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If you provided some relative path to the shared library, such as with
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	export LD_LIBRARY_PATH=.
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then gdb would fail to match the shared library name during the TLS lookup.
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407ebe9
Dropped the workaround/fix for gdb-6.8.50.20081128 - is it still needed?
407ebe9
407ebe9
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The testsuite needs `gdb-6.3-bz146810-solib_absolute_prefix_is_empty.patch'.
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The testsuite needs `gdb-6.5-tls-of-separate-debuginfo.patch'.
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2006-09-01  Jan Kratochvil  <jan.kratochvil@redhat.com>
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	* solib-svr4.c (svr4_fetch_objfile_link_map): Match even absolute
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	requested pathnames to the internal loaded relative pathnames.
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eb9d945
2007-10-16  Jan Kratochvil  <jan.kratochvil@redhat.com>
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eb9d945
	Port to GDB-6.7.
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25ff8a1
2008-02-27  Jan Kratochvil  <jan.kratochvil@redhat.com>
25ff8a1
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	Port to gdb-6.7.50.20080227.
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Index: gdb-7.10.90.20160211/gdb/testsuite/gdb.threads/tls-sepdebug-main.c
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===================================================================
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--- /dev/null	1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.10.90.20160211/gdb/testsuite/gdb.threads/tls-sepdebug-main.c	2016-02-16 10:16:12.629875073 +0100
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@@ -0,0 +1,25 @@
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+/* This testcase is part of GDB, the GNU debugger.
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+
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+   Copyright 2006 Free Software Foundation, Inc.
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+
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+   This program is free software; you can redistribute it and/or modify
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+   it under the terms of the GNU General Public License as published by
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+   the Free Software Foundation; either version 2 of the License, or
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+   (at your option) any later version.
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+
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+   This program is distributed in the hope that it will be useful,
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+   but WITHOUT ANY WARRANTY; without even the implied warranty of
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+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+   GNU General Public License for more details.
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+ 
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+   You should have received a copy of the GNU General Public License
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+   along with this program; if not, write to the Free Software
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+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+   Please email any bugs, comments, and/or additions to this file to:
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+   bug-gdb@prep.ai.mit.edu  */
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+
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+int main()
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+{
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+  return 0;
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+}
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Index: gdb-7.10.90.20160211/gdb/testsuite/gdb.threads/tls-sepdebug-shared.c
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===================================================================
eb9d945
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.10.90.20160211/gdb/testsuite/gdb.threads/tls-sepdebug-shared.c	2016-02-16 10:16:12.630875080 +0100
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@@ -0,0 +1,22 @@
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+/* This testcase is part of GDB, the GNU debugger.
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+
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+   Copyright 2006 Free Software Foundation, Inc.
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+
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+   This program is free software; you can redistribute it and/or modify
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+   it under the terms of the GNU General Public License as published by
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+   the Free Software Foundation; either version 2 of the License, or
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+   (at your option) any later version.
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+
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+   This program is distributed in the hope that it will be useful,
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+   but WITHOUT ANY WARRANTY; without even the implied warranty of
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+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+   GNU General Public License for more details.
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+ 
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+   You should have received a copy of the GNU General Public License
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+   along with this program; if not, write to the Free Software
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+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+   Please email any bugs, comments, and/or additions to this file to:
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+   bug-gdb@prep.ai.mit.edu  */
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+
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+__thread int var = 42;
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Index: gdb-7.10.90.20160211/gdb/testsuite/gdb.threads/tls-sepdebug.exp
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===================================================================
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--- /dev/null	1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.10.90.20160211/gdb/testsuite/gdb.threads/tls-sepdebug.exp	2016-02-16 10:16:31.241001010 +0100
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@@ -0,0 +1,87 @@
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+# Copyright 2006 Free Software Foundation, Inc.
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+
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+# 
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+# GNU General Public License for more details.
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+# 
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
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+
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+if $tracelevel then {
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+    strace $tracelevel
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+}
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+
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+set testfile tls-sepdebug
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+set srcmainfile   ${testfile}-main.c
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+set srcsharedfile ${testfile}-shared.c
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+
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+set binmainfile        [standard_output_file ${testfile}-main]
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+set binsharedbase      ${testfile}-shared.so
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+set binsharedfile      [standard_output_file ${binsharedbase}]
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+set binshareddebugfile [standard_output_file ${binsharedbase}.debug]
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+
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+# Use explicit -soname as otherwise the full path to the library would get
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+# encoded into ${binmainfile} making LD_LIBRARY_PATH tests useless.
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+
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+# FIXME: gcc dependency (-Wl,-soname).
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+
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+if  { [gdb_compile_shlib "${srcdir}/${subdir}/${srcsharedfile}" "${binsharedfile}" [list debug additional_flags=-Wl,-soname=${binsharedbase}]] != "" } {
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+    untested "Couldn't compile test library"
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+    return -1
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+}
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+
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+# eu-strip(1) works fine but it is a part of `elfutils', not `binutils'.
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+if 0 then {
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+    remote_exec build "eu-strip -f ${binshareddebugfile} ${binsharedfile}"
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+} else {
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+    remote_exec build "objcopy --only-keep-debug ${binsharedfile} ${binshareddebugfile}"
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+    remote_exec build "objcopy --strip-debug ${binsharedfile}"
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+    remote_exec build "objcopy --add-gnu-debuglink=${binshareddebugfile} ${binsharedfile}"
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+}
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+
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+# Do not use `shlib=' as it will automatically add also -rpath for gcc.
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+
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+if  { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcmainfile} ${binsharedfile}" "${binmainfile}" executable {debug}] != "" } {
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+    untested "Couldn't compile test program"
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+    return -1
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+}
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+
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+# Get things started.
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+
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+# Test also the proper resolving of relative library names to absolute ones.
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+# \$PWD is easy - it is the absolute way
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+# ${subdir} would fail on "print var"
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+
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+set absdir [file dirname [standard_output_file ${binsharedbase}]]
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+foreach ld_library_path [list $absdir [relative_filename [pwd] $absdir]] name { absolute relative }  {
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+
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+    gdb_exit
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+    gdb_start
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+    ###gdb_reinitialize_dir $srcdir/$subdir
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+    
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+    gdb_test "set env LD_LIBRARY_PATH=$ld_library_path" \
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+             "" \
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+             "set env LD_LIBRARY_PATH is $name"
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+    
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+    gdb_load ${binmainfile}
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+    
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+    # For C programs, "start" should stop in main().
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+    
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+    gdb_test "start" \
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+             "main \\(\\) at .*${srcmainfile}.*" \
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+             "start"
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+    
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+    # Check for: Cannot find shared library `/usr/lib/debug/lib/libc-2.4.90.so.debug' in dynamic linker's load module list
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+    # as happens with TLS variables and `separate_debug_objfile_backlink'.
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+    
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+    gdb_test "print var" \
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+             "\\\$1 = \[0-9\].*" \
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+             "print TLS variable from a shared library with $name-directory separate debug info file"
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+}