testsuite - Require alias support for three tests.

2019-01-08  Iain Sandoe  <iain@sandoe.co.uk>

gcc/testsuite/

	* gcc.dg/Wmissing-attributes.c: Require alias support.
	* gcc.dg/attr-copy-2.c: Likewise.
	* gcc.dg/attr-copy-5.c: Likewise.

From-SVN: r267673

gcc/testsuite/ChangeLog

+2019-01-08  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* gcc.dg/Wmissing-attributes.c: Require alias support.
+	* gcc.dg/attr-copy-2.c: Likewise.
+	* gcc.dg/attr-copy-5.c: Likewise.
+
 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
 	    Jakub Jelinek  <jakub@redhat.com>
 

gcc/testsuite/gcc.dg/Wmissing-attributes.c

 /* PR middle-end/81824 - Warn for missing attributes with function aliases
    { dg-do compile }
+   { dg-require-alias "" }
    { dg-options "-Wall" } */
 
 #define ATTR(list)   __attribute__ (list)

gcc/testsuite/gcc.dg/attr-copy-2.c

 /* PR middle-end/81824 - Warn for missing attributes with function aliases
    Exercise attribute copy for functions.
    { dg-do compile }
+   { dg-require-alias "" }
    { dg-options "-O2 -Wall" } */
 
 #define Assert(expr)   typedef char AssertExpr[2 * !!(expr) - 1]

gcc/testsuite/gcc.dg/attr-copy-5.c

@@ -3,6 +3,7 @@
    copied.  Also verify that copying attribute tls_model to a non-thread
    variable triggers a warning.
    { dg-do compile }
+   { dg-require-alias "" }
    { dg-options "-Wall" }
    { dg-require-effective-target tls } */