gh-enable-pexit-hook-function.md

title	description	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
/GH (Enable _pexit hook function)	Describes the /GH compiler option to set a local _pexit hook function.	07/06/2020	_pexit	/Gh compiler option [C++] Gh compiler option [C++] _pexit function -Gh compiler option [C++]	93181453-2676-42e5-bf63-3b19e07299b6

/GH (Enable _pexit hook function)

Calls the _pexit function at the end of every method or function.

Syntax

/GH

Remarks

The _pexit function isn't part of any library. It's up to you to provide a definition for _pexit.

Unless you plan to explicitly call _pexit, you don't need to provide a prototype. The function must push the content of all registers on entry and pop the unchanged content on exit. It must appear as if it had the following prototype:

void __declspec(naked) __cdecl _pexit( void );

This declaration isn't available for 64-bit projects.

_pexit is similar to _penter; see /Gh (Enable _penter Hook Function) for an example of how to write a _penter function.

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
/Gh (Enable _penter hook function)