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runtime: fix comment typo 

This was a typo mistake according to if cond and runtime/mheap.go:323

Change-Id: Id046d4afbfe0ea43cb29e1a9f400e1f130de221d
Reviewed-on: https://go-review.googlesource.com/102575
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Zhou Peng 2018-03-26 15:06:59 +00:00 committed by Austin Clements
parent 683e2fd578
commit 3412baaa02
1 changed files with 1 additions and 1 deletions
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2
src/runtime/mbitmap.go
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@ -257,7 +257,7 @@ func (s *mspan) objIndex(p uintptr) uintptr {
return 0
}
if s.baseMask != 0 {
// s.baseMask is 0, elemsize is a power of two, so shift by s.divShift
// s.baseMask is non-0, elemsize is a power of two, so shift by s.divShift
return byteOffset >> s.divShift
}
return uintptr(((uint64(byteOffset) >> s.divShift) * uint64(s.divMul)) >> s.divShift2)