From: Richard M. Stallman <rms@gnu.org>
Date: Mon, 16 Aug 2004 22:52:29 +0000 (+0000)
Subject: (move_if_not_intangible): Force POSITION to be between BEGV and ZV.
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(move_if_not_intangible): Force POSITION to be between BEGV and ZV.
---

diff --git a/src/intervals.c b/src/intervals.c
index 33ef9a34177..a822dafefcf 100644
--- a/src/intervals.c
+++ b/src/intervals.c
@@ -2275,6 +2275,10 @@ move_if_not_intangible (position)
 	  pos = Fnext_char_property_change (pos, Qnil);
 
     }
+  else if (position < BEGV)
+    position = BEGV;
+  else if (position > ZV)
+    position = ZV;
 
   /* If the whole stretch between PT and POSITION isn't intangible,
      try moving to POSITION (which means we actually move farther