a625a8c9eb
A recent version of GCC changed how fixed-point types are described.
For example, a denominator in one test case now looks like:
GNU_denominator (exprloc)
[ 0] implicit_value: 16 byte block: 00 00 b8 9d 0d 69 55 a0 01 00 00 00 00 00 00 00
... the difference being that this now uses exprloc and emits a
DW_OP_implicit_value for the 16-byte block. (DWARF 5 still uses
DW_FORM_data16.)
This change was made here:
https://gcc.gnu.org/pipermail/gcc-patches/2020-December/560897.html
This patch updates gdb to handle this situation.
Note that, before GCC 11, this test would not give the same answer.
Earlier versions of GCC fell back to GNAT encodings for this case.
gdb/ChangeLog
2021-01-25 Tom Tromey <tromey@adacore.com>
* dwarf2/read.c (get_mpz): New function.
(get_dwarf2_rational_constant): Use it.
gdb/testsuite/ChangeLog
2021-01-25 Tom Tromey <tromey@adacore.com>
* gdb.ada/fixed_points.exp: Add regression test.
* gdb.ada/fixed_points/fixed_points.adb (FP5_Var): New variable.
* gdb.ada/fixed_points/pck.adb (Delta5, FP5_Type): New.
39 lines
1.3 KiB
Ada
39 lines
1.3 KiB
Ada
-- Copyright 2016-2021 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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with System;
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package Pck is
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type FP1_Type is delta 0.1 range -1.0 .. +1.0;
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FP1_Var : FP1_Type := 0.25;
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type FP2_Type is delta 0.01 digits 14;
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FP2_Var : FP2_Type := -0.01;
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type FP3_Type is delta 0.1 range 0.0 .. 1.0 with Small => 0.1/3.0;
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FP3_Var : FP3_Type := 0.1;
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Delta4 : constant := 0.000_000_1;
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type FP4_Type is delta Delta4 range 0.0 .. Delta4 * 10
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with Small => Delta4 / 3.0;
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FP4_Var : FP4_Type := 2 * Delta4;
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Delta5 : constant := 0.000_000_000_000_000_000_1;
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type FP5_Type is delta Delta5 range 0.0 .. Delta5 * 10
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with Small => Delta5 / 3.0;
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procedure Do_Nothing (A : System.Address);
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end pck;
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