?? with void results on both sides cause a compiler crash #2472

test/test_suite/errors/else_with_void.c3t

@@ -0,0 +1,54 @@
+// #target: macos-x64
+module func_point_test;
+import std::io;
+import std::collections;
+
+alias FuncPoint = fn void(String text);
+
+fn void test(String text = "test123")
+{
+	io::printn(text);
+}
+
+fn void main()
+{
+	HashMap{String, FuncPoint} map;
+	map.tinit();
+	map.set("test", &test);
+
+	String test_index = "index";
+
+	map[test_index]("Hello World") ?? test();
+}
+
+/* #expect: func_point_test.ll
+
+define void @func_point_test.main() #0 {
+entry:
+  %map = alloca %HashMap, align 8
+  %test_index = alloca %"char[]", align 8
+  %retparam = alloca ptr, align 8
+  call void @llvm.memset.p0.i64(ptr align 8 %map, i8 0, i64 48, i1 false)
+  %0 = call ptr @"std_collections_map$String$fn$void$String$$.HashMap.tinit"(ptr %map, i32 16, float 7.500000e-01)
+  %1 = call i8 @"std_collections_map$String$fn$void$String$$.HashMap.set"(ptr %map, ptr @.str, i64 4, ptr @func_point_test.test)
+  store %"char[]" { ptr @.str.1, i64 5 }, ptr %test_index, align 8
+  %lo = load ptr, ptr %test_index, align 8
+  %ptradd = getelementptr inbounds i8, ptr %test_index, i64 8
+  %hi = load i64, ptr %ptradd, align 8
+  %2 = call i64 @"std_collections_map$String$fn$void$String$$.HashMap.get"(ptr %retparam, ptr %map, ptr %lo, i64 %hi)
+  %not_err = icmp eq i64 %2, 0
+  %3 = call i1 @llvm.expect.i1(i1 %not_err, i1 true)
+  br i1 %3, label %after_check, label %else_block
+
+after_check:                                      ; preds = %entry
+  %4 = load ptr, ptr %retparam, align 8
+  call void %4(ptr @.str.2, i64 11)
+  br label %phi_block
+
+else_block:                                       ; preds = %entry
+  call void @func_point_test.test(ptr @.str.3, i64 7)
+  br label %phi_block
+
+phi_block:                                        ; preds = %else_block, %after_check
+  ret void
+}