fix corner cases in `join_vars` (#3787)

fixes #3786
fixes #3788

3 files changed, 665 insertions, 600 deletions

diff --git a/test/compress/drop-unused.js b/test/compress/drop-unused.js
index 949106c2..99ab7b40 100644
--- a/test/compress/drop-unused.js
+++ b/test/compress/drop-unused.js
@@ -2444,21 +2444,3 @@ issue_3746: {
     }
     expect_stdout: "PASS"
 }
-
-join_vars_assign: {
-    options = {
-        join_vars: true,
-        unused: true,
-    }
-    input: {
-        var y, x;
-        x = Object("PAS");
-        y = Object("S");
-        console.log(x + y);
-    }
-    expect: {
-        var x = Object("PAS"), y = Object("S");
-        console.log(x + y);
-    }
-    expect_stdout: "PASS"
-}
diff --git a/test/compress/join_vars.js b/test/compress/join_vars.js
new file mode 100644
index 00000000..bfbebdef
--- /dev/null
+++ b/test/compress/join_vars.js
@@ -0,0 +1,665 @@
+join_vars_assign: {
+    options = {
+        join_vars: true,
+        unused: true,
+    }
+    input: {
+        var y, x;
+        x = Object("PAS");
+        y = Object("S");
+        console.log(x + y);
+    }
+    expect: {
+        var x = Object("PAS"), y = Object("S");
+        console.log(x + y);
+    }
+    expect_stdout: "PASS"
+}
+
+join_object_assignments_1: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var x = {
+                a: 1,
+                c: (console.log("c"), "C"),
+            };
+            x.b = 2;
+            x[3] = function() {
+                console.log(x);
+            },
+            x["a"] = /foo/,
+            x.bar = x;
+            return x;
+        }());
+    }
+    expect: {
+        console.log(function() {
+            var x = {
+                a: 1,
+                c: (console.log("c"), "C"),
+                b: 2,
+                3: function() {
+                    console.log(x);
+                },
+                a: /foo/,
+            };
+            x.bar = x;
+            return x;
+        }());
+    }
+    expect_stdout: true
+}
+
+join_object_assignments_2: {
+    options = {
+        evaluate: true,
+        hoist_props: true,
+        join_vars: true,
+        passes: 3,
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var o = {
+            foo: 1,
+        };
+        o.bar = 2;
+        o.baz = 3;
+        console.log(o.foo, o.bar + o.bar, o.foo * o.bar * o.baz);
+    }
+    expect: {
+        console.log(1, 4, 6);
+    }
+    expect_stdout: "1 4 6"
+}
+
+join_object_assignments_3: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var o = {
+                a: "PASS",
+            }, a = o.a;
+            o.a = "FAIL";
+            return a;
+        }());
+    }
+    expect: {
+        console.log(function() {
+            var o = {
+                a: "PASS",
+            }, a = o.a;
+            o.a = "FAIL";
+            return a;
+        }());
+    }
+    expect_stdout: "PASS"
+}
+
+join_object_assignments_4: {
+    options = {
+        join_vars: true,
+        sequences: true,
+    }
+    input: {
+        var o;
+        console.log(o);
+        o = {};
+        o.a = "foo";
+        console.log(o.b);
+        o.b = "bar";
+        console.log(o.a);
+    }
+    expect: {
+        var o;
+        console.log(o),
+        o = {
+            a: "foo",
+        },
+        console.log(o.b),
+        o.b = "bar",
+        console.log(o.a);
+    }
+    expect_stdout: [
+        "undefined",
+        "undefined",
+        "foo",
+    ]
+}
+
+join_object_assignments_return_1: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var o = {
+                p: 3
+            };
+            return o.q = "foo";
+        }());
+    }
+    expect: {
+        console.log(function() {
+            var o = {
+                p: 3,
+                q: "foo"
+            };
+            return o.q;
+        }());
+    }
+    expect_stdout: "foo"
+}
+
+join_object_assignments_return_2: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var o = {
+                p: 3
+            };
+            return o.q = /foo/,
+            o.r = "bar";
+        }());
+    }
+    expect: {
+        console.log(function() {
+            var o = {
+                p: 3,
+                q: /foo/,
+                r: "bar"
+            };
+            return o.r;
+        }());
+    }
+    expect_stdout: "bar"
+}
+
+join_object_assignments_return_3: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var o = {
+                p: 3
+            };
+            return o.q = "foo",
+            o.p += "",
+            console.log(o.q),
+            o.p;
+        }());
+    }
+    expect: {
+        console.log(function() {
+            var o = {
+                p: 3,
+                q: "foo"
+            };
+            return o.p += "",
+            console.log(o.q),
