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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/28129] New: Unnecessary check DT_DEBUG in ld.so
Date: Sat, 24 Jul 2021 14:24:24 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28129

            Bug ID: 28129
           Summary: Unnecessary check DT_DEBUG in ld.so
           Product: glibc
           Version: 2.34
            Status: NEW
          Severity: normal
          Priority: P2
         Component: dynamic-link
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

rtld.c has

 /* Fill in the pointer in the dynamic linker's own dynamic section, in
     case you run gdb on the dynamic linker directly.  */
  if (GL(dl_rtld_map).l_info[DT_DEBUG] !=3D NULL)
    GL(dl_rtld_map).l_info[DT_DEBUG]->d_un.d_ptr =3D (ElfW(Addr)) r;

But linker never generates DT_DEBUG in shared libraries.  It should be remo=
ved
or linker should add a new option to generate DT_DEBUG in shared libraries.

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