fix called-argument analysis for calls with splat (#58070)

Author: JeffBezanson

src/julia-syntax.scm

@@ -3513,6 +3513,11 @@
          (let ((vi (get tab (cadr e) #f)))
            (if vi
                (vinfo:set-called! vi #t))
+           ;; calls f(x...) go through `_apply_iterate`
+           (if (and (length> e 3) (equal? (cadr e) '(core _apply_iterate)))
+               (let ((vi2 (get tab (cadddr e) #f)))
+                 (if vi2
+                     (vinfo:set-called! vi2 #t))))
            ;; calls to functions with keyword args have head of `kwcall` first
            (if (and (length> e 3) (equal? (cadr e) '(core kwcall)))
                (let ((vi2 (get tab (cadddr e) #f)))

test/syntax.jl

@@ -3573,6 +3573,8 @@ end
 # issue #45162
 f45162(f) = f(x=1)
 @test first(methods(f45162)).called != 0
+f45162_2(f) = f([]...)
+@test first(methods(f45162_2)).called != 0
 
 # issue #45024
 @test_parseerror "const x" "expected assignment after \"const\""