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From: Tom de Vries <vries@sourceware.org> To: gdb-cvs@sourceware.org Subject: [binutils-gdb] [gdb/symtab] Don't complain about function decls Date: Tue, 4 Oct 2022 14:51:12 +0000 (GMT) [thread overview] Message-ID: <20221004145112.CD1BA3858435@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8ba677d35608eab2970a6a649eb3c5c09d142037 commit 8ba677d35608eab2970a6a649eb3c5c09d142037 Author: Tom de Vries <tdevries@suse.de> Date: Tue Oct 4 16:51:03 2022 +0200 [gdb/symtab] Don't complain about function decls [ Requires "[gdb/symtab] Don't complain about inlined functions" as submitted here ( https://sourceware.org/pipermail/gdb-patches/2022-September/191762.html ). ] With the test-case included in this patch, we get: ... (gdb) ptype main^M During symbol reading: cannot get low and high bounds for subprogram DIE \ at 0xc1^M type = int (void)^M (gdb) FAIL: gdb.dwarf2/anon-ns-fn.exp: ptype main without complaints ... The DIE causing the complaint is a function declaration: ... <2><c1>: Abbrev Number: 3 (DW_TAG_subprogram) <c2> DW_AT_name : foo <c8> DW_AT_declaration : 1 ... which is referred to from the DIE representing the function definition: ... <1><f4>: Abbrev Number: 7 (DW_TAG_subprogram) <f5> DW_AT_specification: <0xc1> <f9> DW_AT_low_pc : 0x4004c7 <101> DW_AT_high_pc : 0x7 ... which does contain the low and high bounds. Fix this by not complaining about function declarations. Tested on x86_64-linux. Diff: --- gdb/dwarf2/read.c | 4 +++- gdb/testsuite/gdb.dwarf2/anon-ns-fn.cc | 31 +++++++++++++++++++++++++++++++ gdb/testsuite/gdb.dwarf2/anon-ns-fn.exp | 33 +++++++++++++++++++++++++++++++++ 3 files changed, 67 insertions(+), 1 deletion(-) diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c index 812d9c608ef..8e42c0f4d8d 100644 --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -12051,7 +12051,9 @@ read_func_scope (struct die_info *die, struct dwarf2_cu *cu) && attr->is_nonnegative () && (attr->as_nonnegative () == DW_INL_inlined || attr->as_nonnegative () == DW_INL_declared_inlined)); - if (!external_p && !inlined_p) + attr = dwarf2_attr (die, DW_AT_declaration, cu); + bool decl_p = attr != nullptr && attr->as_boolean (); + if (!external_p && !inlined_p && !decl_p) complaint (_("cannot get low and high bounds " "for subprogram DIE at %s"), sect_offset_str (die->sect_off)); diff --git a/gdb/testsuite/gdb.dwarf2/anon-ns-fn.cc b/gdb/testsuite/gdb.dwarf2/anon-ns-fn.cc new file mode 100644 index 00000000000..62a650528c4 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/anon-ns-fn.cc @@ -0,0 +1,31 @@ +/* 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/>. */ + +namespace +{ + void + foo (void) + { + } +} + +int +main (void) +{ + foo (); + return 0; +} diff --git a/gdb/testsuite/gdb.dwarf2/anon-ns-fn.exp b/gdb/testsuite/gdb.dwarf2/anon-ns-fn.exp new file mode 100644 index 00000000000..71b1a477a39 --- /dev/null +++ b/gdb/testsuite/gdb.dwarf2/anon-ns-fn.exp @@ -0,0 +1,33 @@ +# 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/>. + +if {[skip_cplus_tests]} { continue } + +standard_testfile .cc + +if [prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}] { + return -1 +} + +set cmd "ptype main" + +set re \ + [multi_line \ + $cmd \ + "type = int \\(void\\)"] + +with_complaints 5 { + gdb_test $cmd $re "$cmd without complaints" +}
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