+            o.p;
+        }());
+    }
+    expect_stdout: [
+        "foo",
+        "3",
+    ]
+}
+
+join_object_assignments_for: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var o = {
+                p: 3
+            };
+            for (o.q = "foo"; console.log(o.q););
+            return o.p;
+        }());
+    }
+    expect: {
+        console.log(function() {
+            for (var o = {
+                p: 3,
+                q: "foo"
+            }; console.log(o.q););
+            return o.p;
+        }());
+    }
+    expect_stdout: [
+        "foo",
+        "3",
+    ]
+}
+
+join_object_assignments_if: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var o = {};
+            if (o.a = "PASS") return o.a;
+        }())
+    }
+    expect: {
+        console.log(function() {
+            var o = { a: "PASS" };
+            if (o.a) return o.a;
+        }());
+    }
+    expect_stdout: "PASS"
+}
+
+join_object_assignments_forin: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        console.log(function() {
+            var o = {};
+            for (var a in o.a = "PASS", o)
+                return o[a];
+        }())
+    }
+    expect: {
+        console.log(function() {
+            var o = { a: "PASS" };
+            for (var a in o)
+                return o[a];
+        }());
+    }
+    expect_stdout: "PASS"
+}
+
+join_object_assignments_negative: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+        properties: true,
+    }
+    input: {
+        var o = {};
+        o[0] = 0;
+        o[-0] = 1;
+        o[-1] = 2;
+        console.log(o[0], o[-0], o[-1]);
+    }
+    expect: {
+        var o = {
+            0: 0,
+            0: 1,
+            "-1": 2
+        };
+        console.log(o[0], o[-0], o[-1]);
+    }
+    expect_stdout: "1 1 2"
+}
+
+join_object_assignments_NaN_1: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        var o = {};
+        o[NaN] = 1;
+        o[0/0] = 2;
+        console.log(o[NaN], o[NaN]);
+    }
+    expect: {
+        var o = {};
+        o[NaN] = 1;
+        o[0/0] = 2;
+        console.log(o[NaN], o[NaN]);
+    }
+    expect_stdout: "2 2"
+}
+
+join_object_assignments_NaN_2: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+        properties: true,
+    }
+    input: {
+        var o = {};
+        o[NaN] = 1;
+        o[0/0] = 2;
+        console.log(o[NaN], o[NaN]);
+    }
+    expect: {
+        var o = {
+            NaN: 1,
+            NaN: 2
+        };
+        console.log(o.NaN, o.NaN);
+    }
+    expect_stdout: "2 2"
+}
+
+join_object_assignments_null_0: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        var o = {};
+        o[null] = 1;
+        console.log(o[null]);
+    }
+    expect: {
+        var o = {};
+        o[null] = 1;
+        console.log(o[null]);
+    }
+    expect_stdout: "1"
+}
+
+join_object_assignments_null_1: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+        properties: true,
+    }
+    input: {
+        var o = {};
+        o[null] = 1;
+        console.log(o[null]);
+    }
+    expect: {
+        var o = {
+            null: 1
+        };
+        console.log(o.null);
+    }
+    expect_stdout: "1"
+}
+
+join_object_assignments_void_0: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+    }
+    input: {
+        var o = {};
+        o[void 0] = 1;
+        console.log(o[void 0]);
+    }
+    expect: {
+        var o = {
+            undefined: 1
+        };
+        console.log(o[void 0]);
+    }
+    expect_stdout: "1"
+}
+
+join_object_assignments_undefined_1: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        var o = {};
+        o[undefined] = 1;
+        console.log(o[undefined]);
+    }
+    expect: {
+        var o = {};
+        o[void 0] = 1;
+        console.log(o[void 0]);
+    }
+    expect_stdout: "1"
+}
+
+join_object_assignments_undefined_2: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+        properties: true,
+    }
+    input: {
+        var o = {};
+        o[undefined] = 1;
+        console.log(o[undefined]);
+    }
+    expect: {
+        var o = {
+            undefined : 1
+        };
+        console.log(o[void 0]);
+    }
+    expect_stdout: "1"
+}
+
+join_object_assignments_Infinity: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+        properties: true,
+    }
+    input: {
+        var o = {};
+        o[Infinity] = 1;
+        o[1/0] = 2;
+        o[-Infinity] = 3;
+        o[-1/0] = 4;
+        console.log(o[Infinity], o[1/0], o[-Infinity], o[-1/0]);
+    }
+    expect: {
+        var o = {
+            Infinity: 1,
+            Infinity: 2,
+            "-Infinity": 3,
+            "-Infinity": 4
+        };
+        console.log(o[1/0], o[1/0], o[-1/0], o[-1/0]);
+    }
+    expect_stdout: "2 2 4 4"
