diff options
Diffstat (limited to 'src/cmd/compile/internal/walk/expr.go')
| -rw-r--r-- | src/cmd/compile/internal/walk/expr.go | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/walk/expr.go b/src/cmd/compile/internal/walk/expr.go index a3caa4db36..914011d135 100644 --- a/src/cmd/compile/internal/walk/expr.go +++ b/src/cmd/compile/internal/walk/expr.go @@ -731,10 +731,15 @@ func walkDotType(n *ir.TypeAssertExpr, init *ir.Nodes) ir.Node { lsym := types.LocalPkg.Lookup(fmt.Sprintf(".typeAssert.%d", typeAssertGen)).LinksymABI(obj.ABI0) typeAssertGen++ off := 0 + off = objw.SymPtr(lsym, off, typecheck.LookupRuntimeVar("emptyTypeAssertCache"), 0) off = objw.SymPtr(lsym, off, reflectdata.TypeSym(n.Type()).Linksym(), 0) off = objw.Bool(lsym, off, n.Op() == ir.ODOTTYPE2) // CanFail off += types.PtrSize - 1 - objw.Global(lsym, int32(off), obj.LOCAL|obj.NOPTR) + objw.Global(lsym, int32(off), obj.LOCAL) + // Set the type to be just a single pointer, as the cache pointer is the + // only one that GC needs to see. + lsym.Gotype = reflectdata.TypeLinksym(types.Types[types.TUINT8].PtrTo()) + n.Descriptor = lsym } return n |