diff --git a/src/cmd/compile/internal/noder/reader.go b/src/cmd/compile/internal/noder/reader.go
index 7c35172f12..d050275f9e 100644
--- a/src/cmd/compile/internal/noder/reader.go
+++ b/src/cmd/compile/internal/noder/reader.go
@@ -599,6 +599,7 @@ func (pr *pkgReader) objIdx(idx pkgbits.Index, implicits, explicits []*types.Typ
 
 	do := func(op ir.Op, hasTParams bool) *ir.Name {
 		pos := r.pos()
+		setBasePos(pos)
 		if hasTParams {
 			r.typeParamNames()
 		}
@@ -1812,6 +1813,7 @@ func (r *reader) exprType(nilOK bool) ir.Node {
 	}
 
 	pos := r.pos()
+	setBasePos(pos)
 
 	lsymPtr := func(lsym *obj.LSym) ir.Node {
 		return typecheck.Expr(typecheck.NodAddr(ir.NewLinksymExpr(pos, lsym, types.Types[types.TUINT8])))
@@ -2530,3 +2532,8 @@ func addTailCall(pos src.XPos, fn *ir.Func, recv ir.Node, method *types.Field) {
 	ret.Results = []ir.Node{call}
 	fn.Body.Append(ret)
 }
+
+func setBasePos(pos src.XPos) {
+	// Set the position for any error messages we might print (e.g. too large types).
+	base.Pos = pos
+}
diff --git a/test/run.go b/test/run.go
index a4ec19c73c..8763660ea8 100644
--- a/test/run.go
+++ b/test/run.go
@@ -1997,12 +1997,9 @@ var unifiedFailures = setOf(
 	"escape4.go",  // unified IR can inline f5 and f6; test doesn't expect this
 	"inline.go",   // unified IR reports function literal diagnostics on different lines than -d=inlfuncswithclosures
 
-	"fixedbugs/issue7921.go",   // prints "… escapes to heap", but test expects "string(…) escapes to heap"
-	"typeparam/issue47631.go",  // unified IR can handle local type declarations
-	"fixedbugs/issue42058a.go", // unified IR doesn't report channel element too large
-	"fixedbugs/issue42058b.go", // unified IR doesn't report channel element too large
-	"fixedbugs/issue49767.go",  // unified IR doesn't report channel element too large
-	"fixedbugs/issue49814.go",  // unified IR doesn't report array type too large
+	"fixedbugs/issue7921.go",  // prints "… escapes to heap", but test expects "string(…) escapes to heap"
+	"typeparam/issue47631.go", // unified IR can handle local type declarations
+	"fixedbugs/issue49767.go", // unified IR reports channel element too large on different line than irgen
 )
 
 func setOf(keys ...string) map[string]bool {