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Compiler Warning (level 1) C4606

#pragma warning : 'warning_number' ignored; Code Analysis warnings are not associated with warning levels

For Code Analysis warnings, only error, once, and default are supported with the warning pragma.

The following sample generates C4606.

// C4606.cpp
// compile with: /c /W1
#pragma warning(1: 6001)   // C4606
#pragma warning(once: 6001)   // OK