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Re: AC_CHECK_SIZEOF for members

From: Paul Eggert
Subject: Re: AC_CHECK_SIZEOF for members
Date: Tue, 10 May 2005 16:46:27 -0700
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.4 (gnu/linux)

Sam Steingold <address@hidden> writes:

> it appears that AC_CHECK_SIZEOF works only with types, not members.

Yes, that's correct.  You'd need to write a variant to do what you want.

Wouldn't it be easier to do this within C?  E.g.:

   struct utmpx u;
   enum {
       (sizeof u.ut_tv != sizeof (struct timeval))
   if (GLIBC_2_3_2_STRUCT_UTMPX_BUG) ...

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