[HP aCC 6.16] warning #20206-D: Out of bound access in rw_streambuf.h

aCC -c -mt -I/amd/devco/scottz/stdcxx/4.2.x/include -I/build/scottz/12d/include -I/amd/devco/scottz/stdcxx/4.2.x/tests/include -AA +O2 +DD64
+w +W392 +W655 +W684 +W818 +W819 +W849 +W2193 +W2236 +W2261 +W2340 +W2401 +W2487 +W4227 +W4229 +W4231 +W4235 +W4237 +W4249 +W4255 +W4272 +W4284 +W4285 +W4286 /amd/devco/scottz/stdcxx/4.2.x/tests/strings/21.string.io.cpp

"/amd/devco/scottz/stdcxx/4.2.x/tests/include/rw_streambuf.h", line 471, procedure setbuf: warning #20206-D: Out of bound access (In expression "&this->ncalls_[(long long)<compiler temporary>_d]", this->ncalls_ (type: int [11]) has element range [0 .. 10], writing element range [0 .. 31].)
"/amd/devco/scottz/stdcxx/4.2.x/tests/include/rw_streambuf.h", line 473, procedure setbuf: warning #20206-D: Out of bound access (In expression "&this->ncalls_[(long long)<compiler temporary>_d]", this->ncalls_ (type: int [11]) has element range [0 .. 10], reading element range [0 .. 31].)
"/amd/devco/scottz/stdcxx/4.2.x/tests/include/rw_streambuf.h", line 480, procedure setbuf: warning #20206-D: Out of bound access (In expression "&this->throw_when_[(long long)<compiler temporary>_d]", this->throw_when_ (type: int [11]) has element range [0 .. 10], reading element range [0 .. 31].)
"/amd/devco/scottz/stdcxx/4.2.x/tests/include/rw_streambuf.h", line 484, procedure setbuf: warning #20206-D: Out of bound access (In expression "&streambuf_func_names[(long long)<compiler temporary>_d]", array "streambuf_func_names" [/amd/devco/scottz/stdcxx/4.2.x/tests/include/rw_streambuf.h:60] (type: const char* [11]) has element range [0 .. 10], reading element range [0 .. 31].)