Re: 5.15.x: randomize_layout_plugin.c: 'last_stmt' was not declared in this scope?

[Greg KH <gregkh@linuxfoundation.org>]

On Sun, Jul 14, 2024 at 01:30:16PM +0200, Thomas Meyer wrote:
> Good day,
> 
> I wanted to upgrade my kernel to the latest 5.15.162 but it seems to fail with
> this error message after upgrading to fedora 40, any ideas what could be the
> problem?
> 
> $ make
>   HOSTCXX scripts/gcc-plugins/randomize_layout_plugin.so
> scripts/gcc-plugins/randomize_layout_plugin.c: In function 'bool dominated_by_is_err(const_tree, basic_block)':
> scripts/gcc-plugins/randomize_layout_plugin.c:693:20: error: 'last_stmt' was not declared in this scope; did you mean 'call_stmt'?
>   693 |         dom_stmt = last_stmt(dom);
>       |                    ^~~~~~~~~
>       |                    call_stmt
> make[2]: *** [scripts/gcc-plugins/Makefile:48: scripts/gcc-plugins/randomize_layout_plugin.so] Error 1
> make[1]: *** [scripts/Makefile.build:552: scripts/gcc-plugins] Error 2
> make: *** [Makefile:1246: scripts] Error 2
> 
> Maybe a problem with gcc 14?

Maybe, has any previous 5.15.y kernel worked?

> My current kernel was compiled with gcc 13:
> [    0.000000] [      T0] Linux version 5.15.160 (thomas2@localhost.localdomain) (gcc (GCC) 13.3.1 20240522 (Red Hat 13.3.1-1), GNU ld version 2.40-14.fc39) #15 PREEMPT Sat Jun 1 16:54:27 CEST 2024

If you build 5.15.160 with gcc 14 does it also fail?  Doing a 'git
bisect if it does not would be great to track down the offending commit.

thanks,

greg k-h