Bug#1113774: Disabling -fcf-protection in sudo for bookworm

[Helmut Grohne <helmut@subdivi.de>]

Hi Marc,

On Thu, Sep 25, 2025 at 01:56:21PM +0200, Marc Haber wrote:
> I reaffirm that. Should the TC decline to give formal advice (which I would
> be fine with), I would go ahead to disable -fcf-protection for i386 builds
> (and verify that the amd64 and arm64 binary stay identical) and build
> packages for trixie and bookworm, submit both of them for the next point
> release.

Please bear in mind that these flags are architecture-specific. The
arm64 compiler does not understand -fcf-protection at all (and this is a
recurring problem for cross builds when people mix build/host compiler
flags with host/build compilers). For arm64 you should be seeing
-mbranch-protection=standard since trixie. Likewise, an amd64 compiler
will fail on encountering -mbranch-protection=standard.

Helmut