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-rw-r--r--test/fixedbugs/bug260.go65
1 files changed, 65 insertions, 0 deletions
diff --git a/test/fixedbugs/bug260.go b/test/fixedbugs/bug260.go
new file mode 100644
index 0000000..6211c48
--- /dev/null
+++ b/test/fixedbugs/bug260.go
@@ -0,0 +1,65 @@
+// run
+
+// Copyright 2010 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
+
+// Test that structures pack densely, according to the alignment of the largest field.
+
+package main
+
+import (
+ "fmt"
+ "os"
+ "strconv"
+)
+
+type T1 struct {
+ x uint8
+}
+type T2 struct {
+ x uint16
+}
+type T4 struct {
+ x uint32
+}
+
+func main() {
+ report := len(os.Args) > 1
+ status := 0
+ var b1 [10]T1
+ a0, _ := strconv.ParseUint(fmt.Sprintf("%p", &b1[0])[2:], 16, 64)
+ a1, _ := strconv.ParseUint(fmt.Sprintf("%p", &b1[1])[2:], 16, 64)
+ if a1 != a0+1 {
+ fmt.Println("FAIL")
+ if report {
+ fmt.Println("alignment should be 1, is", a1-a0)
+ }
+ status = 1
+ }
+ var b2 [10]T2
+ a0, _ = strconv.ParseUint(fmt.Sprintf("%p", &b2[0])[2:], 16, 64)
+ a1, _ = strconv.ParseUint(fmt.Sprintf("%p", &b2[1])[2:], 16, 64)
+ if a1 != a0+2 {
+ if status == 0 {
+ fmt.Println("FAIL")
+ status = 1
+ }
+ if report {
+ fmt.Println("alignment should be 2, is", a1-a0)
+ }
+ }
+ var b4 [10]T4
+ a0, _ = strconv.ParseUint(fmt.Sprintf("%p", &b4[0])[2:], 16, 64)
+ a1, _ = strconv.ParseUint(fmt.Sprintf("%p", &b4[1])[2:], 16, 64)
+ if a1 != a0+4 {
+ if status == 0 {
+ fmt.Println("FAIL")
+ status = 1
+ }
+ if report {
+ fmt.Println("alignment should be 4, is", a1-a0)
+ }
+ }
+ os.Exit(status)
+}