diff --git a/src/eval.c b/src/eval.c
index 38805a57a4..0089752339 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -5298,7 +5298,7 @@ eval7(
 		 * what follows. So set it here. */
 		if (rettv->v_type == VAR_UNKNOWN && !evaluate && **arg == '(')
 		{
-		    rettv->vval.v_string = vim_strsave((char_u *)"");
+		    rettv->vval.v_string = NULL;
 		    rettv->v_type = VAR_FUNC;
 		}
 
@@ -15792,6 +15792,7 @@ find_some_match(typval_T *argvars, typval_T *rettv, int type)
 		listitem_T *li3 = li2->li_next;
 		listitem_T *li4 = li3->li_next;
 
+		vim_free(li1->li_tv.vval.v_string);
 		li1->li_tv.vval.v_string = vim_strnsave(regmatch.startp[0],
 				(int)(regmatch.endp[0] - regmatch.startp[0]));
 		li3->li_tv.vval.v_number =
@@ -25375,7 +25376,12 @@ func_unref(char_u *name)
     {
 	fp = find_func(name);
 	if (fp == NULL)
-	    EMSG2(_(e_intern2), "func_unref()");
+	{
+#ifdef EXITFREE
+	    if (!entered_free_all_mem)
+#endif
+		EMSG2(_(e_intern2), "func_unref()");
+	}
 	else if (--fp->uf_refcount <= 0)
 	{
 	    /* Only delete it when it's not being used.  Otherwise it's done
diff --git a/src/globals.h b/src/globals.h
index 9b1682f1e8..05f33d8104 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -635,6 +635,10 @@ EXTERN int	exiting INIT(= FALSE);
 EXTERN int	really_exiting INIT(= FALSE);
 				/* TRUE when we are sure to exit, e.g., after
 				 * a deadly signal */
+#if defined(EXITFREE)
+EXTERN int	entered_free_all_mem INIT(= FALSE);
+				/* TRUE when in or after free_all_mem() */
+#endif
 /* volatile because it is used in signal handler deathtrap(). */
 EXTERN volatile int full_screen INIT(= FALSE);
 				/* TRUE when doing full-screen output
diff --git a/src/if_mzsch.c b/src/if_mzsch.c
index 93e4b6cbba..1861df49a0 100644
--- a/src/if_mzsch.c
+++ b/src/if_mzsch.c
@@ -545,7 +545,7 @@ static void (*dll_scheme_set_config_path)(Scheme_Object *p);
 
 # if MZSCHEME_VERSION_MAJOR >= 500
 #  if defined(IMPLEMENT_THREAD_LOCAL_VIA_WIN_TLS) || defined(IMPLEMENT_THREAD_LOCAL_EXTERNALLY_VIA_PROC)
-/* define as function for macro in schshread.h */
+/* define as function for macro in schthread.h */
 Thread_Local_Variables *
 scheme_external_get_thread_local_variables(void)
 {
@@ -894,7 +894,7 @@ static void remove_timer(void);
 /* timers are presented in GUI only */
 # if defined(FEAT_GUI_W32)
     static void CALLBACK
-timer_proc(HWND hwnd UNUSED, UINT uMsg UNUSED, UINT idEvent UNUSED, DWORD dwTime UNUSED)
+timer_proc(HWND hwnd UNUSED, UINT uMsg UNUSED, UINT_PTR idEvent UNUSED, DWORD dwTime UNUSED)
 # elif defined(FEAT_GUI_GTK)
 #  if GTK_CHECK_VERSION(3,0,0)
     static gboolean
@@ -3571,7 +3571,7 @@ raise_vim_exn(const char *add_info)
 
