I've an old code that perfectly works in IAR IAR 7.60

I would like to port it to IAR 9.20.4. The only issue while compiling is that I got a __no_operation(); line of code that generates an error while compiling

IAR reports the error as

Error[Li005]: no definition for "__no_operation" [referenced from C:\[...]\EWARM\F041701a_beta000\Obj\Application\User\93c66.o]         

And also got a warning

Warning: implicit declaration of function '__no_operation' is invalid in C99

Is there a way to work around, resolve the issue?

I can't find a solution at the moment.

I'm using an STM32F0

CodePudding user response：

you need to add to your program:

#include "intrinsics.h"

Which defines this inline function.

CodePudding user response：

Using __iar_builtin_no_operation(); instead of __no_operation(); fixed the issue