[SCM] GNU libtasn1 branch, master, updated. libtasn1_4_2-4-gedaff43

[Nikos Mavrogiannopoulos]

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http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=edaff43f27c3e1bcf8317ecee9f733a995602b72

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- Log -----------------------------------------------------------------
commit edaff43f27c3e1bcf8317ecee9f733a995602b72
Author: Nikos Mavrogiannopoulos <address@hidden>
Date:   Thu Feb 5 10:30:14 2015 +0100

    only assign value if the previous node has one
    
    This addresses the crash in the ASN.1 definitions parser
    reported in 
http://lists.gnu.org/archive/html/help-libtasn1/2015-01/msg00000.html

-----------------------------------------------------------------------

Summary of changes:
 lib/parser_aux.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/lib/parser_aux.c b/lib/parser_aux.c
index 4b15000..d3e9009 100644
--- a/lib/parser_aux.c
+++ b/lib/parser_aux.c
@@ -701,9 +701,12 @@ _asn1_expand_object_id (asn1_node node)
                              p5 =
                                _asn1_add_single_node (ASN1_ETYPE_CONSTANT);
                              _asn1_set_name (p5, p4->name);
-                             tlen = _asn1_strlen (p4->value);
-                             if (tlen > 0)
-                               _asn1_set_value (p5, p4->value, tlen + 1);
+                             if (p4->value)
+                               {
+                                 tlen = _asn1_strlen (p4->value);
+                                 if (tlen > 0)
+                                   _asn1_set_value (p5, p4->value, tlen + 1);
+                               }
                              if (p2 == p)
                                {
                                  _asn1_set_right (p5, p->down);


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