 	info = scheme_make_byte_string(add_info);
 	MZ_GC_CHECK();
-	c_string = scheme_format_utf8(fmt, STRLEN(fmt), 1, &info, NULL);
+	c_string = scheme_format_utf8(fmt, (int)STRLEN(fmt), 1, &info, NULL);
 	MZ_GC_CHECK();
 	byte_string = scheme_make_byte_string(c_string);
 	MZ_GC_CHECK();
diff --git a/src/if_perl.xs b/src/if_perl.xs
index aab7ade227..a4899945fe 100644
--- a/src/if_perl.xs
+++ b/src/if_perl.xs
@@ -1075,7 +1075,8 @@ perl_to_vim(SV *sv, typval_T *rettv)
 	{
 	    size_t  len		= 0;
 	    char *  str_from	= SvPV(sv, len);
-	    char_u *str_to	= (char_u*)alloc(sizeof(char_u) * (len + 1));
+	    char_u *str_to	= (char_u*)alloc(
+				      (unsigned)(sizeof(char_u) * (len + 1)));
 
 	    if (str_to) {
 		str_to[len] = '\0';
@@ -1370,13 +1371,13 @@ PerlIOVim_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count)
     char_u *str;
     PerlIOVim * s = PerlIOSelf(f, PerlIOVim);
 
-    str = vim_strnsave((char_u *)vbuf, count);
+    str = vim_strnsave((char_u *)vbuf, (int)count);
     if (str == NULL)
 	return 0;
     msg_split((char_u *)str, s->attr);
     vim_free(str);
 
-    return count;
+    return (SSize_t)count;
 }
 
 static PERLIO_FUNCS_DECL(PerlIO_Vim) = {
diff --git a/src/if_py_both.h b/src/if_py_both.h
index ce8bacd852..50fd687d96 100644
--- a/src/if_py_both.h
+++ b/src/if_py_both.h
@@ -6770,8 +6770,13 @@ populate_module(PyObject *m)
 	return -1;
     ADD_OBJECT(m, "os", other_module);
 
+#if PY_MAJOR_VERSION >= 3
     if (!(py_getcwd = PyObject_GetAttrString(other_module, "getcwd")))
 	return -1;
+#else
+    if (!(py_getcwd = PyObject_GetAttrString(other_module, "getcwdu")))
+	return -1;
+#endif
     ADD_OBJECT(m, "_getcwd", py_getcwd)
 
     if (!(py_chdir = PyObject_GetAttrString(other_module, "chdir")))
diff --git a/src/if_ruby.c b/src/if_ruby.c
index ac4b5f66ef..0b384e834a 100644
--- a/src/if_ruby.c
+++ b/src/if_ruby.c
@@ -741,7 +741,7 @@ vim_str2rb_enc_str(const char *s)
 	vim_free(sval);
 	if (enc)
 	{
-	    return rb_enc_str_new(s, strlen(s), enc);
+	    return rb_enc_str_new(s, (long)strlen(s), enc);
 	}
     }
 #endif
diff --git a/src/misc2.c b/src/misc2.c
index eccb35574d..bc4cd25757 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -1036,13 +1036,12 @@ static void free_findfile(void);
 free_all_mem(void)
 {
     buf_T	*buf, *nextbuf;
-    static int	entered = FALSE;
 
     /* When we cause a crash here it is caught and Vim tries to exit cleanly.
      * Don't try freeing everything again. */
-    if (entered)
+    if (entered_free_all_mem)
 	return;
-    entered = TRUE;
+    entered_free_all_mem = TRUE;
 
 # ifdef FEAT_AUTOCMD
     /* Don't want to trigger autocommands from here on. */
diff --git a/src/version.c b/src/version.c
index 84457b84b9..26c0975681 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,18 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1868,
+/**/
+    1867,
+/**/
+    1866,
+/**/
+    1865,
+/**/
+    1864,
+/**/
+    1863,
 /**/
     1862,
 /**/
@@ -5101,7 +5113,7 @@ do_intro_line(
     if (*mesg == ' ')
     {
 	vim_strncpy(modby, (char_u *)_("Modified by "), MODBY_LEN - 1);
-	l = STRLEN(modby);
+	l = (int)STRLEN(modby);
 	vim_strncpy(modby + l, (char_u *)MODIFIED_BY, MODBY_LEN - l - 1);
 	mesg = modby;
     }