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# Copyright 2020-2021 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 3 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, see <http://www.gnu.org/licenses/>.
# Test to reproduce the crash described in PR 26693. The following DWARF was
# crashing GDB while loading partial symbols: a DW_TAG_subprogram with a
# DW_AT_specification (pointing to another subprogram), without a DW_AT_name
# and with a template parameter (DW_TAG_template_type_parameter). More
# precisely, the crash was happening when trying to compute the full name of the
# subprogram.
load_lib dwarf.exp
if {![dwarf2_support]} {
return 0
}
standard_testfile main.c .S
lassign [function_range main ${srcdir}/${subdir}/${srcfile}] \
main_start main_length
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global main_start main_length
cu { label cu_start } {
DW_TAG_compile_unit {
{DW_AT_language @DW_LANG_C_plus_plus}
} {
declare_labels templated_subprogram int
int: DW_TAG_base_type {
{DW_AT_name "int"}
{DW_AT_byte_size 4 DW_FORM_data1}
{DW_AT_encoding @DW_ATE_signed}
}
# The templated subprogram.
templated_subprogram: DW_TAG_subprogram {
{DW_AT_name "apply"}
}
# The template specialization.
#
# The low and high PC are phony: we just need an address range that
# is valid in the program, so we use the main function's range.
DW_TAG_subprogram {
{DW_AT_specification :$templated_subprogram}
{MACRO_AT_range main}
} {
DW_TAG_template_type_param {
{DW_AT_name "T"}
{DW_AT_type :$int DW_FORM_ref4}
}
}
}
}
aranges {} cu_start {
arange "$main_start" "$main_length"
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] {nodebug}] } {
return -1
}
if ![runto_main] {
return -1
}
# Just a sanity check to make sure GDB slurped the symbols correctly.
gdb_test "print apply<int>" " = {void \\(void\\)} $hex <apply<int>\\(\\)>"
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