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* [Bug c/102998] New: Wrong documentation for -Warray-parameter
@ 2021-10-29 11:00 roland.illig at gmx dot de
2021-10-29 11:02 ` [Bug c/102998] " roland.illig at gmx dot de
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: roland.illig at gmx dot de @ 2021-10-29 11:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
Bug ID: 102998
Summary: Wrong documentation for -Warray-parameter
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: roland.illig at gmx dot de
Target Milestone: ---
https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html says:
> For example, the warning triggers for the following redeclarations because
> the first one allows an array of any size to be passed to f while the second
> one with the keyword static specifies that the array argument must have at
> least four elements.
>
> void f (int[static 4]);
> void f (int[]); // warning (inconsistent array form)
1. The words 'first' and 'second' should be swapped.
2. Why should there be a warning? The array from malloc is large enough, it has
exactly 4 elements.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/102998] Wrong documentation for -Warray-parameter
2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
@ 2021-10-29 11:02 ` roland.illig at gmx dot de
2021-10-29 21:14 ` egallager at gcc dot gnu.org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: roland.illig at gmx dot de @ 2021-10-29 11:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
--- Comment #1 from Roland Illig <roland.illig at gmx dot de> ---
> for the following redeclarations
That's wrong. There is only 1 redeclaration in the code that follows.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/102998] Wrong documentation for -Warray-parameter
2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
2021-10-29 11:02 ` [Bug c/102998] " roland.illig at gmx dot de
@ 2021-10-29 21:14 ` egallager at gcc dot gnu.org
2024-01-20 0:44 ` sandra at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: egallager at gcc dot gnu.org @ 2021-10-29 21:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |egallager at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
Martin Sebor added this warning; cc-ing him
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/102998] Wrong documentation for -Warray-parameter
2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
2021-10-29 11:02 ` [Bug c/102998] " roland.illig at gmx dot de
2021-10-29 21:14 ` egallager at gcc dot gnu.org
@ 2024-01-20 0:44 ` sandra at gcc dot gnu.org
2024-01-20 1:43 ` sandra at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: sandra at gcc dot gnu.org @ 2024-01-20 0:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sandra at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |sandra at gcc dot gnu.org
--- Comment #3 from sandra at gcc dot gnu.org ---
The argument to malloc is 4, but it's given in bytes, not array elements. I
can tweak this example to make it more clear that the array is too small.
There are other problems here too; -Warray-parameter isn't listed in the
Options Summary section, it doesn't say what N defaults to if you omit it, or
that the negative form is equivalent to -Warray-parameter=0.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/102998] Wrong documentation for -Warray-parameter
2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
` (2 preceding siblings ...)
2024-01-20 0:44 ` sandra at gcc dot gnu.org
@ 2024-01-20 1:43 ` sandra at gcc dot gnu.org
2024-01-20 14:39 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: sandra at gcc dot gnu.org @ 2024-01-20 1:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
--- Comment #4 from sandra at gcc dot gnu.org ---
Hmmm, I ran into PR113515 with this example.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/102998] Wrong documentation for -Warray-parameter
2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
` (3 preceding siblings ...)
2024-01-20 1:43 ` sandra at gcc dot gnu.org
@ 2024-01-20 14:39 ` cvs-commit at gcc dot gnu.org
2024-01-20 16:25 ` sandra at gcc dot gnu.org
2024-01-20 17:18 ` pinskia at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-01-20 14:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sandra Loosemore <sandra@gcc.gnu.org>:
https://gcc.gnu.org/g:8fd992a3dfa8c3e00d4a41846de2061ff6c5652a
commit r14-8304-g8fd992a3dfa8c3e00d4a41846de2061ff6c5652a
Author: Sandra Loosemore <sandra@codesourcery.com>
Date: Sat Jan 20 14:30:17 2024 +0000
Correct documentation for -Warray-parameter [PR102998]
gcc/ChangeLog
PR c/102998
* doc/invoke.texi (Option Summary): Add -Warray-parameter.
(Warning Options): Correct/edit discussion of -Warray-parameter
to make the first example less confusing, and fill in missing info.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/102998] Wrong documentation for -Warray-parameter
2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
` (4 preceding siblings ...)
2024-01-20 14:39 ` cvs-commit at gcc dot gnu.org
@ 2024-01-20 16:25 ` sandra at gcc dot gnu.org
2024-01-20 17:18 ` pinskia at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: sandra at gcc dot gnu.org @ 2024-01-20 16:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
--- Comment #6 from sandra at gcc dot gnu.org ---
Fixed.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/102998] Wrong documentation for -Warray-parameter
2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
` (5 preceding siblings ...)
2024-01-20 16:25 ` sandra at gcc dot gnu.org
@ 2024-01-20 17:18 ` pinskia at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-20 17:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102998
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |14.0
^ permalink raw reply [flat|nested] 8+ messages in thread
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2021-10-29 11:00 [Bug c/102998] New: Wrong documentation for -Warray-parameter roland.illig at gmx dot de
2021-10-29 11:02 ` [Bug c/102998] " roland.illig at gmx dot de
2021-10-29 21:14 ` egallager at gcc dot gnu.org
2024-01-20 0:44 ` sandra at gcc dot gnu.org
2024-01-20 1:43 ` sandra at gcc dot gnu.org
2024-01-20 14:39 ` cvs-commit at gcc dot gnu.org
2024-01-20 16:25 ` sandra at gcc dot gnu.org
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