diff options
Diffstat (limited to 'src/cmd/compile/internal/gc/ssa.go')
| -rw-r--r-- | src/cmd/compile/internal/gc/ssa.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go index 5b74754b53..8975ad3559 100644 --- a/src/cmd/compile/internal/gc/ssa.go +++ b/src/cmd/compile/internal/gc/ssa.go @@ -4709,6 +4709,17 @@ func (s *state) call(n *Node, k callKind, returnResultAddr bool) *ssa.Value { } } + // Split the entry block if there are open defers, because later calls to + // openDeferSave may cause a mismatch between the mem for an OpDereference + // and the call site which uses it. See #49282. + if s.curBlock.ID == s.f.Entry.ID && s.hasOpenDefers { + b := s.endBlock() + b.Kind = ssa.BlockPlain + curb := s.f.NewBlock(ssa.BlockPlain) + b.AddEdgeTo(curb) + s.startBlock(curb) + } + // Write args. t := n.Left.Type args := n.Rlist.Slice() |