1 files changed, 22 insertions, 1 deletions
diff --git a/src/main.c b/src/main.c
index cc1464f13..815583acb 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4255,7 +4255,28 @@ int sqlite3_test_control(int op, ...){
       break;
     }
 
-
+    /*  sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, op, ptr)
+    **
+    **  "ptr" is a pointer to a u32.  
+    **
+    **   op==0       Store the current sqlite3SelectTrace in *ptr
+    **   op==1       Set sqlite3SelectTrace to the value *ptr
+    **   op==3       Store the current sqlite3WhereTrace in *ptr
+    **   op==3       Set sqlite3WhereTrace to the value *ptr
+    */
+    case SQLITE_TESTCTRL_TRACEFLAGS: {
+#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
+       int op = va_arg(ap, int);
+       u32 *ptr = va_arg(ap, u32*);
+       switch( op ){
+         case 0:   *ptr = sqlite3SelectTrace;      break;
+         case 1:   sqlite3SelectTrace = *ptr;      break;
+         case 2:   *ptr = sqlite3WhereTrace;       break;
+         case 3:   sqlite3WhereTrace = *ptr;       break;
+       }
+       break;
+#endif
+    }
   }
   va_end(ap);
 #endif /* SQLITE_UNTESTABLE */