Add test for defining an alias to a function-like macro

test/testwave/testfiles/t_2_033.cpp

@@ -0,0 +1,56 @@
+/*=============================================================================
+    Boost.Wave: A Standard compliant C++ preprocessor library
+    http://www.boost.org/
+
+    Copyright (c) 2026 Martin Medler. Distributed under the Boost
+    Software License, Version 1.0. (See accompanying file
+    LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+=============================================================================*/
+
+//O -Werror
+
+// Verify a function-like macro can be invoked through an object-like alias.
+
+#define SQUARE_FUNCTION(x) (x) * (x)
+#define SQUARE_FUNCTION_ALIAS SQUARE_FUNCTION
+
+#if SQUARE_FUNCTION_ALIAS(2) == 4
+#define EXECUTED_SQUARE_FUNCTION_PART_1
+#else
+#warning executing functional macro failed Part 1
+#endif
+
+//H 10: t_2_033.cpp(14): #define
+//H 08: t_2_033.cpp(14): SQUARE_FUNCTION(x)=(x) * (x)
+//H 10: t_2_033.cpp(15): #define
+//H 08: t_2_033.cpp(15): SQUARE_FUNCTION_ALIAS=SQUARE_FUNCTION
+//H 10: t_2_033.cpp(17): #if
+//H 01: t_2_033.cpp(15): SQUARE_FUNCTION_ALIAS
+//H 02: SQUARE_FUNCTION
+//H 03: SQUARE_FUNCTION
+//H 00: t_2_033.cpp(15): SQUARE_FUNCTION(2), [t_2_033.cpp(14): SQUARE_FUNCTION(x)=(x) * (x)]
+//H 02: (2) * (2)
+//H 03: (2) * (2)
+//H 11: t_2_033.cpp(17): #if SQUARE_FUNCTION_ALIAS(2) == 4: 1
+//H 10: t_2_033.cpp(18): #define
+//H 08: t_2_033.cpp(18): EXECUTED_SQUARE_FUNCTION_PART_1=
+//H 10: t_2_033.cpp(19): #else
+
+// Verify we did not take the desired branch by chance
+#if SQUARE_FUNCTION_ALIAS(3) != 9
+#warning executing functional macro failed Part 2
+#else
+#define EXECUTED_SQUARE_FUNCTION_PART_2
+#endif
+
+//H 10: t_2_033.cpp(40): #if
+//H 01: t_2_033.cpp(15): SQUARE_FUNCTION_ALIAS
+//H 02: SQUARE_FUNCTION
+//H 03: SQUARE_FUNCTION
+//H 00: t_2_033.cpp(15): SQUARE_FUNCTION(3), [t_2_033.cpp(14): SQUARE_FUNCTION(x)=(x) * (x)]
+//H 02: (3) * (3)
+//H 03: (3) * (3)
+//H 11: t_2_033.cpp(40): #if SQUARE_FUNCTION_ALIAS(3) != 9: 0
+//H 10: t_2_033.cpp(43): #define
+//H 08: t_2_033.cpp(43): EXECUTED_SQUARE_FUNCTION_PART_2=
+//H 10: t_2_033.cpp(44): #endif

test/testwave/testfiles/test.cfg

@@ -85,6 +85,7 @@ t_2_029.cpp
 t_2_030.cpp
 t_2_031.cpp
 t_2_032.cpp
+t_2_033.cpp
 
 #
 # t_3: Predefined macros