Hi,
This is a rebased patch on trunk for PR78736. The last time, it got
stuck, because of warning issues with libgfortran, for which I filed
PR91593. The patch relegates the warning to Wextra instead, which only
triggers (non-fatal) warnings in libgfortran/io/transfer.c, and
survives bootstrap+test on x86_64-unknown-linux-gnu. (Also IIRC, Wall
triggered several instances of the warning with allmodconfig kernel
build last time).
Is the patch OK to commit ?

Thanks,
Prathamesh