Merge pull request #22167 from JuliaLang/jb/fix22032

fix #22032, `for f() in 1:10 ...`

src/julia-syntax.scm

@@ -1407,8 +1407,16 @@
       ,@(let loop ((lhs lhss)
                    (i   1))
           (if (null? lhs) '((null))
-              (cons `(= ,(car lhs)
-                        (call (core getfield) ,t ,i))
+              (cons (if (eventually-call (car lhs))
+                        ;; if this is a function assignment, avoid putting our ssavalue
+                        ;; inside the function and instead create a capture-able variable.
+                        ;; issue #22032
+                        (let ((temp (gensy)))
+                          `(block
+                            (= ,temp (call (core getfield) ,t ,i))
+                            (= ,(car lhs) ,temp)))
+                        `(= ,(car lhs)
+                            (call (core getfield) ,t ,i)))
                     (loop (cdr lhs)
                           (+ i 1)))))
       ,t)))

test/core.jl

@@ -539,6 +539,21 @@ end
 @test a[2](10) == 12
 @test a[3](10) == 13
 
+# issue #22032
+let a = [], fs = []
+    for f() in 1:3
+        push!(a, f())
+        push!(fs, f)
+    end
+    @test a == [1,2,3]
+    @test [f() for f in fs] == [1,2,3]
+end
+let t = (22,33)
+    (g(), x) = t
+    @test g() == 22
+    @test x == 33
+end
+
 # issue #21900
 f21900_cnt = 0
 function f21900()