+}
+
+join_object_assignments_regex: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+        properties: true,
+    }
+    input: {
+        var o = {};
+        o[/rx/] = 1;
+        console.log(o[/rx/]);
+    }
+    expect: {
+        var o = {
+            "/rx/": 1
+        };
+        console.log(o[/rx/]);
+    }
+    expect_stdout: "1"
+}
+
+issue_2816: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        "use strict";
+        var o = {
+            a: 1
+        };
+        o.b = 2;
+        o.a = 3;
+        o.c = 4;
+        console.log(o.a, o.b, o.c);
+    }
+    expect: {
+        "use strict";
+        var o = {
+            a: 1,
+            b: 2
+        };
+        o.a = 3;
+        o.c = 4;
+        console.log(o.a, o.b, o.c);
+    }
+    expect_stdout: "3 2 4"
+}
+
+issue_2893_1: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        var o = {
+            get a() {
+                return "PASS";
+            },
+        };
+        o.a = "FAIL";
+        console.log(o.a);
+    }
+    expect: {
+        var o = {
+            get a() {
+                return "PASS";
+            },
+        };
+        o.a = "FAIL";
+        console.log(o.a);
+    }
+    expect_stdout: "PASS"
+}
+
+issue_2893_2: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        var o = {
+            set a(v) {
+                this.b = v;
+            },
+            b: "FAIL",
+        };
+        o.a = "PASS";
+        console.log(o.b);
+    }
+    expect: {
+        var o = {
+            set a(v) {
+                this.b = v;
+            },
+            b: "FAIL",
+        };
+        o.a = "PASS";
+        console.log(o.b);
+    }
+    expect_stdout: "PASS"
+}
+
+join_expr: {
+    options = {
+        evaluate: true,
+        join_vars: true,
+    }
+    input: {
+        var c = "FAIL";
+        (function() {
+            var a = 0;
+            switch ((a = {}) && (a.b = 0)) {
+              case 0:
+                c = "PASS";
+            }
+        })();
+        console.log(c);
+    }
+    expect: {
+        var c = "FAIL";
+        (function() {
+            var a = 0, a = { b: 0 };
+            switch (a.b) {
+              case 0:
+                c = "PASS";
+            }
+        })();
+        console.log(c);
+    }
+    expect_stdout: "PASS"
+}
+
+issue_3786: {
+    options = {
+        join_vars: true,
+    }
+    input: {
+        try {
+            var a = b;
+            b = 0;
+            console.log("FAIL");
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect: {
+        try {
+            var a = b;
+            b = 0;
+            console.log("FAIL");
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect_stdout: "PASS"
+}
+
+issue_3788: {
+    options = {
+        inline: true,
+        join_vars: true,
+        reduce_vars: true,
+        sequences: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = "FAIL";
+        function f() {
+            function g() {
+                function h() {
+                    a = 42;
+                    a = "PASS";
+                    return "PASS";
+                }
+                var b = h();
+                console.log(b);
+            }
+            g();
+        }
+        f();
+        console.log(a);
+    }
+    expect: {
+        var b, a = "FAIL";
+        a = 42,
+        a = "PASS",
+        b = "PASS",
+        console.log(b),
+        console.log(a);
+    }
+    expect_stdout: [
+        "PASS",
+        "PASS",
+    ]
+}
diff --git a/test/compress/properties.js b/test/compress/properties.js
index b23c362c..364eb97e 100644
--- a/test/compress/properties.js
+++ b/test/compress/properties.js
@@ -1143,558 +1143,6 @@ const_prop_assign_pure: {
     }
 }
 
-join_object_assignments_1: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var x = {
-                a: 1,
-                c: (console.log("c"), "C"),
-            };
-            x.b = 2;
-            x[3] = function() {
-                console.log(x);
-            },
-            x["a"] = /foo/,
-            x.bar = x;
-            return x;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var x = {
-                a: 1,
-                c: (console.log("c"), "C"),
-                b: 2,
-                3: function() {
-                    console.log(x);
-                },
-                a: /foo/,
-            };
-            x.bar = x;
-            return x;
-        }());
-    }
-    expect_stdout: true
-}
-
-join_object_assignments_2: {
-    options = {
-        evaluate: true,
-        hoist_props: true,
-        join_vars: true,
-        passes: 3,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        var o = {
-            foo: 1,
-        };
-        o.bar = 2;
-        o.baz = 3;
-        console.log(o.foo, o.bar + o.bar, o.foo * o.bar * o.baz);
