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* [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float
@ 2005-11-21 17:24 bernie at develer dot com
2005-11-21 17:28 ` [Bug preprocessor/24976] " pinskia at gcc dot gnu dot org
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: bernie at develer dot com @ 2005-11-21 17:24 UTC (permalink / raw)
To: gcc-bugs
This testcase:
int a = 0xe+100;
Produces a diagnostic message that would surprise
most users:
foo.c:1:9: error: invalid suffix "+100" on integer constant
I'm not sure what the standard says about ambiguity
between the hex float notation and the regular + operator,
but many users are going to think of this behavior as
a parser bug.
--
Summary: simple hexadecimal number parsed as C99 hex float
Product: gcc
Version: 4.0.3
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bernie at develer dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] simple hexadecimal number parsed as C99 hex float
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
@ 2005-11-21 17:28 ` pinskia at gcc dot gnu dot org
2005-11-21 18:21 ` joseph at codesourcery dot com
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-11-21 17:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2005-11-21 17:28 -------
(In reply to comment #0)
> but many users are going to think of this behavior as
> a parser bug.
This is more of a tokenizer error rather than a parser error.
Anyways 2.95.3 gives:
t.c:1: missing white space after number `0xe'
I wonder if we should accept this code for -std=c89.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |preprocessor
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] simple hexadecimal number parsed as C99 hex float
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
2005-11-21 17:28 ` [Bug preprocessor/24976] " pinskia at gcc dot gnu dot org
@ 2005-11-21 18:21 ` joseph at codesourcery dot com
2005-11-21 18:41 ` bernie at develer dot com
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: joseph at codesourcery dot com @ 2005-11-21 18:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from joseph at codesourcery dot com 2005-11-21 18:21 -------
Subject: Re: New: simple hexadecimal number parsed as C99 hex
float
On Mon, 21 Nov 2005, bernie at develer dot com wrote:
> This testcase:
>
> int a = 0xe+100;
0xe+100 is a single preprocessing number. If the end of
<http://gcc.gnu.org/onlinedocs/gcc/Incompatibilities.html> is unclear,
please let us know how we could have improved it so that you would have
realised it applies to this situation and so there is no bug.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] simple hexadecimal number parsed as C99 hex float
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
2005-11-21 17:28 ` [Bug preprocessor/24976] " pinskia at gcc dot gnu dot org
2005-11-21 18:21 ` joseph at codesourcery dot com
@ 2005-11-21 18:41 ` bernie at develer dot com
2005-11-21 22:27 ` [Bug preprocessor/24976] [3.4/4.0/4.1/4.2 Regression] simple hexadecimal number and plus/minus and no space pinskia at gcc dot gnu dot org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: bernie at develer dot com @ 2005-11-21 18:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from bernie at develer dot com 2005-11-21 18:41 -------
(In reply to comment #2)
> 0xe+100 is a single preprocessing number. If the end of
> <http://gcc.gnu.org/onlinedocs/gcc/Incompatibilities.html> is unclear,
> please let us know how we could have improved it so that you would have
> realised it applies to this situation and so there is no bug.
We could handle it like we do for >> in nested template
declarations: split the token and try reparsing the
expression with the "other" meaning. If it works, give
the friendly error message ("maybe you meant 0xe + 100?").
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [3.4/4.0/4.1/4.2 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (2 preceding siblings ...)
2005-11-21 18:41 ` bernie at develer dot com
@ 2005-11-21 22:27 ` pinskia at gcc dot gnu dot org
2005-12-19 18:07 ` mmitchel at gcc dot gnu dot org
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-11-21 22:27 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2005-11-21 22:27 -------
Confirmed, as a diagnostic issue only. I am going to mark this as a regression
even though I know that the preprocessor was rewritten between 2.95.3 and
3.0.x.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |minor
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords|rejects-valid |diagnostic
Known to fail| |3.0.4
Known to work| |2.95.3
Last reconfirmed|0000-00-00 00:00:00 |2005-11-21 22:27:09
date| |
Summary|simple hexadecimal number |[3.4/4.0/4.1/4.2 Regression]
|parsed as C99 hex float |simple hexadecimal number
| |and plus/minus and no space
Target Milestone|--- |4.0.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [3.4/4.0/4.1/4.2 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (3 preceding siblings ...)
2005-11-21 22:27 ` [Bug preprocessor/24976] [3.4/4.0/4.1/4.2 Regression] simple hexadecimal number and plus/minus and no space pinskia at gcc dot gnu dot org
@ 2005-12-19 18:07 ` mmitchel at gcc dot gnu dot org
2006-03-11 3:22 ` mmitchel at gcc dot gnu dot org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-12-19 18:07 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from mmitchel at gcc dot gnu dot org 2005-12-19 18:07 -------
Downgraded to P5, as this will never be a release-critical issue.
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [3.4/4.0/4.1/4.2 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (4 preceding siblings ...)
2005-12-19 18:07 ` mmitchel at gcc dot gnu dot org
@ 2006-03-11 3:22 ` mmitchel at gcc dot gnu dot org
2007-02-03 16:03 ` [Bug preprocessor/24976] [4.0/4.1/4.2/4.3 " gdr at gcc dot gnu dot org
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2006-03-11 3:22 UTC (permalink / raw)
To: gcc-bugs
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.0.3 |4.0.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [4.0/4.1/4.2/4.3 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (5 preceding siblings ...)
2006-03-11 3:22 ` mmitchel at gcc dot gnu dot org
@ 2007-02-03 16:03 ` gdr at gcc dot gnu dot org
2007-02-03 17:26 ` jsm28 at gcc dot gnu dot org
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: gdr at gcc dot gnu dot org @ 2007-02-03 16:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from gdr at gcc dot gnu dot org 2007-02-03 16:03 -------
Won't fix in GCC-4.0.x. Adjusting milestone.
