libstdc++: Deprecate std::unexpected and handler functions

These functions have been deprecated since C++11, and were removed in
C++17. The proposal P0323 wants to reuse the name std::unexpected for a
class template, so we will need to stop defining the current function
for C++23 anyway.

This marks them as deprecated for C++11 and up, to warn users they won't
continue to be available. It disables them for C++17 and up, unless the
_GLIBCXX_USE_DEPRECATED macro is defined.

The <unwind-cxx.h> header uses std::unexpected_handler in the public
API, but since that type is the same as std::terminate_handler we can
just use that instead, to avoid warnings about it being deprecated.

libstdc++-v3/ChangeLog:

	* doc/xml/manual/evolution.xml: Document deprecations.
	* doc/html/*: Regenerate.
	* libsupc++/exception (unexpected_handler, unexpected)
	(get_unexpected, set_unexpected): Add deprecated attribute.
	Do not define without _GLIBCXX_USE_DEPRECATED for C++17 and up.
	* libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Disable
	deprecated warnings.
	* libsupc++/eh_ptr.cc (std::rethrow_exception): Likewise.
	* libsupc++/eh_terminate.cc: Likewise.
	* libsupc++/eh_throw.cc (__cxa_init_primary_exception):
	Likewise.
	* libsupc++/unwind-cxx.h (struct __cxa_exception): Use
	terminate_handler instead of unexpected_handler.
	(struct __cxa_dependent_exception): Likewise.
	(__unexpected): Likewise.
	* testsuite/18_support/headers/exception/synopsis.cc: Add
	dg-warning for deprecated warning.
	* testsuite/18_support/exception_ptr/60612-unexpected.cc:
	Disable deprecated warnings.
	* testsuite/18_support/set_unexpected.cc: Likewise.
	* testsuite/18_support/unexpected_handler.cc: Likewise.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp0x/lambda/lambda-eh2.C: Add dg-warning for new
	deprecation warnings.
	* g++.dg/cpp0x/noexcept06.C: Likewise.
	* g++.dg/cpp0x/noexcept07.C: Likewise.
	* g++.dg/eh/forced3.C: Likewise.
	* g++.dg/eh/unexpected1.C: Likewise.
	* g++.old-deja/g++.eh/spec1.C: Likewise.
	* g++.old-deja/g++.eh/spec2.C: Likewise.
	* g++.old-deja/g++.eh/spec3.C: Likewise.
	* g++.old-deja/g++.eh/spec4.C: Likewise.
	* g++.old-deja/g++.mike/eh33.C: Likewise.
	* g++.old-deja/g++.mike/eh34.C: Likewise.
	* g++.old-deja/g++.mike/eh50.C: Likewise.
	* g++.old-deja/g++.mike/eh51.C: Likewise.

13 files changed, 13 insertions, 13 deletions

diff --git a/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-eh2.C b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-eh2.C
index 3fb50df..eddd3c9 100644
--- a/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-eh2.C
+++ b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-eh2.C
@@ -7,7 +7,7 @@
 
 int main( void )
 {
-  std::set_unexpected( []{ throw 0; } );
+  std::set_unexpected( []{ throw 0; } ); // { dg-warning "deprecated" }
   try
     {
       []() throw( int ) { throw nullptr; }();	// { dg-warning "deprecated" }
diff --git a/gcc/testsuite/g++.dg/cpp0x/noexcept06.C b/gcc/testsuite/g++.dg/cpp0x/noexcept06.C
index ad9edec..ea15223 100644
--- a/gcc/testsuite/g++.dg/cpp0x/noexcept06.C
+++ b/gcc/testsuite/g++.dg/cpp0x/noexcept06.C
@@ -23,7 +23,7 @@ void f() noexcept
 
