gcc/testsuite/gcc.dg/gnu23-opts-2.c - gcc - Git at Google

 /* Test the deprecated option -std=gnu2x.  */
 /* { dg-do compile } */
 /* { dg-options "-std=gnu2x" } */

 auto p = nullptr;
	/* Test the deprecated option -std=gnu2x. */
	/* { dg-do compile } */
	/* { dg-options "-std=gnu2x" } */

	auto p = nullptr;