--
gdr at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.0.4 |---
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [4.0/4.1/4.2/4.3 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (6 preceding siblings ...)
2007-02-03 16:03 ` [Bug preprocessor/24976] [4.0/4.1/4.2/4.3 " gdr at gcc dot gnu dot org
@ 2007-02-03 17:26 ` jsm28 at gcc dot gnu dot org
2007-02-14 9:37 ` mmitchel at gcc dot gnu dot org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2007-02-03 17:26 UTC (permalink / raw)
To: gcc-bugs
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.1.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [4.0/4.1/4.2/4.3 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (7 preceding siblings ...)
2007-02-03 17:26 ` jsm28 at gcc dot gnu dot org
@ 2007-02-14 9:37 ` mmitchel at gcc dot gnu dot org
2008-07-04 20:15 ` [Bug preprocessor/24976] [4.2/4.3/4.4 " jsm28 at gcc dot gnu dot org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2007-02-14 9:37 UTC (permalink / raw)
To: gcc-bugs
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.1.2 |4.1.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [4.2/4.3/4.4 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (8 preceding siblings ...)
2007-02-14 9:37 ` mmitchel at gcc dot gnu dot org
@ 2008-07-04 20:15 ` jsm28 at gcc dot gnu dot org
2009-03-31 19:02 ` [Bug preprocessor/24976] [4.3/4.4/4.5 " jsm28 at gcc dot gnu dot org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2008-07-04 20:15 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from jsm28 at gcc dot gnu dot org 2008-07-04 20:14 -------
Closing 4.1 branch.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.1/4.2/4.3/4.4 Regression]|[4.2/4.3/4.4 Regression]
|simple hexadecimal number |simple hexadecimal number
|and plus/minus and no space |and plus/minus and no space
Target Milestone|4.1.3 |4.2.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [4.3/4.4/4.5 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (9 preceding siblings ...)
2008-07-04 20:15 ` [Bug preprocessor/24976] [4.2/4.3/4.4 " jsm28 at gcc dot gnu dot org
@ 2009-03-31 19:02 ` jsm28 at gcc dot gnu dot org
2009-08-04 12:38 ` rguenth at gcc dot gnu dot org
2010-05-22 18:16 ` [Bug preprocessor/24976] [4.3/4.4/4.5/4.6 " rguenth at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2009-03-31 19:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from jsm28 at gcc dot gnu dot org 2009-03-31 19:01 -------
Closing 4.2 branch.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.2/4.3/4.4/4.5 Regression]|[4.3/4.4/4.5 Regression]
|simple hexadecimal number |simple hexadecimal number
|and plus/minus and no space |and plus/minus and no space
Target Milestone|4.2.5 |4.3.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [4.3/4.4/4.5 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (10 preceding siblings ...)
2009-03-31 19:02 ` [Bug preprocessor/24976] [4.3/4.4/4.5 " jsm28 at gcc dot gnu dot org
@ 2009-08-04 12:38 ` rguenth at gcc dot gnu dot org
2010-05-22 18:16 ` [Bug preprocessor/24976] [4.3/4.4/4.5/4.6 " rguenth at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-08-04 12:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from rguenth at gcc dot gnu dot org 2009-08-04 12:27 -------
GCC 4.3.4 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.4 |4.3.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug preprocessor/24976] [4.3/4.4/4.5/4.6 Regression] simple hexadecimal number and plus/minus and no space
2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
` (11 preceding siblings ...)
2009-08-04 12:38 ` rguenth at gcc dot gnu dot org
@ 2010-05-22 18:16 ` rguenth at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-05-22 18:16 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from rguenth at gcc dot gnu dot org 2010-05-22 18:10 -------
GCC 4.3.5 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.5 |4.3.6
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24976
^ permalink raw reply [flat|nested] 14+ messages in thread
end of thread, other threads:[~2010-05-22 18:15 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
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2005-11-21 17:24 [Bug c/24976] New: simple hexadecimal number parsed as C99 hex float bernie at develer dot com
2005-11-21 17:28 ` [Bug preprocessor/24976] " pinskia at gcc dot gnu dot org
2005-11-21 18:21 ` joseph at codesourcery dot com
2005-11-21 18:41 ` bernie at develer dot com
2005-11-21 22:27 ` [Bug preprocessor/24976] [3.4/4.0/4.1/4.2 Regression] simple hexadecimal number and plus/minus and no space pinskia at gcc dot gnu dot org
2005-12-19 18:07 ` mmitchel at gcc dot gnu dot org
2006-03-11 3:22 ` mmitchel at gcc dot gnu dot org
2007-02-03 16:03 ` [Bug preprocessor/24976] [4.0/4.1/4.2/4.3 " gdr at gcc dot gnu dot org
2007-02-03 17:26 ` jsm28 at gcc dot gnu dot org
2007-02-14 9:37 ` mmitchel at gcc dot gnu dot org
2008-07-04 20:15 ` [Bug preprocessor/24976] [4.2/4.3/4.4 " jsm28 at gcc dot gnu dot org
2009-03-31 19:02 ` [Bug preprocessor/24976] [4.3/4.4/4.5 " jsm28 at gcc dot gnu dot org
2009-08-04 12:38 ` rguenth at gcc dot gnu dot org
2010-05-22 18:16 ` [Bug preprocessor/24976] [4.3/4.4/4.5/4.6 " rguenth at gcc dot gnu dot org
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