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* [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11
@ 2021-06-16 11:41 demoonlit at panathenaia dot halfmoon.jp
2021-06-16 13:03 ` [Bug ada/101094] [11/12 " rguenth at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: demoonlit at panathenaia dot halfmoon.jp @ 2021-06-16 11:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101094
Bug ID: 101094
Summary: [11 regression] 'Enum_Rep returns a unsigned value for
the negative representation in gcc-11
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: demoonlit at panathenaia dot halfmoon.jp
Target Milestone: ---
'Enum_Rep returns a unsigned value for the run-time value having the negative
representation in gcc-11.
It also returns just a representation value for the compile-time value.
In gcc-10 or older, it always returns just a representation value.
Is this intentional changed or not?
Test code
---------
with Ada.Text_IO;
with Ada.Integer_Text_IO;
procedure main is
type T is (Nega, Zero, Posi);
for T use (Nega => -1, Zero => 0, Posi => 1);
begin
-- literal
Ada.Text_IO.Put ("Lite:");
Ada.Integer_Text_IO.Put (T'Enum_Rep (Nega)); -- "-1"
Ada.Text_IO.New_Line;
-- compile-time constant
declare
Cons : constant T := Nega;
begin
Ada.Text_IO.Put ("Cons:");
Ada.Integer_Text_IO.Put (T'Enum_Rep (Cons)); -- "-1"
Ada.Text_IO.New_Line;
end;
-- variable
declare
Vari : T := T'Value ("Nega");
begin
Ada.Text_IO.Put ("Vari:");
Ada.Integer_Text_IO.Put (T'Enum_Rep (Vari)); -- "255"
Ada.Text_IO.New_Line;
end;
-- parameter
declare
procedure Sub1 (Para : T) is
begin
Ada.Text_IO.Put ("Para:");
Ada.Integer_Text_IO.Put (T'Enum_Rep (Para)); -- "255"
Ada.Text_IO.New_Line;
end Sub1;
begin
Sub1 (Nega);
end;
end main;
With gcc-10
-----------
$ gnatmake --version
GNATMAKE 10.2.0
Copyright (C) 1995-2020, Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
$ gnatmake main
gcc -c main.adb
gnatbind -x main.ali
gnatlink main.ali
$ ./main
Lite: -1
Cons: -1
Vari: -1
Para: -1
With gcc-11
-----------
$ gnatmake --version
GNATMAKE 11.1.0
Copyright (C) 1995-2021, Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
$ gnatmake main
gcc -c main.adb
gnatbind -x main.ali
gnatlink main.ali
% ./main
Lite: -1
Cons: -1
Vari: 255
Para: 255
Thanks.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug ada/101094] [11/12 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11
2021-06-16 11:41 [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11 demoonlit at panathenaia dot halfmoon.jp
@ 2021-06-16 13:03 ` rguenth at gcc dot gnu.org
2021-06-30 9:37 ` ebotcazou at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-06-16 13:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101094
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.2
Summary|[11 regression] 'Enum_Rep |[11/12 regression]
|returns a unsigned value |'Enum_Rep returns a
|for the negative |unsigned value for the
|representation in gcc-11 |negative representation in
| |gcc-11
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug ada/101094] [11/12 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11
2021-06-16 11:41 [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11 demoonlit at panathenaia dot halfmoon.jp
2021-06-16 13:03 ` [Bug ada/101094] [11/12 " rguenth at gcc dot gnu.org
@ 2021-06-30 9:37 ` ebotcazou at gcc dot gnu.org
2021-06-30 9:38 ` ebotcazou at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2021-06-30 9:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101094
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-06-30
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
CC| |ebotcazou at gcc dot gnu.org
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> In gcc-10 or older, it always returns just a representation value.
> Is this intentional changed or not?
