vlib,tests: fix array's field initialisation with signed integers (preparation for future 64bit int) (#25324)

Author: kbkpbot

vlib/v/checker/containers.v

@@ -328,8 +328,14 @@ fn (mut c Checker) check_array_init_default_expr(mut node ast.ArrayInit) {
 
 fn (mut c Checker) check_array_init_para_type(para string, mut expr ast.Expr, pos token.Pos) {
 	sym := c.table.final_sym(c.unwrap_generic(c.expr(mut expr)))
-	if sym.kind !in [.int, .int_literal] {
-		c.error('array ${para} needs to be an int', pos)
+	$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+		if sym.kind !in [.int, .int_literal, .i64, .i32, .i16, .i8] {
+			c.error('array ${para} needs to be an int/i64/i32/i16/i8', pos)
+		}
+	} $else {
+		if sym.kind !in [.int, .int_literal, .i32, .i16, .i8] {
+			c.error('array ${para} needs to be an int/i32/i16/i8', pos)
+		}
 	}
 	if expr is ast.IntegerLiteral {
 		lit := expr as ast.IntegerLiteral

vlib/v/gen/c/testdata/translated/sym.c

@@ -2,6 +2,6 @@ struct my_struct {
        bool active;
 } my_instance = { true };
 
-int ExternalSymbol(char *hello) {
+i32 ExternalSymbol(char *hello) {
 	return *hello;
 }

vlib/v/gen/c/testdata/translated/translated_module_actual.v

@@ -4,7 +4,7 @@ module translated
 #include "@VMODROOT/sym.c"
 
 @[c: 'ExternalSymbol']
-pub fn external_symbol(&char) int
+pub fn external_symbol(&char) i32
 
 struct C.my_struct {
 	active bool

vlib/v/gen/c/testdata/translated_module.c.must_have

@@ -1,3 +1,3 @@
-int ExternalSymbol(char* );
-int a = ExternalSymbol("hello");
+i32 ExternalSymbol(char* );
+i32 a = ExternalSymbol("hello");
 extern struct my_struct my_instance;