mangle.c (mangle_decl): Only emit -Wc++1z-compat warnings for public or external symbols.

	* mangle.c (mangle_decl): Only emit -Wc++1z-compat warnings for
	public or external symbols.

	* g++.dg/cpp1z/noexcept-type14.C: New test.
	* g++.dg/asan/asan_test.C: Remove -Wno-c++1z-compat from dg-options.

From-SVN: r242042

gcc/cp/ChangeLog

+2016-11-10  Jakub Jelinek  <jakub@redhat.com>
+
+	* mangle.c (mangle_decl): Only emit -Wc++1z-compat warnings for
+	public or external symbols.
+
 2016-11-09  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/78283

gcc/cp/mangle.c

@@ -3836,7 +3836,8 @@ mangle_decl (const tree decl)
     }
   SET_DECL_ASSEMBLER_NAME (decl, id);
 
-  if (G.need_cxx1z_warning)
+  if (G.need_cxx1z_warning
+      && (TREE_PUBLIC (decl) || DECL_REALLY_EXTERN (decl)))
     warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wc__1z_compat,
 		"mangled name for %qD will change in C++17 because the "
 		"exception specification is part of a function type",

gcc/testsuite/ChangeLog

+2016-11-10  Jakub Jelinek  <jakub@redhat.com>
+
+	* g++.dg/cpp1z/noexcept-type14.C: New test.
+	* g++.dg/asan/asan_test.C: Remove -Wno-c++1z-compat from dg-options.
+
 2016-11-10  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* gcc.dg/torture/fp-int-convert.h (M_OK2): New, use it in

gcc/testsuite/g++.dg/asan/asan_test.C

@@ -2,7 +2,7 @@
 // { dg-skip-if "" { *-*-* } { "*" } { "-O2" } }
 // { dg-skip-if "" { *-*-* } { "-flto" } { "" } }
 // { dg-additional-sources "asan_globals_test-wrapper.cc" }
-// { dg-options "-std=c++11 -fsanitize=address -fno-builtin -Wall -Wno-c++1z-compat -Werror -g -DASAN_UAR=0 -DASAN_HAS_EXCEPTIONS=1 -DASAN_HAS_BLACKLIST=0 -DSANITIZER_USE_DEJAGNU_GTEST=1 -lasan -lpthread -ldl" }
+// { dg-options "-std=c++11 -fsanitize=address -fno-builtin -Wall -Werror -g -DASAN_UAR=0 -DASAN_HAS_EXCEPTIONS=1 -DASAN_HAS_BLACKLIST=0 -DSANITIZER_USE_DEJAGNU_GTEST=1 -lasan -lpthread -ldl" }
 // { dg-additional-options "-DASAN_NEEDS_SEGV=1" { target { ! arm*-*-* } } }
 // { dg-additional-options "-DASAN_LOW_MEMORY=1 -DASAN_NEEDS_SEGV=0" { target arm*-*-* } }
 // { dg-additional-options "-DASAN_AVOID_EXPENSIVE_TESTS=1" { target { ! run_expensive_tests } } }

gcc/testsuite/g++.dg/cpp1z/noexcept-type14.C

+// { dg-do compile { target c++11 } }
+// { dg-options "-Wall" }
+
+#define A asm volatile ("" : : : "memory")
+void foo () throw () {}
+extern void f1 (decltype (foo) *);	// { dg-bogus "mangled name" }
+void f2 (decltype (foo) *);		// { dg-bogus "mangled name" }
+extern void f3 (decltype (foo) *);	// { dg-warning "mangled name" "" { target c++14_down } }
+void f4 (decltype (foo) *);		// { dg-warning "mangled name" "" { target c++14_down } }
+void f5 (decltype (foo) *) { A; }	// { dg-warning "mangled name" "" { target c++14_down } }
+static void f6 (decltype (foo) *) { A; }// { dg-bogus "mangled name" }
+namespace N {
+void f7 (decltype (foo) *) { A; }	// { dg-warning "mangled name" "" { target c++14_down } }
+}
+namespace {
+void f8 (decltype (foo) *) { A; }	// { dg-bogus "mangled name" }
+}
+void bar ()
+{
+  f3 (foo);
+  f4 (foo);
+  f5 (foo);
+  f6 (foo);
+  N::f7 (foo);
+  f8 (foo);
+}