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Generate same output on all architectures.

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Passing an argument to bug260 will indicate which alignments
are wrong.

R=r
CC=golang-dev
https://golang.org/cl/231042
This commit is contained in:
Ian Lance Taylor 2010-03-05 10:43:33 -08:00
parent a145829873
commit 4b22e1bdb6
2 changed files with 22 additions and 9 deletions
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26
test/bugs/bug260.go
View File

@ -1,4 +1,4 @@
// $G $D/$F.go && $L $F.$A && ./$A.out
// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG: bug260 failed
// Test that structures pack densely, according to the alignment of the largest field.
@ -15,27 +15,41 @@ 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.Btoui64(fmt.Sprintf("%p", &b1[0])[2:], 16)
a1, _ := strconv.Btoui64(fmt.Sprintf("%p", &b1[1])[2:], 16)
if a1 != a0 + 1 {
fmt.Println("FAIL: alignment should be 1, is", a1-a0)
fmt.Println("FAIL")
if report {
fmt.Println("alignment should be 1, is", a1-a0)
}
status = 1
}
var b2 [10]T2
a0, _ = strconv.Btoui64(fmt.Sprintf("%p", &b2[0])[2:], 16)
a1, _ = strconv.Btoui64(fmt.Sprintf("%p", &b2[1])[2:], 16)
if a1 != a0 + 2 {
fmt.Println("FAIL: alignment should be 2, is", a1-a0)
status = 1
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.Btoui64(fmt.Sprintf("%p", &b4[0])[2:], 16)
a1, _ = strconv.Btoui64(fmt.Sprintf("%p", &b4[1])[2:], 16)
if a1 != a0 + 4 {
fmt.Println("FAIL: alignment should be 4, is", a1-a0)
status = 1
if status == 0 {
fmt.Println("FAIL")
status = 1
}
if report {
fmt.Println("alignment should be 4, is", a1-a0)
}
}
os.Exit(status)
}

5
test/golden.out
View File

@ -152,6 +152,5 @@ panic PC=xxx
== bugs/
=========== bugs/bug260.go
FAIL: alignment should be 1, is 8
FAIL: alignment should be 2, is 8
FAIL: alignment should be 4, is 8
FAIL
BUG: bug260 failed