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# Copyright 2018-2020 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/>.
# This tests a segfault that occurs when reading inlined_subroutine DIEs
# with abstract_origins pointing to DIEs in other CUs.
#
# See https://bugzilla.redhat.com/show_bug.cgi?id=1638798 .
load_lib dwarf.exp
# This test can only be run on targets which support DWARF.
if {![dwarf2_support]} {
return 0
}
standard_testfile main.c .S
# Create the DWARF. This is derived from the reproducer in the Fedora
# bugzila mentioned above. For clarity, some "superfluous" DIES have
# been left instead of simplifying/pruning the test further.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
declare_labels Db D72f8 D736e
declare_labels D266465 D266477 D266483 D266496 D266498 D266ad3 D266ad9 \
D266ade D26b227 D26b237
declare_labels D26d8b1 D26d8c3 D26d8cf D26d944 D26d946 D26e103 D26e145 \
D26e415 D26e48c D26df00 D26df06 D26df0b D272519 D274c1a D274c42
cu {} {
Db: compile_unit {
{language @DW_LANG_C99}
{name "<artificial>"}
} {
D72f8: subprogram {
{abstract_origin %$D272519}
{low_pc 0xb9e20 addr}
{high_pc 0x1f5 data4}
} {
D736e: inlined_subroutine {
{abstract_origin %$D26b227}
{low_pc 0xb9efc addr}
{high_pc 0xc data4}
} {
formal_parameter {
{abstract_origin %$D274c42}
}
}
}
}
}
cu {} {
D266465: compile_unit {
{language @DW_LANG_C99}
} {
D266477: typedef {
{name "size_t"}
{type :$D266483}
}
D266483: base_type {
{byte_size 8 sdata}
{encoding @DW_ATE_unsigned}
}
D266496: pointer_type {
{byte_size 8 sdata}
}
D266498: restrict_type {
{type :$D266496}
}
D266ad3: pointer_type {
{byte_size 8 sdata}
{type :$D266ade}
}
D266ad9: restrict_type {
{type :$D266ad3}
}
D266ade: const_type {}
D26b227: subprogram {
{external 1 flag}
{name "memcpy"}
{type :$D266496}
} {
D26b237: formal_parameter {
{name "__dest"}
{type :$D266498}
}
formal_parameter {
{name "__src"}
{type :$D266ad9}
}
formal_parameter {
{name "__len"}
{type :$D266477}
}
}
}
}
cu {} {
D26d8b1: compile_unit {
{language @DW_LANG_C99}
} {
D26d8c3: typedef {
{name "size_t"}
{type :$D26d8cf}
}
D26d8cf: base_type {
{byte_size 8 sdata}
{encoding @DW_ATE_unsigned}
{name "long unsigned int"}
}
D26d944: pointer_type {
{byte_size 8 sdata}
}
D26d946: restrict_type {
{type :$D26d944}
}
D26e103: structure_type {
{name "__object"}
{byte_size 12 sdata}
} {
member {
{name "__ob_next"}
{type :$D26e145}
{data_member_location 0 sdata}
}
}
D26e145: pointer_type {
{byte_size 8 sdata}
{type :$D26e103}
}
D26e415: typedef {
{name "PyObject"}
{type :$D26e103}
}
D26e48c: pointer_type {
{byte_size 8 sdata}
{type :$D26e415}
}
D26df00: pointer_type {
{byte_size 8 sdata}
{type :$D26df0b}
}
D26df06: restrict_type {
{type :$D26df00}
}
D26df0b: const_type {}
D272519: subprogram {
{name "bytes_repeat"}
{type :$D26e48c}
}
D274c1a: subprogram {
{external 1 flag}
{name "memcpy"}
{type :$D26d944}
} {
formal_parameter {
{name "__dest"}
{type :$D26d946}
}
formal_parameter {
{name "__src"}
{type :$D26df06}
}
D274c42: formal_parameter {
{name "__len"}
{type :$D26d8c3}
}
}
}
}
}
if {[prepare_for_testing "failed to prepare" $testfile \
"${asm_file} ${srcfile}" {}]} {
return -1
}
# All we need to do is set a breakpoint, which causes the DWARF
# info to be read, to demonstrate the problem.
gdb_breakpoint "bytes_repeat" message
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