dup2              255 native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc int KernelProxy::dup2(int oldfd, int newfd) {
dup2               43 native_client_sdk/src/libraries/ppapi_simple/ps_instance.cc #define dup2 _dup2
dup2              409 third_party/talloc/libreplace/replace.h #define dup2 rep_dup2