No, it's an oversight.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug ada/101094] [11/12 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11
2021-06-16 11:41 [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11 demoonlit at panathenaia dot halfmoon.jp
2021-06-16 13:03 ` [Bug ada/101094] [11/12 " rguenth at gcc dot gnu.org
2021-06-30 9:37 ` ebotcazou at gcc dot gnu.org
@ 2021-06-30 9:38 ` ebotcazou at gcc dot gnu.org
2021-07-01 16:13 ` [Bug ada/101094] [11/12 regression] Enum_Rep returns unsigned value for negative representation cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2021-06-30 9:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101094
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot gnu.org
Status|NEW |ASSIGNED
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixing.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug ada/101094] [11/12 regression] Enum_Rep returns unsigned value for negative representation
2021-06-16 11:41 [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11 demoonlit at panathenaia dot halfmoon.jp
` (2 preceding siblings ...)
2021-06-30 9:38 ` ebotcazou at gcc dot gnu.org
@ 2021-07-01 16:13 ` cvs-commit at gcc dot gnu.org
2021-07-01 16:14 ` cvs-commit at gcc dot gnu.org
2021-07-01 18:02 ` ebotcazou at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-07-01 16:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101094
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Eric Botcazou <ebotcazou@gcc.gnu.org>:
https://gcc.gnu.org/g:cdf4576b201aa81fd853b06242b16e4215ead5a9
commit r12-1961-gcdf4576b201aa81fd853b06242b16e4215ead5a9
Author: Eric Botcazou <ebotcazou@adacore.com>
Date: Thu Jul 1 17:57:16 2021 +0200
Use intermediate integer type with proper signedness
This is a minor regression present on mainline and 11 branch, whereby the
value of the Enum_Rep attribute is always unsigned.
gcc/ada/
PR ada/101094
* exp_attr.adb (Get_Integer_Type): Return an integer type with the
same signedness as the input type.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug ada/101094] [11/12 regression] Enum_Rep returns unsigned value for negative representation
2021-06-16 11:41 [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11 demoonlit at panathenaia dot halfmoon.jp
` (3 preceding siblings ...)
2021-07-01 16:13 ` [Bug ada/101094] [11/12 regression] Enum_Rep returns unsigned value for negative representation cvs-commit at gcc dot gnu.org
@ 2021-07-01 16:14 ` cvs-commit at gcc dot gnu.org
2021-07-01 18:02 ` ebotcazou at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-07-01 16:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101094
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Eric Botcazou
<ebotcazou@gcc.gnu.org>:
https://gcc.gnu.org/g:3a17c1663a96640874067988ffe36c1d06fb93a1
commit r11-8667-g3a17c1663a96640874067988ffe36c1d06fb93a1
Author: Eric Botcazou <ebotcazou@adacore.com>
Date: Thu Jul 1 17:57:16 2021 +0200
Use intermediate integer type with proper signedness
This is a minor regression present on mainline and 11 branch, whereby the
value of the Enum_Rep attribute is always unsigned.
gcc/ada/
PR ada/101094
* exp_attr.adb (Get_Integer_Type): Return an integer type with the
same signedness as the input type.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug ada/101094] [11/12 regression] Enum_Rep returns unsigned value for negative representation
2021-06-16 11:41 [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11 demoonlit at panathenaia dot halfmoon.jp
` (4 preceding siblings ...)
2021-07-01 16:14 ` cvs-commit at gcc dot gnu.org
@ 2021-07-01 18:02 ` ebotcazou at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2021-07-01 18:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101094
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Thanks for reporting the problem.
^ permalink raw reply [flat|nested] 7+ messages in thread
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2021-06-16 11:41 [Bug ada/101094] New: [11 regression] 'Enum_Rep returns a unsigned value for the negative representation in gcc-11 demoonlit at panathenaia dot halfmoon.jp
2021-06-16 13:03 ` [Bug ada/101094] [11/12 " rguenth at gcc dot gnu.org
2021-06-30 9:37 ` ebotcazou at gcc dot gnu.org
2021-06-30 9:38 ` ebotcazou at gcc dot gnu.org
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2021-07-01 18:02 ` ebotcazou at gcc dot gnu.org
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