commit 6e341b93471c790e043b47fe76c056da678a5527
author drh <drh@noemail.net> Tue Apr 17 18:50:40 2018 +0000
committer drh <drh@noemail.net> Tue Apr 17 18:50:40 2018 +0000
tree e1c06e0b069e66bc00f7ab8381d29be6d3528ee6
parent dedbc508113ebfebd7b80c1e82eabb0dde28023f

TK_REGISTER expressions nodes are probably not constant.  Make sure
sqlite3ExprIsConstant() knows this.

FossilOrigin-Name: f3d91cad929cfbee8f621425f55b5f12e79567362cf8769a786adb3e1bbef214

src/expr.c

diff --git a/src/expr.c b/src/expr.c
index 63b79c2..76299ff 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -1825,6 +1825,7 @@
       }
       /* Fall through */
     case TK_IF_NULL_ROW:
+    case TK_REGISTER:
       testcase( pExpr->op==TK_IF_NULL_ROW );
       pWalker->eCode = 0;
       return WRC_Abort;
@@ -1842,8 +1843,8 @@
       }
       /* Fall through */
     default:
-      testcase( pExpr->op==TK_SELECT ); /* sqlite3SelectWalkFail will disallow */
-      testcase( pExpr->op==TK_EXISTS ); /* sqlite3SelectWalkFail will disallow */
+      testcase( pExpr->op==TK_SELECT ); /* sqlite3SelectWalkFail() disallows */
+      testcase( pExpr->op==TK_EXISTS ); /* sqlite3SelectWalkFail() disallows */
       return WRC_Continue;
   }
 }