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PR c++/20020 concerns a crash in cp_print_value_fields. The immediate cause is that cp_print_value_fields does not handle the case where value_static_field fails. This is fixed in this patch by calling cp_print_static_field from the "try" block. Digging a bit deeper, the error occurs because GCC does not emit a DW_AT_const_value for a static constexpr member appearing in a template class. I've filed a GCC bug for this. Tested on x86-64 Fedora 29. gdb/ChangeLog 2019-05-29 Tom Tromey <tromey@adacore.com> PR c++/20020: * cp-valprint.c (cp_print_value_fields): Call cp_print_static_field inside "try". gdb/testsuite/ChangeLog 2019-05-29 Tom Tromey <tromey@adacore.com> PR c++/20020: * gdb.cp/constexpr-field.exp: New file. * gdb.cp/constexpr-field.cc: New file.
37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
# Copyright 2019 Free Software Foundation, Inc.
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#
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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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# This file is part of the gdb testsuite.
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if {[skip_cplus_tests]} { continue }
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standard_testfile .cc
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
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{c++ debug additional_flags=-std=c++17}]} {
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return -1
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}
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if {![runto_main]} {
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perror "couldn't run to breakpoint"
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continue
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}
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# "x" sometimes isn't available due to
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90526
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gdb_test "print x" " = {static f = .*}"
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gdb_test "print y" " = {static f = true}"
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