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[Bug gas/29451] gas-2.39 started adding 0-sized DIEs to functions withou

From: cvs-commit at gcc dot gnu.org
Subject: [Bug gas/29451] gas-2.39 started adding 0-sized DIEs to functions without .size
Date: Wed, 10 Aug 2022 08:34:34 +0000


--- Comment #15 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The binutils-2_39-branch branch has been updated by Jan Beulich


commit e8cf73215187b0c08679d726a5cc7c019fa3ea2e
Author: Jan Beulich <jbeulich@suse.com>
Date:   Wed Aug 10 10:34:22 2022 +0200

    gas/Dwarf: properly skip zero-size functions

    PR gas/29451

    While out_debug_abbrev() properly skips such functions, out_debug_info()
    mistakenly didn't. It needs to calculate the high_pc expression ahead of
    time, in order to skip emitting any data for the function if the value
    is zero.

    The one case which would still leave a zero-size entry is when
    symbol_get_obj(symp)->size ends up evaluating to zero. I hope we can
    expect that to not be the case, otherwise we'd need to have a way to
    post-process .debug_info contents between resolving expressions and
    actually writing the data out to the file. Even then it wouldn't be
    entirely obvious in which way to alter the data.

    (cherry picked from commit d7abcbcea5ddd40a3bf28758b62f35933c59f996)

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