* encoding.c (rb_enc_codepoint_len):  Use UNREACHABLE to avoid "control
  reaches end of non-void function" warnings.  [ruby-trunk - Bug #6066]
* re.c (name_to_backref_number):  ditto.
* object.c (rb_Float):  ditto.
* io.c (io_readpartial):  ditto.
* io.c (io_read_nonblock):  ditto.
* pack.c (rb_uv_to_utf8):  ditto.
* proc.c (rb_method_entry_arity):  ditto.
* vm_method.c (rb_f_notimplement):  ditto.
* struct.c (rb_struct_aset_id):  ditto.
* class.c (rb_scan_args):  ditto.
* process.c (rlimit_resource_type):  ditto.
* process.c (rlimit_resource_value):  ditto.
* process.c (p_uid_switch):  ditto.
* process.c (p_gid_switch):  ditto.
* ext/digest/digest.c (rb_digest_instance_update):  ditto.
* ext/digest/digest.c (rb_digest_instance_finish):  ditto.
* ext/digest/digest.c (rb_digest_instance_reset):  ditto.
* ext/digest/digest.c (rb_digest_instance_block_length):  ditto.
* ext/bigdecimal/bigdecimal.c (BigDecimalCmp):  ditto.
* ext/dl/handle.c (rb_dlhandle_close):  ditto.
* ext/tk/tcltklib.c (pending_exception_check0):  ditto.
* ext/tk/tcltklib.c (pending_exception_check1):  ditto.
* ext/tk/tcltklib.c (ip_cancel_eval_core):  ditto.
* ext/tk/tcltklib.c (lib_get_reltype_name):  ditto.
* ext/tk/tcltklib.c (create_dummy_encoding_for_tk_core):  ditto.
* ext/tk/tkutil/tkutil.c (tk_hash_kv):  ditto.
* ext/openssl/ossl_ssl.c (ossl_ssl_session_reused):  ditto.
* ext/openssl/ossl_pkey_ec.c (ossl_ec_key_dsa_verify_asn1):  ditto.
* ext/openssl/ossl_pkey_ec.c (ossl_ec_point_is_at_infinit):  ditto.
* ext/openssl/ossl_pkey_ec.c (ossl_ec_point_is_on_curve):  ditto.
* ext/fiddle/conversions.c (generic_to_value):  ditto.
* ext/socket/raddrinfo.c (rsock_io_socket_addrinfo):  ditto.
* ext/socket/socket.c (sock_s_getnameinfo):  ditto.
* ext/ripper/eventids2.c (ripper_token2eventid):  ditto.
* cont.c (return_fiber):  ditto.
* dmydln.c (dln_load):  ditto.
* vm_insnhelper.c (vm_search_normal_superclass):  ditto.
* bignum.c (big_fdiv):  ditto.
* marshal.c (r_symlink):  ditto.
* marshal.c (r_symbol):  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35321 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* variable.c (trace_ev):  Removed "not reached" comment as this line is
  reached.
* variable.c (rb_obj_remove_instance_variable):  Replaced "not reached"
  comment with the UNREACHABLE macro.
* variable.c (rb_mod_const_missing):  ditto.
* variable.c (rb_mod_remove_cvar):  ditto.
* enum.c (first_i):  ditto.
* string.c (rb_str_aref):  ditto.
* string.c (str_byte_aref):  ditto.
* string.c (rb_to_id):  ditto.
* io.c (rb_io_fmode_modestr):  ditto.
* io.c (rb_io_oflags_modestr):  ditto.
* pack.c (num2i32):  ditto.
* vm_eval.c (rb_method_missing):  ditto.
* vm_eval.c (rb_f_throw):  ditto.
* dir.c (dir_read):  ditto.
* win32/win32.c (child_result):  ditto.
* struct.c (rb_struct_getmember):  ditto.
* struct.c (rb_struct_set):  ditto.
* struct.c (rb_struct_aref_id):  ditto.
* eval.c (rb_f_raise):  ditto.
* process.c (rb_f_exit_bang):  ditto.
* process.c (rb_f_exit):  ditto.
* process.c (rb_f_abort):  ditto.
* ext/-test-/iter/break.c (iter_break_value):  ditto.
* ext/pty/pty.c (pty_check):  ditto.
* ext/openssl/ossl_pkey.c (ossl_pkey_new):  ditto.
* ext/readline/readline.c (rb_remove_history):  ditto.
* ext/stringio/stringio.c (strio_unimpl):  ditto.
* numeric.c (num_sadded):  ditto.
* numeric.c (num_init_copy):  ditto.
* numeric.c (rb_num2ll):  ditto.
* numeric.c (rb_num2ull):  ditto.
* vm_insnhelper.c (call_cfunc):  ditto.
* ruby.c (opt_W_getter):  ditto.
* bignum.c (rb_big_coerce):  ditto.
* file.c (rb_f_test):  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35322 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/webrick/server.rb (WEBrick::GenericServer#start):
  partially revert r35315.

* test/webrick/test_server.rb (test_start_exception):
  received signal is delivered to the main thread, so it is needed to
  emulate it. patched by Eric Hodel. [ruby-core:44348] [Feature #6236]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35323 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* configure.in (UNREACHABLE): gcc 4.4 eliminates unreachable code
  if -O3 is given.
* win32/win32.c (child_result): dropped colon.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35324 b2dd03c8-39d4-4d8f-98ff-823fe69b080e