From e570173641d146709777fe5c3dbd1eed432b5ae2 Mon Sep 17 00:00:00 2001
From: Matt Bauman <mbauman@gmail.com>
Date: Thu, 19 Apr 2018 14:57:33 -0400
Subject: [PATCH] Use nothing instead of () to signify no available frame

---
 base/broadcast.jl  | 2 +-
 base/deprecated.jl | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/base/broadcast.jl b/base/broadcast.jl
index d6d7e72149ad3..55dd8313172b0 100644
--- a/base/broadcast.jl
+++ b/base/broadcast.jl
@@ -853,7 +853,7 @@ function __dot__(x::Expr)
         if x.head == :&& || x.head == :||
             Base.depwarn("""
                 using $(x.head) expressions in @. is deprecated; in the future it will
-                become elementwise. Break the expression into smaller parts instead.""", ())
+                become elementwise. Break the expression into smaller parts instead.""", nothing)
         end
         head = string(x.head)
         if last(head) == '=' && first(head) != '.'
diff --git a/base/deprecated.jl b/base/deprecated.jl
index 6389ed42dcf9b..7880d600f1597 100644
--- a/base/deprecated.jl
+++ b/base/deprecated.jl
@@ -82,11 +82,12 @@ function depwarn(msg, funcsym)
         _id=(frame,funcsym),
         _group=:depwarn,
         caller=caller,
-        maxlog=funcsym === () ? nothing : 1
+        maxlog=funcsym
     )
     nothing
 end
 
+firstcaller(bt::Vector, ::Nothing) = Ptr{Cvoid}(0), StackTraces.UNKNOWN
 firstcaller(bt::Vector, funcsym::Symbol) = firstcaller(bt, (funcsym,))
 function firstcaller(bt::Vector, funcsyms)
     # Identify the calling line