C compiler: missing diagnostics "a return statement with an expression shall not appear in a functio

[pmor]

Sample code:

extern volatile void x;
void f(void)
{
	return x;
}

Invocation:

$ icc t0.c -std=c11 -pedantic -Wall -Wextra -c

Expected diagnostics:

warning: a return statement with an expression shall not appear in a function whose return type is void

 Actual diagnostics:

t0.c(1): warning #21: type qualifiers are meaningless in this declaration
  extern volatile void x;
                       ^

": internal error: ** The compiler has encountered an unexpected problem.
** Segmentation violation signal raised. **
Access violation or stack overflow. Please contact Intel Support for assistance.

Version:

icc 2021.5.0 on x86-64 on Linux

[pmor]

Also: the editor inserts unwanted:

<p>&nbsp;</p>
<p>&nbsp;</p>

Even if they have been manually removed, then the editor still inserts (it seems on "Save edits" operation) them.
Please fix.

[MadhuK_Intel]

Hi,

Thanks for reaching out to us.

>"Expected diagnostics: warning: a return statement with an expression shall not appear in a function whose return type is void"

Could you please let us know the standard reference based on which you are mentioning expected behavior so that we could consider your error/warning description?

>"Also: the editor inserts unwanted:

<p>&nbsp;</p>

<p>&nbsp;</p>"

Could you please elaborate on the issue, and please provide more information regarding the same so that we could investigate it.

Thanks & Regards,

Madhu.

[pmor]

@MadhuK_Intel 
C11, 6.8.6.4 The return statement, Constraints, 1
> A return statement with an expression shall not appear in a function whose return type is void.

About: "the editor inserts unwanted". After the post has been edited, and saved via "Save edits", the final post contains `<p>&nbsp;</p>`, which were _not_ present in the post. It seems that they have been auto-inserted on "Save edits".

[MadhuK_Intel]

Hi Pavel,

>>"C11, 6.8.6.4 The return statement, Constraints, 1"

We have reported this issue to the concerned development team. They are looking into your issue.

>>"the editor inserts unwanted"

We could not see such an issue now. Please do check and let us know if you still face the issue.

Best Regards,

Madhu

[MadhuK_Intel]

Hi Pavel,

Not sure if you are aware of it, but the Intel C++ Classic compiler will enter "Legacy Product Support" mode signaling the end of regular updates. Please see the below article for more details.

https://www.intel.com/content/www/us/en/developer/articles/technical/adoption-of-llvm-complete-icx.h...

So we suggest you try with the Intel C++ Compiler 2022 (icx) as it is working as expected when we checked it from our end.

Best Regards,

Madhu

[MadhuK_Intel]

Hi,

The version against which you reported your issue is no longer targeted for fixes. Please check out the new versions of Intel oneAPI Toolkits for the latest features. Please post a new question if you need any additional information from Intel, as this thread will no longer be monitored.

Best regards,

Madhu