gdb/23712: Test case for multidictionary
This is a test derived from one of the reproducers in symtab/23010. The DIE tree used here is typical of compilations with LTO, where an artificial parent DIE of language C99 imports DIEs of other languages. gdb/testsuite/ChangeLog: PR gdb/23712 PR symtab/23010 * gdb.dwarf2/multidictionary.exp: New file.
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2019-01-10 Keith Seitz <keiths@redhat.com>
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PR gdb/23712
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PR symtab/23010
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* gdb.dwarf2/multidictionary.exp: New file.
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2019-01-09 Simon Marchi <simon.marchi@ericsson.com>
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* gdb.cp/demangle.exp (test_gnu_style_demangling): Rename to...
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# Copyright 2019 Free Software Foundation, Inc.
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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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# A test of multi-language dictionaries, a solution to symtab/23010 et al.
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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF.
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if {![dwarf2_support]} {
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return 0
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}
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standard_testfile main.c .S
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# Create the DWARF. This is derived from the reproducer in the bug
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# mentioned above. This DIE tree is typical of compilations wtih
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# LTO enabled.
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set asm_file [standard_output_file $srcfile2]
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Dwarf::assemble $asm_file {
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declare_labels D45d9 D5079 D5080 D50a9 D50af D5ab2 D5ac2 D5ace D5acf
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declare_labels D2135f D2216a D22171 D226c4 D226ca D244ca \
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D245da D245e6
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declare_labels D41c21 D42025 D42045 D42038 D42045 D420b5
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cu {} {
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D45d9: compile_unit {
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{language @DW_LANG_C_plus_plus}
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{name "SerialPortUtils.cpp"}
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} {
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D5079: base_type {
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{byte_size 1 sdata}
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{encoding @DW_ATE_unsigned}
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{name "char"}
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}
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D5080: const_type {
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{type :$D5079}
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}
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D50a9: pointer_type {
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{byte_size 4 sdata}
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{type :$D5080}
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}
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D50af: const_type {
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{type :$D50a9}
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}
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D5ab2: subprogram {
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{external 1 flag}
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{linkage_name "_Z18SerialSyncWriteStrPKc"}
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} {
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D5ac2: formal_parameter {
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{name "msg"}
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{type :$D50af}
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}
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D5ace: lexical_block {} {
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D5acf: DW_TAG_variable {
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{name "p"}
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{type :$D50a9}
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}
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}
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}
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}
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}
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cu {} {
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D2135f: compile_unit {
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{language @DW_LANG_C_plus_plus}
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{name "Main.cpp"}
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} {
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D2216a: base_type {
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{byte_size 1 sdata}
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{encoding @DW_ATE_unsigned_char}
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{name "char"}
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}
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D22171: const_type {
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{type :$D2216a}
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}
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D226c4: pointer_type {
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{byte_size 4 sdata}
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{type :$D22171}
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}
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D226ca: const_type {
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{type :$D226c4}
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}
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D245da: subprogram {
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{name "PrintPanicMsg"}
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} {
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D245e6: formal_parameter {
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{name "msg"}
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{type :$D226ca}
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}
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}
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}
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}
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cu {} {
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D41c21: compile_unit {
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{language @DW_LANG_C99}
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{name "<artificial>"}
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} {
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D42025: subprogram {
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{abstract_origin %$D245da}
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{low_pc 0x80b60 addr}
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{high_pc 0x6c data4}
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} {
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D42038: formal_parameter {
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{abstract_origin %$D245e6}
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}
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D42045: inlined_subroutine {
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{abstract_origin %$D5ab2}
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{low_pc 0x8060 addr}
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{high_pc 0xc data4}
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} {
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D420b5: formal_parameter {
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{abstract_origin %$D5ac2}
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}
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}
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}
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}
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}
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}
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# Build the test executable.
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if {[build_executable $testfile.exp $testfile [list $asm_file $srcfile] {}] \
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== -1} {
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return -1
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}
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# We force the DIEs above to be read in via "-readnow".
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gdb_spawn_with_cmdline_opts "-readnow"
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gdb_load $binfile
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# All we need to do is check whether GDB is alive. Without
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# multidictionaries, it will either crash, assert, or throw an
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# internal_error.
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gdb_test "p 1" "= 1" "GDB is alive"
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