Bug 16954 - Improve TLS variables glibc compatibility
Summary: Improve TLS variables glibc compatibility
Status: NEW
Alias: None
Product: gdb
Classification: Unclassified
Component: threads (show other bugs)
Version: HEAD
: P2 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-05-16 19:20 UTC by Jan Kratochvil
Modified: 2014-05-16 19:22 UTC (History)
1 user (show)

See Also:
Host:
Target: *-linux-gnu
Build:
Last reconfirmed:

Attachments
GDB patch - it works but it is not acceptable as is. (321 bytes, patch)
2014-05-16 19:22 UTC, Jan Kratochvil 		Details | Diff
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Description Jan Kratochvil 2014-05-16 19:20:49 UTC 
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
Comment 1 Jan Kratochvil 2014-05-16 19:22:34 UTC 
Created attachment 7605 [details]
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