| description | title | ms.date | f1_keywords | helpviewer_keywords | ms.assetid | ||
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Learn more about: Compiler Warning (level 1) C4042 |
Compiler Warning (level 1) C4042 |
11/04/2016 |
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e4bd861b-1194-426b-bf79-68c5b021eb0a |
'identifier' : has bad storage class
The specified storage class cannot be used with this identifier in this context. The compiler uses the default storage class instead:
-
extern, if identifier is a function. -
auto, if identifier is a formal parameter or local variable. -
No storage class, if identifier is a global variable.
This warning can be caused by specifying a storage class other than register in a parameter declaration.
The following sample generates C4042
// C4042.cpp
// compile with: /W1 /LD
int func2( __declspec( thread ) int tls_i ) // C4042
// try the following line instead
// int func2( int tls_i )
{
return tls_i;
}