CubeIDE incorrectly flags __attribute__((fallthrough)) as syntax error

[Andrew Neil]

I have

// Prevent a compiler warning on fall-through from one 'case' to another in
// a 'switch' statement
// https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html
#define INTENTIONAL_FALLTHROUGH __attribute__((fallthrough))

But the IDE flags it as a syntax error:

and it's not just the macro:

The usage is correct according to GCC documentation:

https://gcc.gnu.org/onlinedocs/gcc-9.2.0/gcc/Statement-Attributes.html

This is purely in the editor - the actual compiler gives 0 errors and 0 warnings.

IDE v1.13.1 on Win 11.

Seems to be a known Eclipse issue: https://bugs.eclipse.org/bugs/show_bug.cgi?id=567227

[Ghofrane GSOURI]

Hello @Andrew Neil 

Thanks for posting.

Please try to retest this issue using  the latest version of STM32CubeIDE 1.18.1.

I'will be waiting for your feedback.

THX

Ghofrane

[CTapp.1]

I'm seeing the same in 18.1.1:

(Not real code ;) )

Edited to add:

It looks like the parser doesn't like __attribute__ outside of a declaration, as this is "ok":

[Andrew Neil]

---

@CTapp.1 wrote:

I'm seeing the same in 18.1.1:

---

Thanks - that saves me installing 1.18.1 !

(I'm in the middle of a project using 1.13.1, and have no want or reason to change at this point)

---

@CTapp.1 wrote:

It looks like the parser doesn't like __attribute__ outside of a declaration

---

Confirmed that 1.13.1 does the same.

I guess the most usual use of __attribute__ is in declarations/definitions - the parser just doesn't handle this "special case"

[Andrew Neil]

@CTapp.1 spotted a similar issue with static_assert() at file scope:

https://community.st.com/t5/stm32cubeide-mcus/cubeide-incorrectly-flags-syntax-error-on-static-assert-at-file/td-p/802577

[Ghofrane GSOURI]

Hello @Andrew Neil @CTapp.1 

Thank you for bringing this issue to our attention.

A ticket has been escalated to dev team for further investigation.

Internal ticket number:209826

THX

Ghofrane