diff options
Diffstat (limited to 'src/runtime/mbitmap.go')
| -rw-r--r-- | src/runtime/mbitmap.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/runtime/mbitmap.go b/src/runtime/mbitmap.go index 3363cd0682..7171d3adbd 100644 --- a/src/runtime/mbitmap.go +++ b/src/runtime/mbitmap.go @@ -264,7 +264,11 @@ func (s *mspan) nextFreeIndex() uintptr { return result } +// isFree returns whether the index'th object in s is unallocated. func (s *mspan) isFree(index uintptr) bool { + if index < s.freeindex { + return false + } whichByte := index / 8 whichBit := index % 8 byteVal := *addb(s.allocBits, whichByte) |