taking an unexpectedly large filename for an AF_UNIX socket from
bind/connect/sendto (thanks to Martin Grabmueller).
* socket.c (scm_sock_fd_to_port, SCM_SOCK_FD_TO_PORT): removed the
former and adjusted the latter.
(scm_socket, scm_socketpair): cosmetic changes.
(scm_getsockopt, scm_setsockopt): declare optlen as int, not
size_t as socklen_t substitute. don't restrict args/return values
to INUM: allow full range of int or size_t.
(scm_fill_sockaddr): check arguments before allocating memory, to
avoid leakage. use malloc, not scm_must_malloc.
(scm_connect, scm_bind, scm_sendto): use int, not size_t as socklen_t
substitute. free the sockaddr structure before throwing an error.
(scm_init_add_buffer): procedure removed, together with its static
buffer scm_addr_buffer, which wouldn't be thread safe. instead,
define a macro MAX_ADDR_SIZE and declare the buffer where needed.
(scm_accept, scm_getpeername, scm_getsockname, scm_recvfrom,
scm_sendto): use a local buffer instead of scm_addr_buffer.
adjust for new SCM_SOCK_FD_TO_PORT. use int for address size,
not size_t.
(scm_recvfrom): set addr->sa_family to AF_UNSPEC before the recvfrom
call to detect whether recvfrom could be bothered to set the address.
(scm_init_socket): don't call scm_init_addr_buffer.
immediate, literal constant should be evaluated.
* eval.c (scm_s_duplicate_formals): New error message string.
(scm_c_improper_memq): New function.
(scm_m_lambda): Check for duplicate arguments.
(scm_ceval, scm_deval): When executing a body: only cons a new
toplevel environment frame when it is different from the
existing one; use EVALCAR instead of SIDEVAL so that we can properly
check for empty combinations; use SCM_EVALIM2 for the same reason
in the non-toplevel loop.
(nontoplevel_cdrxnoap, nontoplevel_cdrxbegin, nontoplevel_begin):
New labels with the meaning of their non-"nontoplevel" partners,
but they are used when it is known that the body is not evaluated at
top-level.
(scm_apply, scm_dapply): use SCM_EVALIM2 to get proper error
reporting for empty combinations.
scm_make_polar): Rename arguments `z1' and `z2' to `x' and `y',
since use of `z' suggests that the arguments may be complex.
* goops.c (scm_make), numbers.c (scm_sys_expt): Fix docstring
typos.
(syntax lambda cond-arrow-proc): Renamed from (lambda cond-arrow-proc).
(syntax reading): New section.
(syntax let*): New section.
(syntax letrec): New section.
(syntax set!): New section.
(syntax misc): New section.
(bindings unbound): New section.
(bindings immutable-modification): New section.
(bindings let): New section.
(bindings let*): New section.
(bindings letrec): New section.
