From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 2 Dec 2000 11:16:13 +0000 (+0000)
Subject: (Fread_file_name) [DOS_NT]: Don't crash if homedir is NULL.
X-Git-Tag: emacs-pretest-21.0.93~302
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=417c884a1f07affbcd0bffe693ce354d032a337c;p=emacs.git

(Fread_file_name) [DOS_NT]: Don't crash if homedir is NULL.
---

diff --git a/src/fileio.c b/src/fileio.c
index ce8172df03d..3385da52da0 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -5627,8 +5627,13 @@ provides a file dialog box..")
   /* If dir starts with user's homedir, change that to ~. */
   homedir = (char *) egetenv ("HOME");
 #ifdef DOS_NT
-  homedir = strcpy (alloca (strlen (homedir) + 1), homedir);
-  CORRECT_DIR_SEPS (homedir);
+  /* homedir can be NULL in temacs, since Vprocess_environment is not
+     yet set up.  We shouldn't crash in that case.  */
+  if (homedir != 0)
+    {
+      homedir = strcpy (alloca (strlen (homedir) + 1), homedir);
+      CORRECT_DIR_SEPS (homedir);
+    }
 #endif
   if (homedir != 0
       && STRINGP (dir)