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Re: standards/52571 (max_align_t has smaller alignment than double)



The following reply was made to PR standards/52571; it has been noted by GNATS.

From: =?UTF-8?Q?J=C3=B6rg_Sonnenberger?= <joerg%bec.de@localhost>
To: gnats-bugs%netbsd.org@localhost, standards-manager%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, riastradh%NetBSD.org@localhost,
 bruno%clisp.org@localhost
Cc: 
Subject: Re: standards/52571 (max_align_t has smaller alignment than double)
Date: Wed, 11 Sep 2024 21:24:12 +0200

 GCC has two different alignments. It has a minimal ABI alignment and a 
 preferred alignment. In the SYSV ABI for i386, the biggest alignment is 
 32bit. It is beneficial for certain types to aligned more if it can be 
 done cheaply, that's why a global variable of type double for example is 
 naturally aligned.
 
 Joerg
 


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