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From: Tom de Vries <vries@sourceware.org> To: gdb-cvs@sourceware.org Subject: [binutils-gdb] gdb: Fix toplevel types with -fdebug-types-section Date: Tue, 28 Apr 2020 14:12:48 +0000 (GMT) [thread overview] Message-ID: <20200428141248.7048A385DC1F@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=770479f223ecd1920dd3cc683b05b24af25c4613 commit 770479f223ecd1920dd3cc683b05b24af25c4613 Author: Mark Williams <mark@myosotissp.com> Date: Tue Apr 28 16:12:45 2020 +0200 gdb: Fix toplevel types with -fdebug-types-section When debugging a program compiled with -fdebug-types-section, only the first top-level type in each file is visible to gdb. The problem was caused by moving the assignment to list_in_scope from process_full_comp_unit and process_full_type_unit to start_symtab. This was fine for process_full_comp_unit, because symtabs and comp units are one-to-one. But there can be many type units per symtab (one for each type), and we only call start_symtab for the first one. This adds the necessary assignments on the paths where start_symtab is not called. gdb/Changelog: 2020-04-28 Mark Williams <mark@myosotissp.com> PR gdb/24480 * dwarf2read.c: Add missing assingments to list_in_scope when start_symtab was already called. gdb/testsuite/Changelog: 2020-04-28 Mark Williams <mark@myosotissp.com> PR gdb/24480 * dw4-toplevel-types.exp: Test for top level types. * dw4-toplevel-types.cc: Test for top level types. Diff: --- gdb/dwarf2/read.c | 2 ++ gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.cc | 21 +++++++++++++++ gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.exp | 36 +++++++++++++++++++++++++ 3 files changed, 59 insertions(+) diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c index c5528887faf..130c20dbd82 100644 --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -10921,6 +10921,7 @@ dwarf2_cu::setup_type_unit_groups (struct die_info *die) COMPUNIT_DIRNAME (cust), compunit_language (cust), 0, cust)); + list_in_scope = get_builder ()->get_file_symbols (); } return; } @@ -10972,6 +10973,7 @@ dwarf2_cu::setup_type_unit_groups (struct die_info *die) COMPUNIT_DIRNAME (cust), compunit_language (cust), 0, cust)); + list_in_scope = get_builder ()->get_file_symbols (); auto &file_names = line_header->file_names (); for (i = 0; i < file_names.size (); ++i) diff --git a/gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.cc b/gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.cc new file mode 100644 index 00000000000..c47598c46ef --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.cc @@ -0,0 +1,21 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 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/>. */ + +struct X {} x; +struct Y {} y; +struct Z {} z; +int main() {} diff --git a/gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.exp b/gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.exp new file mode 100644 index 00000000000..8e3875ad71e --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/dw4-toplevel-types.exp @@ -0,0 +1,36 @@ +# Copyright 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/>. + +# Test dwarf4 signatured types (DW_TAG_type_unit). + +standard_testfile .cc + +# This test is intended for targets which support DWARF-4. +# Since we pass an explicit -gdwarf-4 -fdebug-types-section to the compiler, +# we let that be the test of whether the target supports it. + +if { [prepare_for_testing "failed to prepare" "${testfile}" \ + $srcfile {debug c++ additional_flags=-gdwarf-4 \ + additional_flags=-fdebug-types-section}] } { + return -1 +} + +if ![runto_main] { + return -1 +} + +gdb_test "ptype X" "type = struct X {.*" +gdb_test "ptype Y" "type = struct Y {.*" +gdb_test "ptype Z" "type = struct Z {.*"
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