Fix crash in tbl with option `nospaces'.

Reported by Louis Guillaume <louis@zabrico.com>.

* src/libs/libgroff/string.cpp (string::remove_spaces): If input
data consists of spaces only and thus reduces to nothing, set `sz'
to 0.

2 files changed, 11 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 58fe7d6f..29efe4a5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2010-11-11  Werner LEMBERG  <wl@gnu.org>
+
+	Fix crash in tbl with option `nospaces'.
+	Reported by Louis Guillaume <louis@zabrico.com>.
+
+	* src/libs/libgroff/string.cpp (string::remove_spaces): If input
+	data consists of spaces only and thus reduces to nothing, set `sz'
+	to 0.
+
 2010-11-02  Ulrich Spörlein  <uqs@spoerlein.net>
 
 	[mdoc]: Complete previous patch and document OpenBSD releases.
diff --git a/src/libs/libgroff/string.cpp b/src/libs/libgroff/string.cpp
index 7ba24405..81763416 100644
--- a/src/libs/libgroff/string.cpp
+++ b/src/libs/libgroff/string.cpp
@@ -1,5 +1,5 @@
 // -*- C++ -*-
-/* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2002, 2009
+/* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2002, 2009, 2010
    Free Software Foundation, Inc.
      Written by James Clark (jjc@jclark.com)
 
@@ -318,6 +318,7 @@ void string::remove_spaces()
       if (ptr) {
 	a_delete ptr;
 	ptr = 0;
+	sz = 0;
       }
     }
   }