Is there a way to disable all warnings with a pragma?

Question

I\'ve started a new project and have decided to make sure it builds cleanly with the /Wall option enabled. The only problem is not all 3rd party libraries (like boost) compi

Answer 1

Using the technique described in the Assaf Lavie's answer it is possible to create helper macros:

#define DISABLE_ALL_WARNINGS_BEGIN \
    __pragma(warning(push, 0))

#define DISABLE_ALL_WARNINGS_END \
    __pragma(warning(pop))

They can be used in the following way (online demo):

DISABLE_ALL_WARNINGS_BEGIN
void foo(int a)
{
    // this function should generate the following warning
    // "warning C4100: 'a': unreferenced formal parameter"
    // unless it is wrapped inside "DISABLE_ALL_WARNINGS" section
}
DISABLE_ALL_WARNINGS_END

Answer 2

What I've done before is set the "W3" option rather than "Wall" then in each of my own source .cpp files I put

#pragma warning(push, 4)

at the top AFTER all the "#include..." lines and then

#pragma warning(pop)

as the very last line of the file.

This way you get level 4 warnings in your code and level 3 in 3rd party code that you can't do anything about.

Answer 3

You can push/pop a low level of warning, like this:

#pragma warning(push, 0)        

#include <boost/bind.hpp>
#include <boost/shared_ptr.hpp>
// ...

#pragma warning(pop)

But know that it's not possible to disable all warnings. For example, some linker warnings are impossible to turn off.

Answer 4

#pragma warning(disable:4820)
#pragma warning(disable:4619)
#pragma warning(disable:4668)

for less lines....

#pragma warning (disable : 4820 4619 4668)