From c3906473fdf90eb0953f8d0ea9c0a1f87e44e98b Mon Sep 17 00:00:00 2001
From: Vincent Rischmann
Date: Sun, 26 Dec 2021 18:04:59 +0100
Subject: fix a panic in Statement.prepare if the query is empty

sqlite3_prepare_v2 doesn't return an error code if the input query
string is empty or is a comment, instead the statement will be null.
---
 sqlite.zig | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'sqlite.zig')

diff --git a/sqlite.zig b/sqlite.zig
index a87be5c..29514dd 100644
--- a/sqlite.zig
+++ b/sqlite.zig
@@ -1249,6 +1249,13 @@ pub const DynamicStatement = struct {
                 diags.err = getLastDetailedErrorFromDb(db.db);
                 return errors.errorFromResultCode(result);
             }
+            if (tmp == null) {
+                diags.err = .{
+                    .code = 0,
+                    .message = "the input query is not valid SQL (empty string or a comment)",
+                };
+                return error.SQLiteError;
+            }
             break :blk tmp.?;
         };
         return Self{
-- 
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