diff options
Diffstat (limited to 'src/cmd/compile/internal/gc/main.go')
| -rw-r--r-- | src/cmd/compile/internal/gc/main.go | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/gc/main.go b/src/cmd/compile/internal/gc/main.go index c94f19fd47..68017516df 100644 --- a/src/cmd/compile/internal/gc/main.go +++ b/src/cmd/compile/internal/gc/main.go @@ -32,6 +32,7 @@ import ( "log" "os" "runtime" + "sort" ) func hidePanic() { @@ -202,6 +203,20 @@ func Main(archInit func(*ssagen.ArchInfo)) { typecheck.Export(initTask) } + // Stability quirk: sort top-level declarations, so we're not + // sensitive to the order that functions are added. In particular, + // the order that noder+typecheck add function closures is very + // subtle, and not important to reproduce. + // + // Note: This needs to happen after pkginit.Task, otherwise it risks + // changing the order in which top-level variables are initialized. + if base.Debug.UnifiedQuirks != 0 { + s := typecheck.Target.Decls + sort.SliceStable(s, func(i, j int) bool { + return s[i].Pos().Before(s[j].Pos()) + }) + } + // Eliminate some obviously dead code. // Must happen after typechecking. for _, n := range typecheck.Target.Decls { |