If you provided some relative path to the shared library, such as with
export LD_LIBRARY_PATH=.
then gdb would fail to match the shared library name during the TLS lookup.
Dropped the workaround/fix for gdb-6.8.50.20081128 - is it still needed?
The testsuite needs `gdb-6.3-bz146810-solib_absolute_prefix_is_empty.patch'.
The testsuite needs `gdb-6.5-tls-of-separate-debuginfo.patch'.
2006-09-01 Jan Kratochvil <jan.kratochvil@redhat.com>
* solib-svr4.c (svr4_fetch_objfile_link_map): Match even absolute
requested pathnames to the internal loaded relative pathnames.
2007-10-16 Jan Kratochvil <jan.kratochvil@redhat.com>
Port to GDB-6.7.
2008-02-27 Jan Kratochvil <jan.kratochvil@redhat.com>
Port to gdb-6.7.50.20080227.
Index: gdb-6.7.50.20080227/gdb/testsuite/gdb.threads/tls-sepdebug-main.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ gdb-6.7.50.20080227/gdb/testsuite/gdb.threads/tls-sepdebug-main.c 2008-02-27 09:00:15.000000000 +0100
@@ -0,0 +1,25 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2006 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ Please email any bugs, comments, and/or additions to this file to:
+ bug-gdb@prep.ai.mit.edu */
+
+int main()
+{
+ return 0;
+}
Index: gdb-6.7.50.20080227/gdb/testsuite/gdb.threads/tls-sepdebug-shared.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ gdb-6.7.50.20080227/gdb/testsuite/gdb.threads/tls-sepdebug-shared.c 2008-02-27 09:00:15.000000000 +0100
@@ -0,0 +1,22 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2006 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ Please email any bugs, comments, and/or additions to this file to:
+ bug-gdb@prep.ai.mit.edu */
+
+__thread int var = 42;
--- /dev/null 2009-02-10 00:19:00.494289687 +0100
+++ gdb-6.8.50.20090209-x/gdb/testsuite/gdb.threads/tls-sepdebug.exp 2009-02-10 00:49:38.000000000 +0100
@@ -0,0 +1,86 @@
+# Copyright 2006 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+if $tracelevel then {
+ strace $tracelevel
+}
+
+set testfile tls-sepdebug
+set srcmainfile ${testfile}-main.c
+set srcsharedfile ${testfile}-shared.c
+
+set binmainfile ${objdir}/${subdir}/${testfile}-main
+set binsharedbase ${testfile}-shared.so
+set binsharedfile ${objdir}/${subdir}/${binsharedbase}
+set binshareddebugfile ${objdir}/${subdir}/${binsharedbase}.debug
+
+# Use explicit -soname as otherwise the full path to the library would get
+# encoded into ${binmainfile} making LD_LIBRARY_PATH tests useless.
+
+# FIXME: gcc dependency (-Wl,-soname).
+
+if { [gdb_compile_shlib "${srcdir}/${subdir}/${srcsharedfile}" "${binsharedfile}" [list debug additional_flags=-Wl,-soname=${binsharedbase}]] != "" } {
+ untested "Couldn't compile test library"
+ return -1
+}
+
+# eu-strip(1) works fine but it is a part of `elfutils', not `binutils'.
+if 0 then {
+ remote_exec build "eu-strip -f ${binshareddebugfile} ${binsharedfile}"
+} else {
+ remote_exec build "objcopy --only-keep-debug ${binsharedfile} ${binshareddebugfile}"
+ remote_exec build "objcopy --strip-debug ${binsharedfile}"
+ remote_exec build "objcopy --add-gnu-debuglink=${binshareddebugfile} ${binsharedfile}"
+}
+
+# Do not use `shlib=' as it will automatically add also -rpath for gcc.
+
+if { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcmainfile} ${binsharedfile}" "${binmainfile}" executable {debug}] != "" } {
+ untested "Couldn't compile test program"
+ return -1
+}
+
+# Get things started.
+
+# Test also the proper resolving of relative library names to absolute ones.
+# \$PWD is easy - it is the absolute way
+# ${subdir} would fail on "print var"
+
+foreach ld_library_path [list [pwd]/${subdir} ./${subdir}] name { absolute relative } {
+
+ gdb_exit
+ gdb_start
+ ###gdb_reinitialize_dir $srcdir/$subdir
+
+ gdb_test "set env LD_LIBRARY_PATH=$ld_library_path" \
+ "" \
+ "set env LD_LIBRARY_PATH is $name"
+
+ gdb_load ${binmainfile}
+
+ # For C programs, "start" should stop in main().
+
+ gdb_test "start" \
+ "main \\(\\) at .*${srcmainfile}.*" \
+ "start"
+
+ # Check for: Cannot find shared library `/usr/lib/debug/lib/libc-2.4.90.so.debug' in dynamic linker's load module list
+ # as happens with TLS variables and `separate_debug_objfile_backlink'.
+
+ gdb_test "print var" \
+ "\\\$1 = \[0-9\].*" \
+ "print TLS variable from a shared library with $name-directory separate debug info file"
+}