-    }
-    expect: {
-        console.log(1, 4, 6);
-    }
-    expect_stdout: "1 4 6"
-}
-
-join_object_assignments_3: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var o = {
-                a: "PASS",
-            }, a = o.a;
-            o.a = "FAIL";
-            return a;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var o = {
-                a: "PASS",
-            }, a = o.a;
-            o.a = "FAIL";
-            return a;
-        }());
-    }
-    expect_stdout: "PASS"
-}
-
-join_object_assignments_4: {
-    options = {
-        join_vars: true,
-        sequences: true,
-    }
-    input: {
-        var o;
-        console.log(o);
-        o = {};
-        o.a = "foo";
-        console.log(o.b);
-        o.b = "bar";
-        console.log(o.a);
-    }
-    expect: {
-        var o;
-        console.log(o),
-        o = {
-            a: "foo",
-        },
-        console.log(o.b),
-        o.b = "bar",
-        console.log(o.a);
-    }
-    expect_stdout: [
-        "undefined",
-        "undefined",
-        "foo",
-    ]
-}
-
-join_object_assignments_return_1: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var o = {
-                p: 3
-            };
-            return o.q = "foo";
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var o = {
-                p: 3,
-                q: "foo"
-            };
-            return o.q;
-        }());
-    }
-    expect_stdout: "foo"
-}
-
-join_object_assignments_return_2: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var o = {
-                p: 3
-            };
-            return o.q = /foo/,
-            o.r = "bar";
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var o = {
-                p: 3,
-                q: /foo/,
-                r: "bar"
-            };
-            return o.r;
-        }());
-    }
-    expect_stdout: "bar"
-}
-
-join_object_assignments_return_3: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var o = {
-                p: 3
-            };
-            return o.q = "foo",
-            o.p += "",
-            console.log(o.q),
-            o.p;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var o = {
-                p: 3,
-                q: "foo"
-            };
-            return o.p += "",
-            console.log(o.q),
-            o.p;
-        }());
-    }
-    expect_stdout: [
-        "foo",
-        "3",
-    ]
-}
-
-join_object_assignments_for: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var o = {
-                p: 3
-            };
-            for (o.q = "foo"; console.log(o.q););
-            return o.p;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            for (var o = {
-                p: 3,
-                q: "foo"
-            }; console.log(o.q););
-            return o.p;
-        }());
-    }
-    expect_stdout: [
-        "foo",
-        "3",
-    ]
-}
-
-join_object_assignments_if: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var o = {};
-            if (o.a = "PASS") return o.a;
-        }())
-    }
-    expect: {
-        console.log(function() {
-            var o = { a: "PASS" };
-            if (o.a) return o.a;
-        }());
-    }
-    expect_stdout: "PASS"
-}
-
-join_object_assignments_forin: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var o = {};
-            for (var a in o.a = "PASS", o)
-                return o[a];
-        }())
-    }
-    expect: {
-        console.log(function() {
-            var o = { a: "PASS" };
-            for (var a in o)
-                return o[a];
-        }());
-    }
-    expect_stdout: "PASS"
-}
-
-join_object_assignments_negative: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-        properties: true,
-    }
-    input: {
-        var o = {};
-        o[0] = 0;
-        o[-0] = 1;
-        o[-1] = 2;
-        console.log(o[0], o[-0], o[-1]);
-    }
-    expect: {
-        var o = {
-            0: 0,
-            0: 1,
-            "-1": 2
-        };
-        console.log(o[0], o[-0], o[-1]);
-    }
-    expect_stdout: "1 1 2"
-}
-
-join_object_assignments_NaN_1: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        var o = {};
-        o[NaN] = 1;
-        o[0/0] = 2;
-        console.log(o[NaN], o[NaN]);
-    }
-    expect: {
-        var o = {};
-        o[NaN] = 1;
-        o[0/0] = 2;
-        console.log(o[NaN], o[NaN]);
-    }
-    expect_stdout: "2 2"
-}
-
-join_object_assignments_NaN_2: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-        properties: true,
-    }
-    input: {
-        var o = {};
-        o[NaN] = 1;
-        o[0/0] = 2;
-        console.log(o[NaN], o[NaN]);
-    }
-    expect: {
-        var o = {
-            NaN: 1,
-            NaN: 2
-        };
-        console.log(o.NaN, o.NaN);
