[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Compiler warnings in dispnew.c

From: Stefan Monnier
Subject: Re: Compiler warnings in dispnew.c
Date: Mon, 29 Nov 2021 12:49:56 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Andreas Schwab [2021-11-28 12:07:01] wrote:
> -  memcpy (&to->x, &from->x, sizeof *to - off);
> +  memcpy ((char *) to + off, (char *) from + off, sizeof *to - off);

I wonder: is the (char*) cast sufficient or is it necessary to
"obfuscate" the code by writing `to + off` instead of `&to->x`?
[ By "obfuscate" I mean here to hide from the compiler, rather than from
  humans, because I'm not sure which of the two is more clear to
  a human, here.  ]


reply via email to

[Prev in Thread] Current Thread [Next in Thread]