On Mon, Mar 10, 2025 at 10:42 PM Kees Cook <kees@xxxxxxxxxx> wrote: > > GCC has expanded support of the "nonstring" attribute so that it can be > applied to arrays of character arrays[1], which is needed to identify > correct static initialization of those kinds of objects. Since this was > not supported prior to GCC 15, we need to distinguish the usage of Linux's > existing __nonstring macro for the attribute for non-multi-dimensional > char arrays. Until GCC 15 is the minimum version, use __nonstring_array to > mark arrays of non-string character arrays. (Regular non-string character > arrays can continue to use __nonstring.) Sounds reasonable. So this means that, when the GCC minimum goes over 15 in some years, we can both remove it and move it to `compiler_attributes.h`, right? Perhaps we should mention part of this commit message (or the sentence above) in the comment to clarify (it will also help to clarify what that "only supported since GCC >= 15" means). If you are going to use it in a series that has a use case: Acked-by: Miguel Ojeda <ojeda@xxxxxxxxxx> Thanks! Cheers, Miguel
