-w

Pragma equivalent

None.

Suppresses warning messages.


>>- -w---------------------------------------------------------><

All informational and warning messages are reported.

Informational and warning messages that supply additional information to a severe error are not disabled by this option.

None.

Consider the file myprogram.C.

//The content of file myprogram.C
#include <stdio.h>
int main()
 { char* greet = "hello world";
   printf("%d \n", greet);
   return 0;
}

If you compile myprogram.C without the -w option, the compiler issues a warning message.

xlC myprogram.C

Output:

"5:18: warning: format specifies type 'int' but the argument has type 'char *' [-Wformat]
printf("%d \n", greet);
~~ ^~~~~
%s
1 warning generated."

If you compile myprogram.C with the -w option, the warning message is suppressed.
```
xlC myprogram.C -w
```