[Bug nptl/30670] New: libthread_db was not updated for the libpthreads removal

[Bug nptl/30670] New: libthread_db was not updated for the libpthreads removal

[khuey at kylehuey dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=30670

            Bug ID: 30670
           Summary: libthread_db was not updated for the libpthreads
                    removal
           Product: glibc
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: nptl
          Assignee: unassigned at sourceware dot org
          Reporter: khuey at kylehuey dot com
                CC: drepper.fsp at gmail dot com, tromey at sourceware dot org
  Target Milestone: ---

With glibc 2.35 libpthreads.so was merged into libc itself. libthread_db,
however, continues to have hardcoded references to libpthreads.so[0]. The API
in question states that symbol lookups performed by the libthread_db consumer
should be restricted to the provided DSO[1]. gdb, however, does not honor the
DSO parameter[2], which is likely why this has not been noticed.

Any libthread_db consumer attempting to faithfully follow the API contract is
currently broken.

[0]
https://sourceware.org/git/?p=glibc.git;a=blob;f=nptl_db/thread_dbP.h;h=bf9ea27544d0fbd94c8abc1d6bc5821b9286c6a8;hb=HEAD#l155
[1]
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/nptl/proc_service.h;h=05bec74711c474feba772490be3e3f9aacea1d2e;hb=HEAD#l76
[2] Note the comment from the turn of the millennium:
https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gdb/proc-service.c;h=f735eb0ac812d5896c6a5ab846a7f7601447e894;hb=HEAD#l102

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