[Bug threads/16954] New: Improve TLS variables glibc compatibility

[Bug threads/16954] New: Improve TLS variables glibc compatibility

[jan.kratochvil at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16954

            Bug ID: 16954
           Summary: Improve TLS variables glibc compatibility
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: threads
          Assignee: unassigned at sourceware dot org
          Reporter: jan.kratochvil at redhat dot com
            Target: *-linux-gnu

With post-2.19.90 glibcs the GDB patch posted below still works but it is
needlessly incorrect - it depends on assumption glibc assigns module id 1 to
static executables.

GDB fix post for compatibility with pre-2.19.90 glibcs:
  [patch] Fix TLS access for -static -pthread
  https://sourceware.org/ml/gdb-patches/2014-04/msg00155.html

glibc fix in glibc-2.19.90: PR libc/16831
 
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f737dfd071f12584316ef90f2c71e33c2dc9801e

Original post (IMO obsolete now):
  TLS variables access for -static -lpthread executables
  https://sourceware.org/ml/libc-help/2014-03/msg00024.html

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[Bug threads/16954] Improve TLS variables glibc compatibility

[jan.kratochvil at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16954

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jan.kratochvil at redhat dot com

--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Created attachment 7605
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7605&action=edit
GDB patch - it works but it is not acceptable as is.

Functionality gets tested by existing:
  gdb.threads/staticthreads.exp: tlsvar in thread
  gdb.threads/staticthreads.exp: tlsvar in main

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