commit c295b834a2554b3f7eb792f1bc6d445e206fa55d
author Paul Bakker <p.j.bakker@polarssl.org> Tue Apr 02 11:13:39 2013 +0200
committer Paul Bakker <p.j.bakker@polarssl.org> Tue Apr 02 11:13:39 2013 +0200
tree cdfc6be865447b3bf720b4f2c66cd51927528698
parent 3b6a07b74537a85e74e9f3fc5eaf2392513a936f

Minor checks to prevent NULL-pointer exceptions

include/polarssl/md.h

diff --git a/include/polarssl/md.h b/include/polarssl/md.h
index b81ebf1..d9ab5e7 100644
--- a/include/polarssl/md.h
+++ b/include/polarssl/md.h
@@ -200,6 +200,9 @@
  */
 static inline unsigned char md_get_size( const md_info_t *md_info )
 {
+    if( md_info == NULL )
+        return( 0 );
+
     return md_info->size;
 }
 
@@ -212,6 +215,9 @@
  */
 static inline md_type_t md_get_type( const md_info_t *md_info )
 {
+    if( md_info == NULL )
+        return( POLARSSL_MD_NONE );
+
     return md_info->type;
 }
 
@@ -224,6 +230,9 @@
  */
 static inline const char *md_get_name( const md_info_t *md_info )
 {
+    if( md_info == NULL )
+        return( NULL );
+
     return md_info->name;
 }