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Revert "runtime: use bytes.IndexByte in findnull"

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This reverts commit 7365fac2db.

Reason for revert: breaks the build on some architectures, reading unmapped pages?

Change-Id: I3a8c02dc0b649269faacea79ecd8213defa97c54
Reviewed-on: https://go-review.googlesource.com/97995
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Brad Fitzpatrick 2018-03-01 22:22:44 +00:00
parent f1fc9da316
commit 1fadbc1a76
4 changed files with 7 additions and 20 deletions
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9
src/runtime/string.go
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@ -407,9 +407,12 @@ func findnull(s *byte) int {
if s == nil {
return 0
}
ss := stringStruct{unsafe.Pointer(s), maxAlloc/2 - 1}
t := *(*string)(unsafe.Pointer(&ss))
return stringsIndexByte(t, 0)
p := (*[maxAlloc/2 - 1]byte)(unsafe.Pointer(s))
l := 0
for p[l] != 0 {
l++
}
return l
}
func findnullw(s *uint16) int {