diff options
Diffstat (limited to 'src/cmd')
| -rw-r--r-- | src/cmd/compile/internal/gc/walk.go | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/cmd/compile/internal/gc/walk.go b/src/cmd/compile/internal/gc/walk.go index a7b6e7fcb3..2133a160b2 100644 --- a/src/cmd/compile/internal/gc/walk.go +++ b/src/cmd/compile/internal/gc/walk.go @@ -267,7 +267,7 @@ func walkstmt(n *Node) *Node { if n.List.Len() == 0 { break } - if (Curfn.Type.FuncType().Outnamed && n.List.Len() > 1) || paramoutheap(Curfn) { + if (Curfn.Type.FuncType().Outnamed && n.List.Len() > 1) || paramoutheap(Curfn) || Curfn.Func.HasDefer() { // assign to the function out parameters, // so that reorder3 can fix up conflicts var rl []*Node @@ -2233,7 +2233,15 @@ func aliased(r *Node, all []*Node) bool { memwrite = true continue - case PAUTO, PPARAM, PPARAMOUT: + case PPARAMOUT: + // Assignments to a result parameter in a function with defers + // becomes visible early if evaluation of any later expression + // panics (#43835). + if Curfn.Func.HasDefer() { + return true + } + fallthrough + case PAUTO, PPARAM: if l.Name.Addrtaken() { memwrite = true continue |