From cb62ab800e593cab3c24bc4732bb23453c79e439 Mon Sep 17 00:00:00 2001
From: vms <michail.vms@gmail.com>
Date: Thu, 28 Jan 2021 00:13:52 +0300
Subject: [PATCH] fix sqlite3_bind_blob

---
 src/vdbeapi.c | 16 ++++++++++++----
 src/wrapper.c |  1 -
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/vdbeapi.c b/src/vdbeapi.c
index 7b7e5b0..9ea0fe8 100644
--- a/src/vdbeapi.c
+++ b/src/vdbeapi.c
@@ -1442,14 +1442,22 @@ static int bindText(
 int sqlite3_bind_blob_(
   sqlite3_stmt *pStmt,
   int i,
-  const void *zData,
+  char *zData,
   int nData,
   void (*xDel)(void*)
 ) __EXPORT_NAME(sqlite3_bind_blob) {
-  char *copied_zData = malloc(nData);
-  memcpy(copied_zData, zData, nData);
+  const int copied_nData = nData / 8;
+  char *copied_zData = malloc(copied_nData);
 
-  const int result = sqlite3_bind_blob(pStmt, i, copied_zData, nData, xDel);
+  if (copied_zData == 0) {
+    return -1;
+  }
+
+  for (int char_id = 0; char_id < copied_nData; ++char_id) {
+    copied_zData[char_id] = zData[char_id * 8];
+  }
+
+  const int result = sqlite3_bind_blob(pStmt, i, copied_zData, copied_nData, 0);
 
   return result;
 }
diff --git a/src/wrapper.c b/src/wrapper.c
index cc38a47..56a9f67 100644
--- a/src/wrapper.c
+++ b/src/wrapper.c
@@ -28,4 +28,3 @@ int get_result_size(void) {
 const char *get_result_ptr() {
   return RESULT_PTR;
 }
-