[CP] Fix dll udf attribute invalid memory bug

cc0f8858 · stdliu · linzhigang.lzg · 7c054a95 · cc0f8858
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src/sql/engine/expr/ob_expr_dll_udf.cpp src/sql/engine/expr/ob_expr_dll_udf.cpp +4 -1

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--- a/src/sql/engine/expr/ob_expr_dll_udf.cpp
+++ b/src/sql/engine/expr/ob_expr_dll_udf.cpp
@@ -173,7 +173,10 @@ int ObExprDllUdf::init_udf(const common::ObIArray<ObRawExpr*>& param_exprs)
      }
    }
    if (OB_SUCC(ret)) {
-      if (OB_FAIL(udf_attributes_.push_back(expr->get_expr_name()))) {
+      ObString str;
+      if (OB_FAIL(ob_write_string(allocator_, expr->get_expr_name(), str))) {
+        LOG_WARN("copy string failed", K(ret));
+      } else if (OB_FAIL(udf_attributes_.push_back(str))) {
        LOG_WARN("failed to push back", K(ret));
      } else if (OB_FAIL(udf_attributes_types_.push_back(expr->get_result_type()))) {
        LOG_WARN("failed to push back", K(ret));