@@ -203,6 +203,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
std::copy(__x._M_buffer, __x._M_buffer + __x._M_buf_count, _M_buffer);
}
+ // Non-const "copy" modifies the parameter - yuck
sequence_buffer(sequence_buffer& __x)
{
__x.flush();
@@ -213,6 +214,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
sequence_buffer(_Sequence& __s)
: _M_prefix(&__s), _M_buf_count(0) { }
+ // Non-const "copy" modifies the parameter - yuck
sequence_buffer&
operator=(sequence_buffer& __x)
{
@@ -230,7 +232,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
std::copy(__x._M_buffer, __x._M_buffer + __x._M_buf_count, _M_buffer);
return *this;
}
-
+
+#if __cplusplus >= 201103L
+ sequence_buffer(sequence_buffer&& __x) : sequence_buffer(__x) { }
+ sequence_buffer& operator=(sequence_buffer&& __x) { return *this = __x; }
+#endif
+
void
push_back(value_type __x)
{
new file mode 100644
@@ -0,0 +1,27 @@
+// { dg-do run { target c++11 } }
+// PR libstdc++/101542
+#include <ext/rope>
+#include <testsuite_hooks.h>
+
+template<typename T> T f(T x) { return x; }
+template<typename T> T g(T x) { return std::move(x); }
+
+int main()
+{
+ std::string s;
+ {
+ __gnu_cxx::sequence_buffer<std::string> a(s);
+ {
+ __gnu_cxx::sequence_buffer<std::string> b = std::move(a);
+ b.push_back('h');
+ b.push_back('e');
+ b.push_back('l');
+ b.push_back('l');
+ b.push_back('o');
+
+ __gnu_cxx::sequence_buffer<std::string> c;
+ c = f(g((std::move(b))));
+ }
+ }
+ VERIFY( s == "hello" );
+}