diff options
Diffstat (limited to 'src/cmd/link/internal/ld/deadcode.go')
| -rw-r--r-- | src/cmd/link/internal/ld/deadcode.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/cmd/link/internal/ld/deadcode.go b/src/cmd/link/internal/ld/deadcode.go index 245076a83a..ebde41499e 100644 --- a/src/cmd/link/internal/ld/deadcode.go +++ b/src/cmd/link/internal/ld/deadcode.go @@ -24,6 +24,7 @@ type deadcodePass struct { ifaceMethod map[methodsig]bool // methods declared in reached interfaces markableMethods []methodref // methods of reached types reflectSeen bool // whether we have seen a reflect method call + dynlink bool methodsigstmp []methodsig // scratch buffer for decoding method signatures } @@ -34,6 +35,7 @@ func (d *deadcodePass) init() { if objabi.Fieldtrack_enabled != 0 { d.ldr.Reachparent = make([]loader.Sym, d.ldr.NSym()) } + d.dynlink = d.ctxt.DynlinkingGo() if d.ctxt.BuildMode == BuildModeShared { // Mark all symbols defined in this library as reachable when @@ -91,6 +93,10 @@ func (d *deadcodePass) init() { names = append(names, exp) } + if d.ctxt.Debugvlog > 1 { + d.ctxt.Logf("deadcode start names: %v\n", names) + } + for _, name := range names { // Mark symbol as a data/ABI0 symbol. d.mark(d.ldr.Lookup(name, 0), 0) @@ -111,6 +117,11 @@ func (d *deadcodePass) flood() { var usedInIface bool if isgotype { + if d.dynlink { + // When dynaamic linking, a type may be passed across DSO + // boundary and get converted to interface at the other side. + d.ldr.SetAttrUsedInIface(symIdx, true) + } usedInIface = d.ldr.AttrUsedInIface(symIdx) } |