better syntax error for &&&, fixes #7479

JuliaLang · Jul 20, 2017 · cf354f7 · cf354f7
1 parent 3e8b32d
commit cf354f7
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diff --git a/src/julia-syntax.scm b/src/julia-syntax.scm
@@ -3599,7 +3599,8 @@ f(x) = yt(x)
  (emit temp))))
 
  ((&)
- (assert (and value (not tail)))
+ (if (or (not value) tail)
+ (error "misplaced \"&\" expression"))
  `(& ,(compile (cadr e) break-labels value tail)))
 
  ((newvar)

diff --git a/test/parse.jl b/test/parse.jl
@@ -1251,3 +1251,6 @@ end === (3, String)
 # issue #22868
 @test_throws ParseError parse("x@time 2")
 @test_throws ParseError parse("@ time")
+
+# issue #7479
+@test expand(Main, parse("(true &&& false)")) == Expr(:error, "misplaced \"&\" expression")