Fix dump in the presence of nothing (#27991)

Currently anything that's `dump`ed that contains `nothing` will error, since there's no logic in place for handling `nothing` in `dump` after PR #27829.
JuliaLang · Jul 9, 2018 · 8d48f7b · 8d48f7b
1 parent 6638469
commit 8d48f7b
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/base/show.jl b/base/show.jl
@@ -1611,8 +1611,9 @@ function dump(io::IOContext, @nospecialize(x), n::Int, indent)
                 end
             end
         end
-    else
-        !isa(x, Function) && print(io, " ", x)
+    elseif !isa(x, Function)
+        print(io, " ")
+        show(io, x)
     end
     nothing
 end

diff --git a/test/show.jl b/test/show.jl
@@ -820,6 +820,9 @@ end
 let repr = sprint(dump, Test)
     @test repr == "Module Test\n"
 end
+let repr = sprint(dump, nothing)
+    @test repr == "Nothing nothing\n"
+end
 let a = Vector{Any}(undef, 10000)
     a[2] = "elemA"
     a[4] = "elemB"