Merge pull request #18895 from JuliaLang/jb/nofilename

tiny fix to avoid `push_loc` nodes in IR for no filename

src/julia-syntax.scm

@@ -3061,7 +3061,7 @@ f(x) = yt(x)
 ;; only possible returned values.
 (define (compile-body e vi lam)
   (let ((code '())
-        (filename #f)
+        (filename 'none)
         (first-line #t)
         (rett #f)
         (arg-map #f)          ;; map arguments to new names if they are assigned

test/parse.jl

@@ -823,3 +823,11 @@ end
 @test parse("typealias a (Int)") == Expr(:typealias, :a, :Int)
 @test parse("typealias b (Int,)") == Expr(:typealias, :b, Expr(:tuple, :Int))
 @test parse("typealias Foo{T} Bar{T}") == Expr(:typealias, Expr(:curly, :Foo, :T), Expr(:curly, :Bar, :T))
+
+# don't insert push_loc for filename `none` at the top level
+let ex = expand(parse("""
+begin
+    x = 1
+end"""))
+    @test !any(x->(x == Expr(:meta, :push_loc, :none)), ex.args)
+end