-    }
-    expect_stdout: "2 2"
-}
-
-join_object_assignments_null_0: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        var o = {};
-        o[null] = 1;
-        console.log(o[null]);
-    }
-    expect: {
-        var o = {};
-        o[null] = 1;
-        console.log(o[null]);
-    }
-    expect_stdout: "1"
-}
-
-join_object_assignments_null_1: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-        properties: true,
-    }
-    input: {
-        var o = {};
-        o[null] = 1;
-        console.log(o[null]);
-    }
-    expect: {
-        var o = {
-            null: 1
-        };
-        console.log(o.null);
-    }
-    expect_stdout: "1"
-}
-
-join_object_assignments_void_0: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-    }
-    input: {
-        var o = {};
-        o[void 0] = 1;
-        console.log(o[void 0]);
-    }
-    expect: {
-        var o = {
-            undefined: 1
-        };
-        console.log(o[void 0]);
-    }
-    expect_stdout: "1"
-}
-
-join_object_assignments_undefined_1: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        var o = {};
-        o[undefined] = 1;
-        console.log(o[undefined]);
-    }
-    expect: {
-        var o = {};
-        o[void 0] = 1;
-        console.log(o[void 0]);
-    }
-    expect_stdout: "1"
-}
-
-join_object_assignments_undefined_2: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-        properties: true,
-    }
-    input: {
-        var o = {};
-        o[undefined] = 1;
-        console.log(o[undefined]);
-    }
-    expect: {
-        var o = {
-            undefined : 1
-        };
-        console.log(o[void 0]);
-    }
-    expect_stdout: "1"
-}
-
-join_object_assignments_Infinity: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-        properties: true,
-    }
-    input: {
-        var o = {};
-        o[Infinity] = 1;
-        o[1/0] = 2;
-        o[-Infinity] = 3;
-        o[-1/0] = 4;
-        console.log(o[Infinity], o[1/0], o[-Infinity], o[-1/0]);
-    }
-    expect: {
-        var o = {
-            Infinity: 1,
-            Infinity: 2,
-            "-Infinity": 3,
-            "-Infinity": 4
-        };
-        console.log(o[1/0], o[1/0], o[-1/0], o[-1/0]);
-    }
-    expect_stdout: "2 2 4 4"
-}
-
-join_object_assignments_regex: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-        properties: true,
-    }
-    input: {
-        var o = {};
-        o[/rx/] = 1;
-        console.log(o[/rx/]);
-    }
-    expect: {
-        var o = {
-            "/rx/": 1
-        };
-        console.log(o[/rx/]);
-    }
-    expect_stdout: "1"
-}
-
-issue_2816: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        "use strict";
-        var o = {
-            a: 1
-        };
-        o.b = 2;
-        o.a = 3;
-        o.c = 4;
-        console.log(o.a, o.b, o.c);
-    }
-    expect: {
-        "use strict";
-        var o = {
-            a: 1,
-            b: 2
-        };
-        o.a = 3;
-        o.c = 4;
-        console.log(o.a, o.b, o.c);
-    }
-    expect_stdout: "3 2 4"
-}
-
-issue_2893_1: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        var o = {
-            get a() {
-                return "PASS";
-            },
-        };
-        o.a = "FAIL";
-        console.log(o.a);
-    }
-    expect: {
-        var o = {
-            get a() {
-                return "PASS";
-            },
-        };
-        o.a = "FAIL";
-        console.log(o.a);
-    }
-    expect_stdout: "PASS"
-}
-
-issue_2893_2: {
-    options = {
-        join_vars: true,
-    }
-    input: {
-        var o = {
-            set a(v) {
-                this.b = v;
-            },
-            b: "FAIL",
-        };
-        o.a = "PASS";
-        console.log(o.b);
-    }
-    expect: {
-        var o = {
-            set a(v) {
-                this.b = v;
-            },
-            b: "FAIL",
-        };
-        o.a = "PASS";
-        console.log(o.b);
-    }
-    expect_stdout: "PASS"
-}
-
 issue_869_1: {
     mangle = {
         properties: {
@@ -1856,36 +1304,6 @@ issue_3188_3: {
     expect_stdout: "PASS"
 }
 
-join_expr: {
-    options = {
-        evaluate: true,
-        join_vars: true,
-    }
-    input: {
-        var c = "FAIL";
-        (function() {
-            var a = 0;
-            switch ((a = {}) && (a.b = 0)) {
-              case 0:
-                c = "PASS";
-            }
-        })();
-        console.log(c);
-    }
-    expect: {
-        var c = "FAIL";
-        (function() {
-            var a = 0, a = { b: 0 };
-            switch (a.b) {
-              case 0:
-                c = "PASS";
-            }
-        })();
-        console.log(c);
-    }
-    expect_stdout: "PASS"
-}
-
 issue_3389: {
     options = {
         evaluate: true,