more changes

Makefile

@@ -29,7 +29,7 @@ EXPORT_FUNCS = \
 	--export=sqlite3_bind_blob_,$\
 	--export=sqlite3_bind_double,$\
 	--export=sqlite3_bind_int64,$\
-	--export=sqlite3_bind_text_,$\
+	--export=sqlite3_bind_text,$\
 	--export=sqlite3_bind_null,$\
 	--export=sqlite3_column_count,$\
 	--export=sqlite3_column_double,$\

src/legacy.c

@@ -35,15 +35,12 @@ void sqlite3_exec_(
   sqlite3_callback xCallback, /* Invoke this callback routine */
   void *pArg                  /* First argument to xCallback() */
 ) __EXPORT_NAME(sqlite3_exec) {
-  char *new_zSql = (char *) malloc(zSql_len + 1);
-  memcpy(new_zSql, zSql, zSql_len);
-  new_zSql[zSql_len] = 0;
-  free((void *)zSql);
+  zSql[zSql_len] = '\x00';
 
   char *pzErrMsg = 0;
   const int ret_code = sqlite3_exec(db, new_zSql, xCallback, pArg, &pzErrMsg);
 
-  free(new_zSql);
+  free(zSql);
   int *result = malloc(3*8);
   result[0] = ret_code;
   result[1] = 0;
@@ -52,6 +49,7 @@ void sqlite3_exec_(
   result[4] = strlen(pzErrMsg);
   result[5] = 0;
 
+  add_object_to_release((void *) result);
   set_result_ptr((char *)result);
 }
 

src/main.c

@@ -2452,6 +2452,7 @@ int sqlite3TempInMemory(const sqlite3 *db){
 void sqlite3_errmsg_(sqlite3 *db) __EXPORT_NAME(sqlite3_errmsg) {
   const char *result = sqlite3_errmsg(db);
 
+  add_object_to_release((void *) result);
   set_result_ptr((char *)result);
   set_result_size(strlen(result));
 }
@@ -3458,6 +3459,7 @@ void sqlite3_open_v2_(
   result[0] = ret_code;
   result[2] = (int)ppDb;
 
+  add_object_to_release((void *) result);
   set_result_ptr((char *)result);
 }
 

src/vdbeapi.c

@@ -1113,10 +1113,7 @@ void sqlite3_column_blob_(sqlite3_stmt *pStmt, int i) __EXPORT_NAME(sqlite3_colu
    const char *blob = sqlite3_column_blob(pStmt, i);
    int blob_len = sqlite3_column_bytes(pStmt, i);
 
-   unsigned char *copied_result = malloc(blob_len);
-   memcpy(copied_result, blob, blob_len);
-
-   set_result_ptr((char *)copied_result);
+   set_result_ptr((char *)blob);
    set_result_size(blob_len);
 }
 
@@ -1160,10 +1157,7 @@ void sqlite3_column_text_(sqlite3_stmt *pStmt, int i) __EXPORT_NAME(sqlite3_colu
   const unsigned char *text = sqlite3_column_text(pStmt, i);
   const unsigned int text_len = sqlite3_column_bytes(pStmt, i);
 
-  unsigned char *copied_text = malloc(text_len);
-  memcpy(copied_text, text, text_len);
-
-  set_result_ptr((char *)copied_text);
+  set_result_ptr((char *)text);
   set_result_size(text_len);
 }
 
@@ -1262,6 +1256,7 @@ static const void *columnName(
 void sqlite3_column_name_(sqlite3_stmt *pStmt, int N) __EXPORT_NAME(sqlite3_column_name) {
   const char *result = sqlite3_column_name(pStmt, N);
 
+  add_object_to_release((void *) result);
   set_result_ptr((char *)result);
   set_result_size(strlen(result));
 }
@@ -1456,6 +1451,7 @@ int sqlite3_bind_blob_(
   for (int char_id = 0; char_id < copied_nData; ++char_id) {
     copied_zData[char_id] = zData[char_id * 8];
   }
+  free(zData);
 
   const int result = sqlite3_bind_blob(pStmt, i, copied_zData, copied_nData, 0);
 
@@ -1539,21 +1535,6 @@ int sqlite3_bind_pointer(
   return rc;
 }
 
-int sqlite3_bind_text_(
-  sqlite3_stmt *pStmt,
-  int i,
-  const char *zData,
-  int nData,
-  void (*xDel)(void*)
-) __EXPORT_NAME(sqlite3_bind_text) {
-  char *copied_zData = malloc(nData);
-  memcpy(copied_zData, zData, nData);
-
-  const int result = sqlite3_bind_text(pStmt, i, copied_zData, nData, xDel);
-
-  return result;
-}
-
 int sqlite3_bind_text(
   sqlite3_stmt *pStmt, 
   int i, 

src/wrapper.c

@@ -19,7 +19,7 @@ void release_objects() {
   OBJECTS_TO_RELEASE_COUNT = 0;
 }
 
-void add_object_to_release(void *) {
+void add_object_to_release(void *object) {
 
 }