8a4ac37ef4
null ptr check to prevent gdbserver from crashing Evaluating a thread local storage variable in a remote scenario crashes gdbserver if libthread-db could not be loaded. 2013-02-12 Sanimir Agovic <sanimir.agovic@intel.com> gdbserver/ * thread-db.c (thread_db_get_tls_address): NULL pointer check thread_db. testsuite/ * gdb.server/no-thread-db.exp: New file. * gdb.server/no-thread-db.c: New file. * gdb.server/Makefile.in (EXECUTABLES): Add no-thread-db.
56 lines
2 KiB
Text
56 lines
2 KiB
Text
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2012-2013 Free Software Foundation, Inc.
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#
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# Contributed by Intel Corporation.
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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 3 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, see <http://www.gnu.org/licenses/>.
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# Test gdbserver to handle qGetTLSAddr requests gracefully in case
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# libthread_db could not be loaded.
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load_lib gdbserver-support.exp
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standard_testfile
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set unresolvable_thread_db_path "/foo/bar"
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if {[skip_gdbserver_tests]} {
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return 0
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}
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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return -1
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}
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clean_restart ${testfile}
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# Make sure we're disconnected, in case we're testing with an
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# extended-remote board, therefore already connected.
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gdb_test "disconnect" ".*"
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gdbserver_run ""
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# Force gdbserver to fail to load libthread_db.
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gdb_test "monitor set libthread-db-search-path ${unresolvable_thread_db_path}" \
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"libthread-db-search-path set to `${unresolvable_thread_db_path}'" \
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"libthread-db is now unresolvable"
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# Continue past tls assignment to make sure tls storage is allocated.
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gdb_breakpoint [gdb_get_line_number "after tls assignment"]
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gdb_continue_to_breakpoint "after tls assignment"
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# Printing a tls variable should fail gracefully without a libthread_db.
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gdb_test "print foo" \
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"Cannot find thread-local storage for Thread \[^,\]+, executable file ${binfile}:\[\r\n\]+Remote target failed to process qGetTLSAddr request" \
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"print foo"
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