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/hotpatch (Create Hotpatchable Image)

Prepares an image for hotpatching. For more information on hotpatching, see


When /hotpatch is used in a compilation, the compiler ensures that first instruction of each function is two bytes, which is required for hot patching.

After compiling with /hotpatch, you must link with /FUNCTIONPADMIN (Create Hotpatchable Image), which completes the preparation for making an image hotpatchable. When you compile and link an image with a single invocation of cl.exe, /hotpatch implies /functionpadmin.

When building an image that will run on one of the chips in the Itanium Processor Family (IPF), it is not necessary to use /hotpatch, however you should use /functionpadmin on images built for IPF.

To set this compiler option in the Visual Studio development environment

  1. Open the project's Property Pages dialog box. For details, see How to: Open Project Property Pages.

  2. Click the C/C++ folder.

  3. Click the Command Line property page.

  4. Type the compiler option in the Additional Options box.

To set this compiler option programmatically