I checked the build logs and only ppc64el is building dcfldd with -O3.
I modified debian/rules and built dcfldd 1.9.1-1 on amd64 mantic (gcc 13.2.0-3ubuntu1):
``` export DEB_CFLAGS_MAINT_APPEND = -O3 export DEB_CFLAGS_MAINT_STRIP = -O2 ```
The autopkgtest on amd64 succeeded. This indicates that this bug in architecture specific.
I checked the build logs and only ppc64el is building dcfldd with -O3.
I modified debian/rules and built dcfldd 1.9.1-1 on amd64 mantic (gcc 13.2.0-3ubuntu1):
``` MAINT_APPEND = -O3 MAINT_STRIP = -O2
export DEB_CFLAGS_
export DEB_CFLAGS_
```
The autopkgtest on amd64 succeeded. This indicates that this bug in architecture specific.