prepared_statement.c in duckdb-1.1.3.1

- old
+ new

@@ -70,11 +70,12 @@
     obj = allocate(cDuckDBPreparedStatement);
 
     TypedData_Get_Struct(obj, rubyDuckDBPreparedStatement, &prepared_statement_data_type, ctx);
 
     if (duckdb_prepare_extracted_statement(con, extracted_statements, index, &(ctx->prepared_statement)) == DuckDBError) {
-        rb_raise(eDuckDBError, "Failed to create DuckDB::PreparedStatement object.");
+        const char *error = duckdb_prepare_error(ctx->prepared_statement);
+        rb_raise(eDuckDBError, "%s", error ? error : "Failed to create DuckDB::PreparedStatement object.");
     }
     return obj;
 }
 
 static VALUE duckdb_prepared_statement_initialize(VALUE self, VALUE con, VALUE query) {
@@ -88,10 +89,10 @@
     TypedData_Get_Struct(self, rubyDuckDBPreparedStatement, &prepared_statement_data_type, ctx);
     ctxcon = get_struct_connection(con);
 
     if (duckdb_prepare(ctxcon->con, StringValuePtr(query), &(ctx->prepared_statement)) == DuckDBError) {
         const char *error = duckdb_prepare_error(ctx->prepared_statement);
-        rb_raise(eDuckDBError, "%s", error);
+        rb_raise(eDuckDBError, "%s", error ? error : "Failed to prepare statement(Database connection closed?).");
     }
     return self;
 }
 
 static VALUE duckdb_prepared_statement_nparams(VALUE self) {