[Bug gdb/31636] GDB 14 incorrectly reads/handles file timestamps on i686-w64-mingw32 hosts

["tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31636

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |tromey at sourceware dot org

--- Comment #6 from Tom Tromey <tromey at sourceware dot org> ---
I think we didn't anticipate that 'struct stat' itself could
vary between subdirectories like this.

Calling bfd_stat is unavoidable and that symfile.c change was
needed to fix a different bug -- at the very least that code
would fail for remote BFDs.

I wonder if there's a hack we could add to gnulib to avoid
some of its 'stat'-related changes.  Maybe that would be
sufficient.

Otherwise I think the only two solutions here are (1) also
get BFD to use gnulib, and (2) remove gnulib.

(1) is a bit of a pain because gdb has to carefully curate
exactly which gnulib modules are used -- since IIRC there's
at least one that we accidentally used and it broke other
things.

Probably (2) is best for our long-term sanity.  And maybe simpler
now that gdb uses c++ and can perhaps defer a subset of
the portability problems to the standard library.

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