Wbuiltin-declaration-mismatch-12.c: New test.

gcc/testsuite/ChangeLog:
	* gcc.dg/Wbuiltin-declaration-mismatch-12.c: New test.

From-SVN: r269120

gcc/testsuite/ChangeLog

+2019-02-22  Martin Sebor  <msebor@redhat.com>
+
+	* gcc.dg/Wbuiltin-declaration-mismatch-12.c: New test.
+
 2019-02-22  H.J. Lu  <hongjiu.lu@intel.com>
 	    Hongtao Liu  <hongtao.liu@intel.com>
 	    Sunil K Pandey  <sunil.k.pandey@intel.com>

gcc/testsuite/gcc.dg/Wbuiltin-declaration-mismatch-12.c

+/* Verify that declaring the __clear_cache and __builtin_prefetch
+   intrinsic functions with the wrong signature is diagnosed.
+   { dg-do compile }
+   { dg-options "-Wbuiltin-declaration-mismatch -Wextra" } */
+
+extern void __clear_cache (char*, char*);   /* { dg-warning "mismatch in argument 1 type of built-in function .__clear_cache.; expected .void \\\*." } */
+
+void __builtin_prefetch (const char *, ...);   /* { dg-warning "mismatch in argument 1 type of built-in function .__builtin_prefetch.; expected .const void \\\*." } */