-dynamic-literals

src/build_settings.cpp

@@ -459,6 +459,7 @@ struct BuildContext {
 	bool   ignore_unknown_attributes;
 	bool   no_bounds_check;
 	bool   no_type_assert;
+	bool   dynamic_literals;  // Opt-in to `#+feature dynamic-literals` project-wide.
 	bool   no_output_files;
 	bool   no_crt;
 	bool   no_rpath;

src/check_expr.cpp

@@ -9433,7 +9433,7 @@ gb_internal bool is_expr_inferred_fixed_array(Ast *type_expr) {
 }
 
 gb_internal bool check_for_dynamic_literals(CheckerContext *c, Ast *node, AstCompoundLit *cl) {
-	if (cl->elems.count > 0 && (check_feature_flags(c, node) & OptInFeatureFlag_DynamicLiterals) == 0) {
+	if (cl->elems.count > 0 && (check_feature_flags(c, node) & OptInFeatureFlag_DynamicLiterals) == 0 && !build_context.dynamic_literals) {
 		ERROR_BLOCK();
 		error(node, "Compound literals of dynamic types are disabled by default");
 		error_line("\tSuggestion: If you want to enable them for this specific file, add '#+feature dynamic-literals' at the top of the file\n");

src/llvm_backend_expr.cpp

@@ -4844,7 +4844,7 @@ gb_internal lbAddr lb_build_addr_compound_lit(lbProcedure *p, Ast *expr) {
 		if (cl->elems.count == 0) {
 			break;
 		}
-		GB_ASSERT(expr->file()->feature_flags & OptInFeatureFlag_DynamicLiterals);
+		GB_ASSERT(expr->file()->feature_flags & OptInFeatureFlag_DynamicLiterals || build_context.dynamic_literals);
 
 		lbValue err = lb_dynamic_map_reserve(p, v.addr, 2*cl->elems.count, pos);
 		gb_unused(err);

src/main.cpp

@@ -319,6 +319,7 @@ enum BuildFlagKind {
 	BuildFlag_NoBoundsCheck,
 	BuildFlag_NoTypeAssert,
 	BuildFlag_NoDynamicLiterals,
+	BuildFlag_DynamicLiterals,
 	BuildFlag_NoCRT,
 	BuildFlag_NoRPath,
 	BuildFlag_NoEntryPoint,
@@ -538,6 +539,7 @@ gb_internal bool parse_build_flags(Array<String> args) {
 	add_flag(&build_flags, BuildFlag_NoTypeAssert,            str_lit("no-type-assert"),            BuildFlagParam_None,    Command__does_check);
 	add_flag(&build_flags, BuildFlag_NoThreadLocal,           str_lit("no-thread-local"),           BuildFlagParam_None,    Command__does_check);
 	add_flag(&build_flags, BuildFlag_NoDynamicLiterals,       str_lit("no-dynamic-literals"),       BuildFlagParam_None,    Command__does_check);
+	add_flag(&build_flags, BuildFlag_DynamicLiterals,         str_lit("dynamic-literals"),          BuildFlagParam_None,    Command__does_check);
 	add_flag(&build_flags, BuildFlag_NoCRT,                   str_lit("no-crt"),                    BuildFlagParam_None,    Command__does_build);
 	add_flag(&build_flags, BuildFlag_NoRPath,                 str_lit("no-rpath"),                  BuildFlagParam_None,    Command__does_build);
 	add_flag(&build_flags, BuildFlag_NoEntryPoint,            str_lit("no-entry-point"),            BuildFlagParam_None,    Command__does_check &~ Command_test);
@@ -1207,6 +1209,9 @@ gb_internal bool parse_build_flags(Array<String> args) {
 						case BuildFlag_NoDynamicLiterals:
 							gb_printf_err("Warning: Use of -no-dynamic-literals is now redundant\n");
 							break;
+						case BuildFlag_DynamicLiterals:
+							build_context.dynamic_literals = true;
+							break;
 						case BuildFlag_NoCRT:
 							build_context.no_crt = true;
 							break;