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_SCL_SECURE_NO_WARNINGS

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Calling any one of the potentially unsafe methods in the Standard C++ Library will result in Compiler Warning (level 3) C4996. To disable this warning, define the macro _SCL_SECURE_NO_WARNINGS in your code:

#define _SCL_SECURE_NO_WARNINGS

Remarks

Other ways to disable warning C4996 include:

  • Using the /D (Preprocessor Definitions) compiler option:

    cl /D_SCL_SECURE_NO_WARNINGS [other compiler options] myfile.cpp

  • Using the /w compiler option:

    cl /wd4996 [other compiler options] myfile.cpp

  • Using the #pragma warning directive:

    #pragma warning(disable:4996)

Also, you can manually change the level of warning C4996 with the /w<l><n> compiler option. For example, to set warning C4996 to level 4:

cl /w44996 [other compiler options] myfile.cpp

For more information, see /w, /Wn, /WX, /Wall, /wln, /wdn, /wen, /won (Warning Level).

See Also

Reference

Safe Libraries: Standard C++ Library