diff --git a/src/runtime/symtab.go b/src/runtime/symtab.go
index 37c21ee895..03b0d8cb7e 100644
--- a/src/runtime/symtab.go
+++ b/src/runtime/symtab.go
@@ -13,6 +13,8 @@ type Frame struct {
 
 	File string
 	Line int
+
+	Entry uintptr
 }
 
 func CallersFrames(callers []uintptr) *Frames {