* child_info: Bump child_info "version".

(child_info): Move some fields from child_info_spawn to here.
* cygheap.cc: Make cygheap pointers NOCOPY.
* dcrt0.cc (dll_crt0_1): Copy cygwin heap here regardless of whether we've been
forked or execed.
* dtable.cc (dtable::fixup_after_fork): Just release close-on-exec fds.
* exceptions.cc (stackdump): Respond to C warning.
* fork.cc: Reorganize to minimize stack copying.
(fork_child): New function.
(fork_parent): Ditto.
(sync_with_child): Don't suspend the forkee.
(sync_with_parent): Ditto.  Make into a function.
* heap.cc (heap_init): Add some debugging output.
* path.cc (path_conv::check): Add an assertion.
(has_suffix): Ditto.
* security.cc (get_pw_sid): Defend against NULL.
* sigproc.cc (proc_subproc): Fix debugging output.
(wait_sig): Ditto.
* strace.cc: Make statics NO_COPY throughout.
(strace::vsprntf): Defend against NULL.

winsup/cygwin/security.cc

@@ -106,7 +106,7 @@ convert_string_sid_to_sid (PSID psid, const char *sid_str)
 BOOL
 get_pw_sid (PSID sid, struct passwd *pw)
 {
-  char *sp = strrchr (pw->pw_gecos, ',');
+  char *sp = pw->pw_gecos ? strrchr (pw->pw_gecos, ',') : NULL;
 
   if (!sp)
     return FALSE;