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From: Tom de Vries <vries@sourceware.org> To: gdb-cvs@sourceware.org Subject: [binutils-gdb] [gdb/symtab] Support .gdb_index section with TUs in .debug_info Date: Mon, 12 Sep 2022 08:05:34 +0000 (GMT) [thread overview] Message-ID: <20220912080534.AD8583857023@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=abe47e91d8c4b40429bc5834f8a91c25b10172ca commit abe47e91d8c4b40429bc5834f8a91c25b10172ca Author: Tom de Vries <tdevries@suse.de> Date: Mon Sep 12 10:05:18 2022 +0200 [gdb/symtab] Support .gdb_index section with TUs in .debug_info The .gdb_index variant of commit d878bb39e41 ("[gdb/symtab] Support .debug_names section with TUs in .debug_info"). Tested on x86_64-linux. Diff: --- gdb/dwarf2/read.c | 7 ++-- gdb/testsuite/gdb.dwarf2/gdb-index-types-dwarf5.c | 29 +++++++++++++++ .../gdb.dwarf2/gdb-index-types-dwarf5.exp | 41 ++++++++++++++++++++++ 3 files changed, 75 insertions(+), 2 deletions(-) diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c index da99402cff0..29ccd00a1da 100644 --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -2707,13 +2707,16 @@ dwarf2_read_gdb_index { /* We can only handle a single .debug_types when we have an index. */ - if (per_bfd->types.size () != 1) + if (per_bfd->types.size () > 1) { per_bfd->all_comp_units.clear (); return 0; } - dwarf2_section_info *section = &per_bfd->types[0]; + dwarf2_section_info *section + = (per_bfd->types.size () == 1 + ? &per_bfd->types[0] + : &per_bfd->info); create_signatured_type_table_from_index (per_bfd, section, types_list, types_list_elements); diff --git a/gdb/testsuite/gdb.dwarf2/gdb-index-types-dwarf5.c b/gdb/testsuite/gdb.dwarf2/gdb-index-types-dwarf5.c new file mode 100644 index 00000000000..f568c82917e --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/gdb-index-types-dwarf5.c @@ -0,0 +1,29 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2022 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/>. */ + +struct struct_with_int_member { + int member; +}; + +struct struct_with_int_member var; + +int +main (void) +{ + return 0; +} diff --git a/gdb/testsuite/gdb.dwarf2/gdb-index-types-dwarf5.exp b/gdb/testsuite/gdb.dwarf2/gdb-index-types-dwarf5.exp new file mode 100644 index 00000000000..27cadc523cd --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/gdb-index-types-dwarf5.exp @@ -0,0 +1,41 @@ +# Copyright 2022 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/>. + +standard_testfile + +set flags {} +lappend flags {additional_flags=-fdebug-types-section} +lappend flags {additional_flags=-gdwarf-5} + +if { [prepare_for_testing "failed to prepare" ${testfile} \ + $srcfile $flags] } { + return -1 +} + +require {ensure_gdb_index $binfile} == 1 + +clean_restart ${binfile} + +# Verify that .gdb_index section is not ignored. +set index [have_index $binfile] +gdb_assert { [string equal $index "gdb_index"] } ".gdb_index used" + +# Verify that we can find the type in the type unit. +set re \ + [multi_line \ + "type = struct struct_with_int_member {" \ + " int member;" \ + "}"] +gdb_test "ptype struct struct_with_int_member" $re
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