 int main()
 {
-  std::set_unexpected (my_unexpected);
+  std::set_unexpected (my_unexpected); // { dg-warning "deprecated" }
   std::set_terminate (my_terminate);
   f();
   return 1;
diff --git a/gcc/testsuite/g++.dg/cpp0x/noexcept07.C b/gcc/testsuite/g++.dg/cpp0x/noexcept07.C
index de16e01..dbcc23e 100644
--- a/gcc/testsuite/g++.dg/cpp0x/noexcept07.C
+++ b/gcc/testsuite/g++.dg/cpp0x/noexcept07.C
@@ -18,7 +18,7 @@ void f() throw()
 
 int main()
 {
-  std::set_unexpected (my_unexpected);
+  std::set_unexpected (my_unexpected); // { dg-warning "deprecated" }
   f();
   return 1;
 }
diff --git a/gcc/testsuite/g++.dg/eh/forced3.C b/gcc/testsuite/g++.dg/eh/forced3.C
index 9e92daf..51cbc8d 100644
--- a/gcc/testsuite/g++.dg/eh/forced3.C
+++ b/gcc/testsuite/g++.dg/eh/forced3.C
@@ -53,7 +53,7 @@ doit () throw()
 
 int main()
 { 
-  std::set_unexpected (handle_unexpected);
+  std::set_unexpected (handle_unexpected); // { dg-warning "deprecated" "" { target c++11 } }
   doit ();
   abort ();
 }
diff --git a/gcc/testsuite/g++.dg/eh/unexpected1.C b/gcc/testsuite/g++.dg/eh/unexpected1.C
index cd5585f..973ebea 100644
--- a/gcc/testsuite/g++.dg/eh/unexpected1.C
+++ b/gcc/testsuite/g++.dg/eh/unexpected1.C
@@ -30,7 +30,7 @@ doit () throw (Two)			// { dg-warning "deprecated" "" { target { c++11 } } }
 
 int main ()
 {
-  std::set_unexpected (handle_unexpected);
+  std::set_unexpected (handle_unexpected); // { dg-warning "deprecated" "" { target { c++11 } } }
 
   try
   {
diff --git a/gcc/testsuite/g++.old-deja/g++.eh/spec1.C b/gcc/testsuite/g++.old-deja/g++.eh/spec1.C
index ea32045..3c832fd 100644
--- a/gcc/testsuite/g++.old-deja/g++.eh/spec1.C
+++ b/gcc/testsuite/g++.old-deja/g++.eh/spec1.C
@@ -17,7 +17,7 @@ f () throw (char, int, std::bad_exception)	// { dg-warning "deprecated" "" { tar
 int main ()
 {
   std::set_terminate (my_term);
-  std::set_unexpected (my_unexp);
+  std::set_unexpected (my_unexp); // { dg-warning "deprecated" "" { target c++11 } }
 
   try
     {
diff --git a/gcc/testsuite/g++.old-deja/g++.eh/spec2.C b/gcc/testsuite/g++.old-deja/g++.eh/spec2.C
index d1aa698..2f7556b 100644
--- a/gcc/testsuite/g++.old-deja/g++.eh/spec2.C
+++ b/gcc/testsuite/g++.old-deja/g++.eh/spec2.C
@@ -17,7 +17,7 @@ f () throw (int, std::bad_exception)	// { dg-warning "deprecated" "" { target c+
 int main ()
 {
   std::set_terminate (my_term);
-  std::set_unexpected (my_unexp);
+  std::set_unexpected (my_unexp); // { dg-warning "deprecated" "" { target c++11 } }
 
   try
     {
diff --git a/gcc/testsuite/g++.old-deja/g++.eh/spec3.C b/gcc/testsuite/g++.old-deja/g++.eh/spec3.C
index 1d57df3..278de2e 100644
--- a/gcc/testsuite/g++.old-deja/g++.eh/spec3.C
+++ b/gcc/testsuite/g++.old-deja/g++.eh/spec3.C
@@ -17,7 +17,7 @@ f () throw (std::bad_exception)		// { dg-warning "deprecated" "" { target c++11
 int main ()
 {
   std::set_terminate (my_term);
-  std::set_unexpected (my_unexp);
+  std::set_unexpected (my_unexp); // { dg-warning "deprecated" "" { target c++11 } }
 
