cgen: fix [1, 2, 3]!.map(it * 2) (#22722)

vlib/builtin/fixed_array_map_test.v

@@ -4,24 +4,42 @@ fn test_fixed_array_map() {
 	b1 := a.map(it * 2)
 	println(b1)
 	assert b1 == [2, 4, 6]!
+	b10 := [1, 2, 3]!.map(it * 2)
+	assert b10 == [2, 4, 6]!
+	assert [1, 2, 3]!.map(it * 2) == [2, 4, 6]!
 
 	b11 := a.map(|x| x * 2)
 	println(b11)
 	assert b11 == [2, 4, 6]!
+	b110 := [1, 2, 3]!.map(|x| x * 2)
+	assert b110 == [2, 4, 6]!
+	assert [1, 2, 3]!.map(|x| x * 2) == [2, 4, 6]!
 
 	b2 := a.map('${it}')
 	println(b2)
 	assert b2 == ['1', '2', '3']!
+	b20 := [1, 2, 3]!.map('${it}')
+	assert b20 == ['1', '2', '3']!
+	assert [1, 2, 3]!.map('${it}') == ['1', '2', '3']!
 
 	b22 := a.map(|x| '${x}')
 	println(b22)
 	assert b22 == ['1', '2', '3']!
+	b220 := [1, 2, 3]!.map(|x| '${x}')
+	assert b220 == ['1', '2', '3']!
+	assert [1, 2, 3]!.map(|x| '${x}') == ['1', '2', '3']!
 
 	b3 := a.map(it + 2)
 	println(b3)
 	assert b3 == [3, 4, 5]!
+	b30 := [1, 2, 3]!.map(it + 2)
+	assert b30 == [3, 4, 5]!
+	assert [1, 2, 3]!.map(it + 2) == [3, 4, 5]!
 
 	b33 := a.map(|x| x + 2)
 	println(b33)
 	assert b33 == [3, 4, 5]!
+	b330 := [1, 2, 3]!.map(|x| x + 2)
+	assert b330 == [3, 4, 5]!
+	assert [1, 2, 3]!.map(|x| x + 2) == [3, 4, 5]!
 }

vlib/v/gen/c/array.v

@@ -1585,6 +1585,17 @@ fn (mut g Gen) write_prepared_tmp_value(tmp string, node &ast.CallExpr, tmp_styp
 		left_styp := g.styp(left_type)
 		g.writeln('${left_styp} ${tmp}_orig;')
 		g.write('memcpy(&${tmp}_orig, &')
+		if node.left is ast.ArrayInit {
+			if g.is_cc_msvc {
+				stmts := g.go_before_last_stmt().trim_space()
+				tmp_var := g.new_tmp_var()
+				g.write2('${left_styp} ${tmp_var} = ${g.expr_string(node.left)};', stmts)
+				g.write(tmp_var)
+			} else {
+				g.write('(${left_styp})')
+				g.expr(node.left)
+			}
+		} else {
 			if !node.left_type.has_flag(.shared_f) && node.left_type.is_ptr() {
 				g.write('*')
 			}
@@ -1592,6 +1603,7 @@ fn (mut g Gen) write_prepared_tmp_value(tmp string, node &ast.CallExpr, tmp_styp
 			if node.left_type.has_flag(.shared_f) {
 				g.write('->val')
 			}
+		}
 		g.writeln(', sizeof(${left_styp}));')
 		g.writeln('int ${tmp}_len = ${left_info.size};')
 	}

vlib/v/gen/c/ctempvars.v

@@ -19,8 +19,15 @@ fn (mut g Gen) new_ctemp_var_then_gen(expr ast.Expr, expr_type ast.Type) ast.CTe
 
 fn (mut g Gen) gen_ctemp_var(tvar ast.CTempVar) {
 	styp := g.styp(tvar.typ)
+	if g.table.final_sym(tvar.typ).kind == .array_fixed {
+		g.writeln('${styp} ${tvar.name};')
+		g.write('memcpy(&${tvar.name}, &')
+		g.expr(tvar.orig)
+		g.writeln(' , sizeof(${styp}));')
+	} else {
 		g.write('${styp} ${tvar.name} = ')
 		g.expr(tvar.orig)
 		g.writeln(';')
+	}
 	g.set_current_pos_as_last_stmt_pos()
 }