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0e1f616
(Get the code!)
When testing this, I've noticed a major problem with Ada, supposedly on the trunk as well when using latest binutils.
The problem is that gnat_init_gcc_eh which can change flag_exceptions is called way too late, not from lang_hooks.init, but far after it. This means by the time dwarf2out_init is called flag_exceptions might be still 0 and thus .cfi_sections .dwarf_frame is emitted. But then gnat_init_gcc_eh changes flag_exception to 1 and excepts .eh_frame to be generated.
The reason I've put .cfi_sections directive addition to dwarf2out.c is to allow the user to override it within inline assembly, so I don't want to emit it at the end of the file.