gcc/testsuite/gcc.dg/cpp/pr101638.c - gcc - Git at Google

 /* PR preprocessor/101638 */
 /* { dg-do preprocess } */
 /* { dg-options "-Wtraditional" } */

 #define foo(attr) __has_attribute(attr)
 #if foo(__deprecated__)
 #endif
	/* PR preprocessor/101638 */
	/* { dg-do preprocess } */
	/* { dg-options "-Wtraditional" } */

	#define foo(attr) __has_attribute(attr)
	#if foo(__deprecated__)
	#endif