   try
     {
diff --git a/gcc/testsuite/g++.old-deja/g++.eh/spec4.C b/gcc/testsuite/g++.old-deja/g++.eh/spec4.C
index e102239..d5d4896 100644
--- a/gcc/testsuite/g++.old-deja/g++.eh/spec4.C
+++ b/gcc/testsuite/g++.old-deja/g++.eh/spec4.C
@@ -17,7 +17,7 @@ f () throw (short)		// { dg-warning "deprecated" "" { target c++11 } }
 int main ()
 {
   std::set_terminate (my_term);
-  std::set_unexpected (my_unexp);
+  std::set_unexpected (my_unexp); // { dg-warning "deprecated" "" { target c++11 } }
 
   try
     {
diff --git a/gcc/testsuite/g++.old-deja/g++.mike/eh33.C b/gcc/testsuite/g++.old-deja/g++.mike/eh33.C
index cffb0c4..8d50f73 100644
--- a/gcc/testsuite/g++.old-deja/g++.mike/eh33.C
+++ b/gcc/testsuite/g++.old-deja/g++.mike/eh33.C
@@ -11,7 +11,7 @@ void my_unexpected() {
 void foo() throw (int) { throw "Hi"; }	// { dg-warning "deprecated" "" { target c++11 } }
 
 int main() {
-  std::set_unexpected (my_unexpected);
+  std::set_unexpected (my_unexpected); // { dg-warning "deprecated" "" { target c++11 } }
   try {
     foo();
   } catch (int i) {
diff --git a/gcc/testsuite/g++.old-deja/g++.mike/eh34.C b/gcc/testsuite/g++.old-deja/g++.mike/eh34.C
index 3218dd9..36512ae 100644
--- a/gcc/testsuite/g++.old-deja/g++.mike/eh34.C
+++ b/gcc/testsuite/g++.old-deja/g++.mike/eh34.C
@@ -11,7 +11,7 @@ void my_unexpected() {
 void foo() throw () { throw "Hi"; }
 
 int main() {
-  std::set_unexpected (my_unexpected);
+  std::set_unexpected (my_unexpected); // { dg-warning "deprecated" "" { target c++11 } }
   foo();
   return 1;
 }
diff --git a/gcc/testsuite/g++.old-deja/g++.mike/eh50.C b/gcc/testsuite/g++.old-deja/g++.mike/eh50.C
index 028a2de..2507cf2 100644
--- a/gcc/testsuite/g++.old-deja/g++.mike/eh50.C
+++ b/gcc/testsuite/g++.old-deja/g++.mike/eh50.C
@@ -12,7 +12,7 @@ template <class T> void foo(T) throw (int) { throw "Hi"; }	// { dg-warning "depr
 
 int
 main() {
-  std::set_unexpected (my_unexpected);
+  std::set_unexpected (my_unexpected); // { dg-warning "deprecated" "" { target c++11 } }
   try {
     foo(1);
   } catch (int i) {
diff --git a/gcc/testsuite/g++.old-deja/g++.mike/eh51.C b/gcc/testsuite/g++.old-deja/g++.mike/eh51.C
index 428635b..d1902f0 100644
--- a/gcc/testsuite/g++.old-deja/g++.mike/eh51.C
+++ b/gcc/testsuite/g++.old-deja/g++.mike/eh51.C
@@ -12,7 +12,7 @@ template <class T> void foo(T) throw (T) { throw "Hi"; }	// { dg-warning "deprec
 
 int
 main() {
-  std::set_unexpected (my_unexpected);
+  std::set_unexpected (my_unexpected); // { dg-warning "deprecated" "" { target c++11 } }
   try {
     foo(1);
   } catch (int i) {