On 2025-04-15 10:01, Christian Hesse wrote:

> The build succeed as soon as I disable link time optimization. Would be nice
> to have a fix for this to reenable lto.

Thanks for reporting that. It's a false alarm from GCC. I worked around 
the problem by installing the attached patch into Gnulib to pacify GCC, 
and I'm closing the grep bug report.