gx-enable-exception-handling.md

description	Learn more about: /GX (Enable Exception Handling)
title	/GX (Enable Exception Handling)
ms.date	11/19/2019
f1_keywords	/gx
helpviewer_keywords	exception handling, enabling /GX compiler option [C++] -GX compiler option [C++] cl.exe compiler, exception handling enable exception handling compiler option [C++] GX compiler option [C++]
ms.assetid	933b43ba-de77-4ff8-a48b-7074de90bc1c

/GX (Enable Exception Handling)

Deprecated. Enables synchronous exception handling using the assumption that functions declared by using extern "C" never throw an exception.

Syntax

/GX

Remarks

/GX is deprecated. Use the equivalent /EHsc option instead. For a list of deprecated compiler options, see the Deprecated and Removed Compiler Options section in Compiler Options Listed by Category.

By default, /EHsc, the equivalent of /GX, is in effect when you compile by using the Visual Studio development environment. When using the command line tools, no exception handling is specified. This is the equivalent of /GX-.

To set this compiler option in the Visual Studio development environment

1. Open the project's Property Pages dialog box. For details, see Set C++ compiler and build properties in Visual Studio.

2. Select the Configuration Properties > C/C++ > Command Line property page.

3. Enter the compiler option in the Additional Options box.

To set this compiler option programmatically

• See xref:Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool.AdditionalOptions%2A.

See also

MSVC Compiler Options
MSVC Compiler Command-Line Syntax
/EH (Exception Handling Model)