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c0689161ed
symtab-> linetable () is set to null in buildsym_compunit::end_compunit_symtab_with_blockvector () if the symtab has no linetable. Attempting to iterate over this linetable using the Python API caused GDB to segfault. Approved-By: Tom Tromey <tom@tromey.com>
73 lines
2.1 KiB
Plaintext
73 lines
2.1 KiB
Plaintext
# Copyright (C) 2024 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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#
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# Test accessing an empty linetable in Python.
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load_lib dwarf.exp
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load_lib gdb-python.exp
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require dwarf2_support allow_python_tests
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standard_testfile .c -dw.S
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set asm_file [standard_output_file ${srcfile2}]
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Dwarf::assemble $asm_file {
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cu {} {
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compile_unit {
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{language @DW_LANG_C}
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{name py-linetable-empty.c}
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} {
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subprogram {
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{MACRO_AT_func {main}}
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}
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}
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}
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}
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if { [prepare_for_testing "failed to prepare" ${testfile} \
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[list $srcfile $asm_file] {nodebug}] } {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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gdb_test "python print(gdb.selected_frame().function().symtab.fullname())" \
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"py-linetable-empty.c" "Test main has symtab"
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# Get the linetable for main's symbol table. This is empty as we didn't include
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# a linetable in the debug info.
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gdb_py_test_silent_cmd "python lt = gdb.selected_frame().function().symtab.linetable()" \
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"get linetable" 0
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gdb_test "python print(lt.is_valid())" "True" \
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"Test linetable is valid"
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gdb_test "python print(lt.line(1))" "None" \
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"Test line() returns None"
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gdb_test "python print(lt.has_line(1))" \
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"RuntimeError.*: Linetable information not found in symbol table.*" \
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"Test has_line() throws exception"
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gdb_test "python print(lt.source_lines())" \
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"RuntimeError.*: Linetable information not found in symbol table.*" \
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"Test source_lines() throws exception"
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gdb_test "python print(list(lt))" "\\\[\\\]" \
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"Test iterating over linetable"
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