9f6c202e57
While looking into a failure in gdb.go/package.exp with gcc-11, I noticed that gdb shows some complaints when loading the executable (also with gcc-10, where the test-case passes): ... $ gdb -batch -iex "set complaints 100" package.10 -ex start During symbol reading: Attribute value is not a constant (DW_FORM_sec_offset) Temporary breakpoint 1 at 0x402ae6: file gdb.go/package1.go, line 8. During symbol reading: Attribute value is not a constant (DW_FORM_sec_offset) During symbol reading: Invalid .debug_rnglists data (no base address) ... Fix this by using as_unsigned () to read DW_AT_ranges in the partial DIE reader, similar to how that is done in dwarf2_get_pc_bounds. Tested on x86_64-linux. gdb/ChangeLog: 2021-01-25 Bernd Edlinger <bernd.edlinger@hotmail.de> Simon Marchi <simon.marchi@polymtl.ca> Tom de Vries <tdevries@suse.de> * dwarf2/read.c (partial_die_info::read): Use as_unsigned () for DW_AT_ranges. gdb/testsuite/ChangeLog: 2021-01-25 Tom de Vries <tdevries@suse.de> * gdb.dwarf2/dw2-ranges-psym.exp (gdb_load_no_complaints): New proc. * lib/gdb.exp: Use gdb_load_no_complaints.
141 lines
3.8 KiB
Plaintext
141 lines
3.8 KiB
Plaintext
# Copyright 2018-2021 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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load_lib dwarf.exp
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# Test that psymbols are made when DW_AT_ranges is used.
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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unsupported "dwarf2 support required for this test"
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return 0
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}
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if [get_compiler_info] {
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return -1
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}
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if !$gcc_compiled {
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unsupported "gcc required for this test"
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return 0
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}
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standard_testfile main.c .c -dw.S
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# We need to know the size of integer and address types in order to
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# write some of the debugging info we'd like to generate.
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#
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# For that, we ask GDB by debugging our test program. Any program
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# would do, but since we already have it specifically for this
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# testcase, might as well use that.
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if { [prepare_for_testing "failed to prepare" ${testfile} \
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[list ${srcfile} ${srcfile2}]] } {
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return -1
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}
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set asm_file [standard_output_file $srcfile3]
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Dwarf::assemble $asm_file {
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global srcdir subdir srcfile srcfile2
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declare_labels integer_label volatile_label func_ranges_label cu_ranges_label
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set int_size [get_sizeof "int" 4]
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# Find start address and length for our functions.
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set sources [list ${srcdir}/${subdir}/$srcfile ${srcdir}/${subdir}/$srcfile2]
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lassign [function_range foo $sources] \
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foo_start foo_len
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set foo_end "$foo_start + $foo_len"
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lassign [function_range foo_low $sources] \
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foo_low_start foo_low_len
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set foo_low_end "$foo_low_start + $foo_low_len"
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lassign [function_range bar $sources] \
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bar_start bar_len
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set bar_end "$bar_start + $bar_len"
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lassign [function_range baz $sources] \
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baz_start baz_len
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set baz_end "$baz_start + $baz_len"
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cu {} {
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compile_unit {
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{language @DW_LANG_C}
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{name dw-ranges-psym.c}
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{low_pc 0 addr}
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{ranges ${cu_ranges_label} DW_FORM_sec_offset}
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} {
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integer_label: DW_TAG_base_type {
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{DW_AT_byte_size $int_size DW_FORM_sdata}
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{DW_AT_encoding @DW_ATE_signed}
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{DW_AT_name integer}
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}
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volatile_label: DW_TAG_volatile_type {
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{type :$integer_label}
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}
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subprogram {
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{external 1 flag}
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{name someothername}
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{ranges ${func_ranges_label} DW_FORM_sec_offset}
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}
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subprogram {
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{external 1 flag}
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{name bar}
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{low_pc $bar_start addr}
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{high_pc $bar_len DW_FORM_data4}
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}
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subprogram {
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{external 1 flag}
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{name baz}
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{low_pc $baz_start addr}
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{high_pc $baz_len DW_FORM_data4}
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}
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}
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}
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# Generate ranges data.
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ranges {is_64 [is_64_target]} {
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func_ranges_label: sequence {
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range $foo_start $foo_end
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range $foo_low_start $foo_low_end
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}
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cu_ranges_label: sequence {
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range $foo_start $foo_end
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range $foo_low_start $foo_low_end
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range $bar_start $bar_end
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range $baz_start $baz_end
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}
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}
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}
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if { [build_executable "failed to prepare" ${testfile} \
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[list $srcfile $srcfile2 $asm_file] {nodebug}] } {
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return -1
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}
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clean_restart
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gdb_load_no_complaints $binfile
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if ![runto_main] {
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return -1
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}
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# "someothername" should be put into the partial symbol table, but
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# there was a bug causing functions using DW_AT_ranges not to be.
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# Note we use a name that is very different from the linkage name, in
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# order to not set the breakpoint via minsyms.
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gdb_test "break someothername" \
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"Breakpoint.*at.*"
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