STM8 Cosmic: "weak" function

[Arlleex1]

Hello!

The Cosmic compiler supports "weak" functions to override them in the future?

[AvaTar]

Yes.

Not limited to the "Cosmic" compiler, a label defined as "weak" might appear twice in a project.

In other words, the label can appear once, or twice with one occurence defined as "weak". In the latter case, the non-weak definition takes precedence.

This is e.g. used to supply default implementation for interrupt handlers.

[Arlleex1]

Thanks for the answer!

As a matter of fact, I wanted to find the syntax [weak] for STVD / Cosmic for STM8. The CXSTM8 documentation did not find this =(

[AvaTar]

I did a project for a STM8 several years ago, with another toolchain (forgot its name ...).

Not sure who "invented" it, but the "weak" attribute is supported by all gcc-based toolchains for ARM/Cortex M, and AFAIK also the Keil and IAR one's.

The "weak" support includes the assembler and linker as well.

[S.Ma]

weak should be used when there is no other implementable way, because it is like a pandora box. You mayl see it as making your life easier at first...