warn_emptydecl

Controls the recognition of declarations without variables.

Syntax

#pragma warn_emptydecl on | off | reset

Remarks

If you enable this pragma, the compiler displays a warning message when it encounters a declaration with no variables.

Listing 1. Examples of empty declarations in C and C++

#pragma warn_emptydecl on
int ; /* WARNING: empty variable declaration. */
int i; /* OK */
  
long j;; /* WARNING */
long j; /* OK */

Listing 2. Example of empty declaration in C++

#pragma warn_emptydecl on
extern "C" {
}; /* WARNING */

By default, this pragma is disabled.