diff --git a/gcc/cp/typeck.cc b/gcc/cp/typeck.cc
index 132c55cfc6d5693428a11a0812399303ebc64ebd..f5a0a2273be25f50b73ed3ec46914ce4ea2b7d7e 100644
--- a/gcc/cp/typeck.cc
+++ b/gcc/cp/typeck.cc
@@ -10837,37 +10837,39 @@ treat_lvalue_as_rvalue_p (tree expr, bool return_p)
parenthesized) id-expression that names an implicitly movable entity
declared in the body or parameter-declaration-clause of the innermost
enclosing function or lambda-expression, */
- if (DECL_CONTEXT (retval) != current_function_decl)
- return NULL_TREE;
if (return_p)
{
+ if (DECL_CONTEXT (retval) != current_function_decl)
+ return NULL_TREE;
expr = move (expr);
if (expr == error_mark_node)
return NULL_TREE;
return set_implicit_rvalue_p (expr);
}
- /* if the operand of a throw-expression is a (possibly parenthesized)
- id-expression that names an implicitly movable entity whose scope does not
- extend beyond the compound-statement of the innermost try-block or
- function-try-block (if any) whose compound-statement or ctor-initializer
- encloses the throw-expression, */
+ /* if the id-expression (possibly parenthesized) is the operand of
+ a throw-expression, and names an implicitly movable entity that belongs
+ to a scope that does not contain the compound-statement of the innermost
+ lambda-expression, try-block, or function-try-block (if any) whose
+ compound-statement or ctor-initializer contains the throw-expression. */
/* C++20 added move on throw of parms. */
if (TREE_CODE (retval) == PARM_DECL && cxx_dialect < cxx20)
return NULL_TREE;
+ /* We don't check for lambda-expression here, because we should not get past
+ the DECL_HAS_VALUE_EXPR_P check above. */
for (cp_binding_level *b = current_binding_level;
- ; b = b->level_chain)
+ b->kind != sk_namespace; b = b->level_chain)
{
for (tree decl = b->names; decl; decl = TREE_CHAIN (decl))
if (decl == retval)
return set_implicit_rvalue_p (move (expr));
- if (b->kind == sk_function_parms
- || b->kind == sk_try
- || b->kind == sk_namespace)
+ if (b->kind == sk_try)
return NULL_TREE;
}
+
+ return set_implicit_rvalue_p (move (expr));
}
/* Warn about dubious usage of std::move (in a return statement, if RETURN_P
diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae69.C b/gcc/testsuite/g++.dg/cpp0x/sfinae69.C
index 361e0b79ba24cfbea774a924f786f20fc56804a6..60eba61165dea687eeef42ec67ec3e0897d82324 100644
--- a/gcc/testsuite/g++.dg/cpp0x/sfinae69.C
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae69.C
@@ -15,7 +15,7 @@ constexpr bool is_throwable(...) { return false; }
constexpr bool b = is_throwable<moveonly>(moveonly{});
#if __cplusplus >= 202002L
-static_assert (b, "move from the function parameter"); // { dg-bogus "" "PR113853" { xfail c++20 } }
+static_assert (b, "move from the function parameter");
#else
static_assert (!b, "no move from the function parameter");
#endif
diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae70.C b/gcc/testsuite/g++.dg/cpp0x/sfinae70.C
new file mode 100644
index 0000000000000000000000000000000000000000..48ea70a61a4269305d981d3461b476562608e530
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae70.C
@@ -0,0 +1,16 @@
+// PR c++/113789
+// { dg-do compile { target c++11 } }
+
+struct AutoPtr {
+ AutoPtr() = default;
+ AutoPtr(AutoPtr&) {}
+};
+
+template<class T> auto f(T p, int) -> decltype(throw p, 1) = delete;
+template<class T> void f(T p, long);
+
+void
+g ()
+{
+ f (AutoPtr (), 42); // { dg-error "use of deleted function" "" { target c++20_down } }
+}
diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae71.C b/gcc/testsuite/g++.dg/cpp0x/sfinae71.C
new file mode 100644
index 0000000000000000000000000000000000000000..2fefe5f70e0097e081610856a0e94631761196e3
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae71.C
@@ -0,0 +1,17 @@
+// PR c++/113789
+// { dg-do compile { target c++11 } }
+// Like sfinae70.C but T&&.
+
+struct AutoPtr {
+ AutoPtr() = default;
+ AutoPtr(AutoPtr&) {}
+};
+
+template<class T> auto f(T&& p, int) -> decltype(throw p, 1) = delete;
+template<class T> void f(T p, long);
+
+void
+g ()
+{
+ f (AutoPtr (), 42); // { dg-error "use of deleted function" "" { target c++20_down } }
+}
diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae72.C b/gcc/testsuite/g++.dg/cpp0x/sfinae72.C
new file mode 100644
index 0000000000000000000000000000000000000000..397cdbd8c23489c2e1e8bc1a3a01607ec946e687
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae72.C
@@ -0,0 +1,17 @@
+// PR c++/113789
+// { dg-do compile { target c++11 } }
+// Like sfinae70.C but ().
+
+struct AutoPtr {
+ AutoPtr() = default;
+ AutoPtr(AutoPtr&) {}
+};
+
+template<class T> auto f(T p, int) -> decltype(throw (p), 1) = delete;
+template<class T> void f(T p, long);
+
+void
+g ()
+{
+ f (AutoPtr (), 42); // { dg-error "use of deleted function" "" { target c++20_down } }
+}
diff --git a/gcc/testsuite/g++.dg/cpp2a/implicit-move4.C b/gcc/testsuite/g++.dg/cpp2a/implicit-move4.C
new file mode 100644
index 0000000000000000000000000000000000000000..09ac5c93ab92d16aedc7e647c35093e306b8494d
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp2a/implicit-move4.C
@@ -0,0 +1,88 @@
+// PR c++/113853
+// { dg-do compile { target c++20 } }
+
+struct X {
+ X();
+ X(const X&);
+ X(X&&) = delete;
+};
+
+void
+f1 ()
+{
+ try {
+ ;
+ } catch (X x) {
+ throw x; // { dg-error "use of deleted function" }
+ }
+}
+
+void
+f2 (X x)
+try {
+ ;
+} catch (...) {
+ throw x; // { dg-error "use of deleted function" }
+}
+
+void
+f2b (X x)
+try {
+ ;
+} catch (...) {
+ {
+ throw x; // { dg-error "use of deleted function" }
+ }
+}
+
+void
+f3 ()
+try {
+ X x;
+ throw x; // { dg-error "use of deleted function" }
+} catch (...) {
+}
+
+void
+f3b ()
+try {
+ {
+ X x;
+ throw x; // { dg-error "use of deleted function" }
+ }
+} catch (...) {
+}
+
+void
+f4 (X x)
+try {
+ throw x;
+} catch (...) {
+}
+
+void
+f4b (X x)
+try {
+ {
+ throw x;
+ }
+} catch (...) {
+}
+
+void
+f5 (X x)
+{
+ void g (decltype(throw x, true)); // { dg-error "use of deleted function|expected" }
+}
+
+// The "expected" shouldn't be here, c++/113924.
+void
+f6 (X x, int = decltype(throw x, true){}) // { dg-error "use of deleted function|expected" }
+{
+}
+
+void
+f7 (X x)
+{
+ [&] { throw x; };
+}