astEqual: Check neither object is NULL

Starlink · Oct 3, 2019 · c81720d · c81720d
1 parent 3e64fb0
commit c81720d
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/component.xml b/component.xml
@@ -2,7 +2,7 @@
 <!DOCTYPE component SYSTEM "componentinfo.dtd">
 
 <component id="ast" support="S">
-  <version>8.8.0</version>
+  <version>9.0.0</version>
   <path>libext/ast</path>
   <description>WCS library</description>
   <abstract>

diff --git a/object.c b/object.c
@@ -5875,6 +5875,7 @@ int astManageLock_( AstObject *this, int mode, int extra, AstObject **fail,
 int astEqual_( AstObject *this, AstObject *that, int *status ) {
    if ( !astOK ) return 0;
    if( this == that ) return 1;
+   if( !this || !that ) return 0;
    return (**astMEMBER(this,Object,Equal))( this, that, status );
 }
 const char *astGetAttrib_( AstObject *this, const char *attrib, int *status ) {