cgen: fix printing multiple fixed array (fix #18866) (#18879)

vlib/v/ast/str.v

@@ -357,10 +357,19 @@ pub fn (x Expr) str() string {
 			if x.has_default {
 				fields << 'init: ${x.default_expr.str()}'
 			}
+			typ_str := global_table.type_to_str(x.elem_type)
 			if fields.len > 0 {
-				return '[]T{${fields.join(', ')}}'
+				if x.is_fixed {
+					return '${x.exprs.str()}${typ_str}{${fields.join(', ')}}'
+				} else {
+					return '[]${typ_str}{${fields.join(', ')}}'
+				}
 			} else {
-				return x.exprs.str()
+				if x.is_fixed {
+					return '${x.exprs.str()}${typ_str}{}'
+				} else {
+					return x.exprs.str()
+				}
 			}
 		}
 		AsCast {

vlib/v/gen/c/array.v

@@ -191,12 +191,14 @@ fn (mut g Gen) fixed_array_init(node ast.ArrayInit, array_type Type, var_name st
 			info := array_type.unaliased_sym.info as ast.ArrayFixed
 			arr_info := elem_sym.array_fixed_info()
 			g.expr(ast.ArrayInit{
+				exprs: [ast.IntegerLiteral{}]
 				typ: node.elem_type
 				elem_type: arr_info.elem_type
 			})
 			for _ in 1 .. info.size {
 				g.write(', ')
 				g.expr(ast.ArrayInit{
+					exprs: [ast.IntegerLiteral{}]
 					typ: node.elem_type
 					elem_type: arr_info.elem_type
 				})

vlib/v/gen/c/dumpexpr.v

@@ -60,6 +60,14 @@ fn (mut g Gen) dump_expr(node ast.DumpExpr) {
 		g.expr(node.expr)
 		g.write('.data)')
 		g.inside_opt_or_res = old_inside_opt_or_res
+	} else if node.expr is ast.ArrayInit {
+		if node.expr.is_fixed {
+			s := g.typ(node.expr.typ)
+			if !node.expr.has_index {
+				g.write('(${s})')
+			}
+		}
+		g.expr(node.expr)
 	} else {
 		old_inside_opt_or_res := g.inside_opt_or_res
 		g.inside_opt_or_res = true

vlib/v/slow_tests/inout/dump_multi_fixed_array_init.out

@@ -0,0 +1 @@
+[vlib/v/slow_tests/inout/dump_multi_fixed_array_init.vv:2] [2][3]int{}: [[0, 0, 0], [0, 0, 0]]

vlib/v/slow_tests/inout/dump_multi_fixed_array_init.vv

@@ -0,0 +1,3 @@
+fn main() {
+	dump([2][3]int{})
+}

vlib/v/slow_tests/inout/printing_multi_fixed_array_init.out

@@ -0,0 +1 @@
+[[0, 0, 0], [0, 0, 0]]

vlib/v/slow_tests/inout/printing_multi_fixed_array_init.vv

@@ -0,0 +1,3 @@
+fn main() {
+	println([2][3]int{})
+}