From 9e7c9a03eefafae549dafa8bec13232a780804ef Mon Sep 17 00:00:00 2001 From: Hannes Domani Date: Fri, 3 Apr 2020 21:38:31 +0200 Subject: [PATCH] Fix attributes of typed enums of typedefs For this enum: typedef unsigned char byte; enum byte_enum : byte { byte_val = 128 }; The unsigned attribute is not set: (gdb) p byte_val $1 = -128 That's because it uses the attributes of the 'byte' typedef for the enum. So this changes it to use the attributes of the underlying 'unsigned char' instead. gdb/ChangeLog: 2020-04-03 Hannes Domani PR gdb/25325 * dwarf2/read.c (read_enumeration_type): Fix typed enum attributes. gdb/testsuite/ChangeLog: 2020-04-03 Hannes Domani PR gdb/25325 * gdb.cp/typed-enum.cc: New test. * gdb.cp/typed-enum.exp: New file. --- gdb/ChangeLog | 5 +++++ gdb/dwarf2/read.c | 10 +++++---- gdb/testsuite/ChangeLog | 6 +++++ gdb/testsuite/gdb.cp/typed-enum.cc | 35 +++++++++++++++++++++++++++++ gdb/testsuite/gdb.cp/typed-enum.exp | 31 +++++++++++++++++++++++++ 5 files changed, 83 insertions(+), 4 deletions(-) create mode 100644 gdb/testsuite/gdb.cp/typed-enum.cc create mode 100644 gdb/testsuite/gdb.cp/typed-enum.exp diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 86d949b212c..014752e4ddc 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2020-04-03 Hannes Domani + + PR gdb/25325 + * dwarf2/read.c (read_enumeration_type): Fix typed enum attributes. + 2020-04-03 Tom Tromey * dwarf2/loc.c (disassemble_dwarf_expression) : diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c index 0df5676c4d3..bcc3116071e 100644 --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -15553,12 +15553,14 @@ read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) the underlying type if needed. */ if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) { - TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); + struct type *underlying_type = TYPE_TARGET_TYPE (type); + underlying_type = check_typedef (underlying_type); + TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); if (TYPE_LENGTH (type) == 0) - TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); + TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); if (TYPE_RAW_ALIGN (type) == 0 - && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) - set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); + && TYPE_RAW_ALIGN (underlying_type) != 0) + set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); } TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index f794bbd0d3c..226a0702fe3 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2020-04-03 Hannes Domani + + PR gdb/25325 + * gdb.cp/typed-enum.cc: New test. + * gdb.cp/typed-enum.exp: New file. + 2020-04-02 Andrew Burgess * gdb.dwarf2/dw2-inline-small-func-lbls.c: New file. diff --git a/gdb/testsuite/gdb.cp/typed-enum.cc b/gdb/testsuite/gdb.cp/typed-enum.cc new file mode 100644 index 00000000000..caf4288fff7 --- /dev/null +++ b/gdb/testsuite/gdb.cp/typed-enum.cc @@ -0,0 +1,35 @@ +/* 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 . */ + +typedef unsigned char byte; + +enum byte_enum : byte +{ + byte_val = 128 +}; + +enum uchar_enum : unsigned char +{ + uchar_val = 128 +}; + +int main() +{ + int v1 = byte_val; + int v2 = uchar_val; + return v1 == v2; +} diff --git a/gdb/testsuite/gdb.cp/typed-enum.exp b/gdb/testsuite/gdb.cp/typed-enum.exp new file mode 100644 index 00000000000..0427b792790 --- /dev/null +++ b/gdb/testsuite/gdb.cp/typed-enum.exp @@ -0,0 +1,31 @@ +# 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 . +# +# Check if unsigned typedef are handled correctly with typed enums. + +if { [skip_cplus_tests] } { continue } + +standard_testfile .cc + +if [get_compiler_info "c++"] { + return -1 +} + +if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} { + return -1 +} + +gdb_test "print (int)byte_val" "= 128" +gdb_test "print (int)uchar_val" "= 128" -- 2.30.2