Export (0) Print
Expand All
Expand Minimize
This topic has not yet been rated - Rate this topic

Compiler Warning (level 3) C4640

Error Message

'instance' : construction of local static object is not thread-safe

A static instance of an object is not thread safe.

This warning is off by default. See Compiler Warnings That Are Off by Default for more information.

The following sample generates C4640:

// C4640.cpp
// compile with: /W3
#pragma warning(default:4640)

class X {
public:
   X() {
   }
};

void f() {
   static X aX;   // C4640
}

int main() {
   f();
}
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.