From e4d981b9578d322d529b65aea55964f2249b5953 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Fri, 16 Sep 2005 19:58:12 +0000
Subject: * environ.cc (build_env): Clear envblock and return NULL on attempt
 to use env var > 32K. * spawn.cc (spawn_guts): Set E2BIG if build_env detects
 an error.

---
 winsup/cygwin/spawn.cc | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'winsup/cygwin/spawn.cc')

diff --git a/winsup/cygwin/spawn.cc b/winsup/cygwin/spawn.cc
index ffafa8f7c..149a25999 100644
--- a/winsup/cygwin/spawn.cc
+++ b/winsup/cygwin/spawn.cc
@@ -624,6 +624,11 @@ spawn_guts (const char * prog_arg, const char *const *argv,
   cygheap->user.deimpersonate ();
 
   moreinfo->envp = build_env (envp, envblock, moreinfo->envc, real_path.iscygexec ());
+  if (!moreinfo->envp || !envblock)
+    {
+      set_errno (E2BIG);
+      goto out;
+    }
   ciresrv.set (chtype, real_path.iscygexec ());
   ciresrv.moreinfo = moreinfo;
 
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