diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/compile/internal/ssagen/ssa.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssagen/ssa.go b/src/cmd/compile/internal/ssagen/ssa.go index 82d232f940..9746fbd316 100644 --- a/src/cmd/compile/internal/ssagen/ssa.go +++ b/src/cmd/compile/internal/ssagen/ssa.go @@ -3206,6 +3206,11 @@ func (s *state) exprCheckPtr(n ir.Node, checkPtrOK bool) *ssa.Value { n := n.(*ir.BinaryExpr) ptr := s.expr(n.X) len := s.expr(n.Y) + + // Force len to uintptr to prevent misuse of garbage bits in the + // upper part of the register (#48536). + len = s.conv(n, len, len.Type, types.Types[types.TUINTPTR]) + return s.newValue2(ssa.OpAddPtr, n.Type(), ptr, len) default: |