[Sun C++ 5.3] error compiling braceexp.cpp

CC -c -D_RWSTDDEBUG    -I$(TOPDIR)/include -I$(BUILDDIR)/include -I$(TOPDIR)/tests/include  -library=%none -g  -xarch=v9 +w   $(TOPDIR)/tests/src/braceexp.cpp
"$(TOPDIR)/tests/src/braceexp.cpp", line 316: Error: _rw_brace_graph::_rw_brace_node is not accessible from _rw_brace_graph::_rw_brace_node_buffer.
"$(TOPDIR)/tests/src/braceexp.cpp", line 316: Error: _rw_brace_graph::size is not accessible from _rw_brace_graph::_rw_brace_node_buffer.
"$(TOPDIR)/tests/src/braceexp.cpp", line 350: Error: _rw_brace_graph::_rw_brace_node is not accessible from _rw_brace_graph::_rw_recursion_context.
"$(TOPDIR)/tests/src/braceexp.cpp", line 361: Error: _rw_brace_graph::_rw_brace_node is not accessible from _rw_brace_graph::_rw_recursion_context.
"$(TOPDIR)/tests/src/braceexp.cpp", line 1019: Warning: Conversion of 64 bit type value to "int" causes truncation.
4 Error(s) and 1 Warning(s) detected.
gmake: *** [braceexp.o] Error 4