* spawn.cc (av::dup_maybe): Make function void rather than void *.

* environ.cc (environ_init): Remember to reparse CYGWIN if envp is
supplied.
* heap.cc (_sbrk): Remember frame for signal handling.
* syscalls.cc (read_handler): Eliminate.
(_read): Move read_handler code here.  Reorganize for one path through
'ready_for_read'.

1 files changed, 11 insertions, 1 deletions

diff --git a/winsup/cygwin/environ.cc b/winsup/cygwin/environ.cc
index 9c7b72ce0..f0a3fc7d7 100644
--- a/winsup/cygwin/environ.cc
+++ b/winsup/cygwin/environ.cc
@@ -524,6 +524,7 @@ environ_init (char **envp)
   char *p;
   char *newp;
   int sawTERM = 0;
+  bool envp_passed_in;
   static char cygterm[] = "TERM=cygwin";
 
   regopt ("default");
@@ -536,13 +537,16 @@ environ_init (char **envp)
     allow_ntsec = TRUE;
 #endif
 
-  if (envp)
+  if (!envp)
+    envp_passed_in = 0;
+  else
     {
       sz = envsize (envp, 1);
       char **newenv = (char **) malloc (sz);
       memcpy (newenv, envp, sz);
       cfree (envp);
       envp = newenv;
+      envp_passed_in = 1;
       goto out;
     }
 
@@ -585,6 +589,12 @@ environ_init (char **envp)
 out:
   __cygwin_environ = envp;
   update_envptrs ();
+  if (envp_passed_in)
+    {
+      p = getenv ("CYGWIN");
+      if (p)
+	parse_options (p);
+    }
   parse_options (NULL);
   MALLOC_CHECK;
 }