[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: integer types
From: |
Andreas Schwab |
Subject: |
Re: integer types |
Date: |
Wed, 05 Apr 2023 18:26:09 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) |
On Apr 05 2023, Eli Zaretskii wrote:
> If the pointer is to a narrower type, then dereferencing it will take
> only part of the bits of the integer value. Depending on the
> endianness, that part could be the LSB (good) or MSB (bad).
A conversion operates on the value, not representation, so endianess
doesn't come into play.
On the other hand, converting an integer to a pointer and back does not
guarantee preservation of the integer value (unlike the other direction
as long as the intervening integer type is wide enough).
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
- [PATCH] Silence compiler warnings with MinGW64, Arash Esbati, 2023/04/05
- Re: [PATCH] Silence compiler warnings with MinGW64, Eli Zaretskii, 2023/04/05
- Re: [PATCH] Silence compiler warnings with MinGW64, Patrice Dumas, 2023/04/05
- Re: [PATCH] Silence compiler warnings with MinGW64, Eli Zaretskii, 2023/04/05
- integer types, Gavin Smith, 2023/04/05
- Re: integer types, Eli Zaretskii, 2023/04/05
- Re: integer types, Gavin Smith, 2023/04/05
- Re: integer types, Eli Zaretskii, 2023/04/05
- Re: integer types, Gavin Smith, 2023/04/05
- Re: integer types,
Andreas Schwab <=
Re: [PATCH] Silence compiler warnings with MinGW64, Gavin Smith, 2023/04/05
- Re: [PATCH] Silence compiler warnings with MinGW64, Arash Esbati, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Gavin Smith, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Eli Zaretskii, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Arash Esbati, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Eli Zaretskii, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Gavin Smith, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Arash Esbati, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Arash Esbati, 2023/04/06
- Re: [PATCH] Silence compiler warnings with MinGW64, Eli Zaretskii, 2023/04/06