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Subject: [Bug macros/27754] Excessive CPU load and memory usage with -g3
 debug info
Date: Thu, 23 Dec 2021 16:36:26 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27754

--- Comment #21 from Hannes Domani <ssbssa at sourceware dot org> ---
It looks like for LTO builds the .debug_macro section is missing:

    $ gcc -g3 -flto -ogdb-28589-g3-lto.exe gdb-28589.c
    $ objdump --section=3D.debug_macro --headers gdb-28589-g3-lto.exe

    gdb-28589-g3-lto.exe:     file format pei-x86-64

    Sections:
    Idx Name          Size      VMA               LMA               File of=
f=20
Algn
    objdump: section '.debug_macro' mentioned in a -j option, but not found=
 in
any input file

It's there without -flto:

    $ gcc -g3 -ogdb-28589-g3.exe gdb-28589.c
    $ objdump --section=3D.debug_macro --headers gdb-28589-g3.exe

    gdb-28589-g3.exe:     file format pei-x86-64

    Sections:
    Idx Name          Size      VMA               LMA               File of=
f=20
Algn
     18 .debug_macro  0000687f  0000000140046000  0000000140046000  0003ba0=
0=20
2**0
                      CONTENTS, READONLY, DEBUGGING

--=20
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