build bot failure

I got a message from the build bot after checking in a binutils patch,
but I don't see how my patch can relate to the build bot failure.

ld: 0711-380 STABSTRING ERROR: Symbol table entry 534, object file
../bfd/libbfd.a[compress.o]
Length of stabstring in .debug section is invalid.
The stabstring is being deleted.

It looks like the AIX linker is objecting to debug info emitted by
gcc, and I didn't touch either of those things.  I only touched
binutils.  I don't have access to an AIX system, so I am not able to
reproduce the problem and debug it.  I am able to build gdb on an
x86-linux and an aarch64-linux system.  I suspect a problem on the aix
build slave, but don't know how to check that.  I'm not sure what to
do next.

Jim