Add usability error message for "throw expr" without parens

And update dates to 2026

Author: hsutter

include/cpp2regex.h

@@ -82,7 +82,7 @@ template<typename CharT, typename matcher> class regular_expression;
 
 #line 1 "cpp2regex.h2"
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.

include/cpp2regex.h2

@@ -1,5 +1,5 @@
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.

include/cpp2util.h

@@ -1,5 +1,5 @@
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.

regression-tests/test-results/version

@@ -1,4 +1,4 @@
 
-cppfront compiler v0.8.2 Build AA17:1543
+cppfront compiler v0.8.2 Build B104:1508
 SPDX-License-Identifier  Apache-2.0 WITH LLVM-exception
-Copyright (c) 2022-2025  Herb Sutter
+Copyright (c) 2022-2026  Herb Sutter

source/build.info

@@ -1 +1 @@
-"AA17:1543"
+"B104:1508"

source/common.h

@@ -1,5 +1,5 @@
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.
@@ -913,7 +913,7 @@ class cmdline_processor
             #include "build.info"
         );
         print("\nSPDX-License-Identifier  Apache-2.0 WITH LLVM-exception");
-        print("\nCopyright (c) 2022-2025  Herb Sutter\n");
+        print("\nCopyright (c) 2022-2026  Herb Sutter\n");
     }
 
 } cmdline;

source/cppfront.cpp

@@ -1,5 +1,5 @@
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.

source/io.h

@@ -1,5 +1,5 @@
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.

source/lex.h

@@ -1,5 +1,5 @@
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.

source/parse.h

@@ -1,5 +1,5 @@
 
-//  Copyright 2022-2025 Herb Sutter
+//  Copyright 2022-2026 Herb Sutter
 //  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //  
 //  Part of the Cppfront Project, under the Apache License v2.0 with LLVM Exceptions.
@@ -6980,6 +6980,16 @@ class parser
     auto postfix_expression()
         -> std::unique_ptr<postfix_expression_node>
     {
+        if (
+            curr() == "throw"
+            && peek(1)
+            && peek(1)->type() != lexeme::LeftParen
+            )
+        {
+            error("'throw " + peek(1)->to_string() + "' is not allowed without parentheses - did you mean 'throw (" + *peek(1) + "))' ?");
+            return {};
+        }
+
         auto n = std::make_unique<postfix_expression_node>();
         n->expr = primary_expression();
         if (!(n->expr)) {