[string]int) // ERROR "defer discards result of make|is not used"
+ defer new(int) // ERROR "defer discards result of new|is not used"
+ defer real(1i) // ERROR "defer discards result of real|is not used"
+ defer real(c) // ERROR "defer discards result of real|is not used"
+ defer append(x, 1) // ERROR "defer discards result of append|is not used"
+ defer append(x, 1) // ERROR "defer discards result of append|is not used"
+ defer unsafe.Alignof(t.X) // ERROR "defer discards result of unsafe.Alignof|is not used"
+ defer unsafe.Offsetof(t.X) // ERROR "defer discards result of unsafe.Offsetof|is not used"
+ defer unsafe.Sizeof(t) // ERROR "defer discards result of unsafe.Sizeof|is not used"
+
+ defer copy(x, x) // ok
+ m := make(map[int]int)
+ defer delete(m, 1) // ok
+ defer panic(1) // ok
+ defer print(1) // ok
+ defer println(1) // ok
+ defer recover() // ok
+
+ int(0) // ERROR "int\(0\) evaluated but not used|is not used"
+ string([]byte("abc")) // ERROR "string\(.*\) evaluated but not used|is not used"
+
+ append(x, 1) // ERROR "not used"
+ cap(x) // ERROR "not used"
+ complex(1, 2) // ERROR "not used"
+ complex(f, 1) // ERROR "not used"
+ imag(1i) // ERROR "not used"
+ imag(c) // ERROR "not used"
+ len(x) // ERROR "not used"
+ make([]int, 1) // ERROR "not used"
+ make(chan bool) // ERROR "not used"
+ make(map[string]int) // ERROR "not used"
+ new(int) // ERROR "not used"
+ real(1i) // ERROR "not used"
+ real(c) // ERROR "not used"
+ append(x, 1) // ERROR "not used"
+ append(x, 1) // ERROR "not used"
+ unsafe.Alignof(t.X) // ERROR "not used"
+ unsafe.Offsetof(t.X) // ERROR "not used"
+ unsafe.Sizeof(t) // ERROR "not used"
+}