common.opt (-Wattribute-alias): Remove "no-" from name.

2019-01-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * common.opt (-Wattribute-alias): Remove "no-" from name.
        Make -Wattribute-alias command line option and
        #pragma GCC diagnostic ignored "-Wattribute-alias" work again.

testsuite:
2019-01-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gcc.dg/Wattribute-alias.c: Add test for #pragma GCC diagnostic ignored
        "-Wattribute-alias".

From-SVN: r268336

gcc/ChangeLog

+2019-01-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>
+
+	* common.opt (-Wattribute-alias): Remove "no-" from name.
+	Make -Wattribute-alias command line option and
+	#pragma GCC diagnostic ignored "-Wattribute-alias" work again.
+
 2019-01-28  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/89073

gcc/common.opt

@@ -550,14 +550,14 @@ Wattributes
 Common Var(warn_attributes) Init(1) Warning
 Warn about inappropriate attribute usage.
 
+Wattribute-alias
+Common Alias(Wattribute_alias=, 1, 0) Warning
+Warn about type safety and similar errors and mismatches in attribute alias and related.
+
 Wattribute-alias=
 Common Joined RejectNegative UInteger Var(warn_attribute_alias) Init(1) Warning IntegerRange(0, 2)
 Warn about type safety and similar errors and mismatches in attribute alias and related.
 
-Wno-attribute-alias
-Common Alias(Wattribute_alias=, 0, 0) Warning
-Disable -Wattribute-alias.
-
 Wcannot-profile
 Common Var(warn_cannot_profile) Init(1) Warning
 Warn when profiling instrumentation was requested, but could not be applied to

gcc/testsuite/ChangeLog

+2019-01-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>
+
+	* gcc.dg/Wattribute-alias.c: Add test for #pragma GCC diagnostic ignored
+	"-Wattribute-alias".
+
 2019-01-27  Uroš Bizjak  <ubizjak@gmail.com>
 
 	PR fortran/70696

gcc/testsuite/gcc.dg/Wattribute-alias.c

@@ -14,6 +14,13 @@ ATTR (alias ("target_no_nothrow"), nothrow) void
 alias_nothrow (void);           /* { dg-warning ".alias_nothrow. specifies more restrictive attribute than its target .target_no_nothrow.: .nothrow." } */
 
 
+#pragma GCC diagnostic push "-Wattribute-alias"
+#pragma GCC diagnostic ignored "-Wattribute-alias"
+ATTR (alias ("target_no_nothrow"), nothrow) void
+alias_nothrow_ignored (void);
+#pragma GCC diagnostic pop "-Wattribute-alias"
+
+
 ATTR (pure) int
 alias_pure (void);