expected declaration specifiers or '...' before numeric constant

[DK.7]

Happy New Year everyone!!!

Could you tell me why I get in STM32CubeIDE a warning "expected declaration specifiers or '...' before numeric constant"?

In this line:

__align(4) char variable[16] = ""; // buffer starts on 4-byte boundary

How to fix it?

[waclawek.jan]

Don't use directives (__align()) which are not supported by the compiler you are using.

If you use gcc, read https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#Common-Variable-Attributes

JW

[Piranha]

Better use the CMSIS defined macros:

https://github.com/ARM-software/CMSIS_5/blob/7bb14d86eaa4eff757672705296bf0fe563007e3/CMSIS/Core/Include/cmsis_gcc.h#L110