--- Comment #12 from pinskia at gcc dot gnu dot org 2005-12-07 17:10
---
Reopening to ...
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pinskia at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #13 from pinskia at gcc dot gnu dot org 2005-12-07 17:10
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To close as a dup of bug 16895.
*** This bug has been marked as a duplicate of 16895 ***
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pinskia at gcc dot gnu dot org changed:
What|Removed |Added
--- Additional Comments From falk at debian dot org 2005-02-27 11:16
---
The C standard does in fact not allow this conversion. However,
I agree that it might be nice to have an option for semantics as in the
C++ standard (4.4). They allow this, and it is safe.
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--- Additional Comments From kmk at ssl dot org 2005-02-27 12:48 ---
I'm not sure I understand why it is thought that the C standard forbids the
conversion I'm talking about here. In fact, the final committee draft of the ISO
C standard that I have appears to be silent about the issue of
--- Additional Comments From joseph at codesourcery dot com 2005-02-27
13:05 ---
Subject: Re: New: GCC generates non-compliant warnings for
qualifier promotion
On Sun, 27 Feb 2005, kmk at ssl dot org wrote:
For any qualifier q, a pointer to a non-q-qualified type may be converted
--- Additional Comments From falk at debian dot org 2005-02-27 13:20
---
(In reply to comment #5)
Am I wrong? Where does it state in the C standard that you cannot perform a
multi-level qualifier promotion?
Nowhere. It follows from the fact that it is not allowed explicitly in
--- Additional Comments From kmk at ssl dot org 2005-02-27 21:37 ---
1. A pointer is a derived type.
2. A derived type is not qualified by the qualifiers (if any) of the type from
which it is derived.
3. For any qualifier q, a POINTER to a non-q-qualified type may be converted to
a
--- Additional Comments From kmk at ssl dot org 2005-02-27 21:43 ---
6. I meant right-hand side not left-hand side.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20230
--- Additional Comments From joseph at codesourcery dot com 2005-02-27
22:30 ---
Subject: Re: GCC generates non-compliant warnings for qualifier
promotion
On Sun, 27 Feb 2005, kmk at ssl dot org wrote:
1. A pointer is a derived type.
2. A derived type is not qualified by the
--- Additional Comments From kmk at ssl dot org 2005-02-27 23:12 ---
But const char * isn't a qualified version of char *
Ahhh. Now I see your point. Amazingly enough, the C standard does not, under any
circumstances, permit objects (including the targets of pointers) to be
qualifier
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What|Removed |Added
Component|debug |c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20230
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-27
05:32 ---
Quals can only be promoted once.
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What|Removed |Added
Status|UNCONFIRMED
--- Additional Comments From kmk at ssl dot org 2005-02-27 06:03 ---
Exactly where does it state that you can only promote one _level_ of qualifier,
as opposed to promoting a single qualifier scope more than once?
Not only that, but even if you declare the string array this way,
char
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