43368e1d9a
In btrace_pt_readmem_callback, we read memory inside TRY/CATCH and return in case of an error return value. This corrupts the cleanup chain, which eventually results in a SEGV when doing or discarding cleanups later on. gdb/ * btrace.c (btrace_pt_readmem_callback): Do not return in TRY/CATCH. testsuite/ * gdb.btrace/dlopen.exp: New. * gdb.btrace/dlopen.c: New. * gdb.btrace/dlopen-dso.c: New.
52 lines
1.6 KiB
Text
52 lines
1.6 KiB
Text
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2015-2016 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 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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if { [skip_btrace_tests] } { return -1 }
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if { [skip_shlib_tests] } { return -1 }
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standard_testfile
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set basename_lib dlopen-dso
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set srcfile_lib $srcdir/$subdir/$basename_lib.c
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set binfile_lib [standard_output_file $basename_lib.so]
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if { [gdb_compile_shlib $srcfile_lib $binfile_lib \
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[list additional_flags=-fPIC]] != "" } {
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untested "Could not compile $binfile_lib."
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return -1
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}
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if { [prepare_for_testing $testfile.exp $testfile $srcfile \
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[list additional_flags=-DDSO_NAME=\"$binfile_lib\" libs=-ldl]] } {
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return -1
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}
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if ![runto_main] {
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return 0
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}
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# Trace the test function
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#
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gdb_test_no_output "record btrace"
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gdb_test "next"
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# The memory containing the library call we traced is already gone.
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# Trace decode used to run into a SEGV after corrupting the cleanup chain.
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#
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# The test passes if we don't crash GDB.
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#
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gdb_test "info record"
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