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Re: The --with-wide-int build and Lisp_Sub_Char_Table assertion

From: Dmitry Antipov
Subject: Re: The --with-wide-int build and Lisp_Sub_Char_Table assertion
Date: Mon, 12 Jan 2015 21:32:32 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0

On 01/12/2015 08:26 PM, Eli Zaretskii wrote:

This is exactly the flaw: the assumption that if the size of 'struct
vectorlike_header' is 4, the offset of the next struct member is also
4.  In reality, a compiler can add padding, and evidently here it did,
probably to get that member aligned an a 8-byte boundary.

For MinGW/32, 1) what happens if you use -m[no-]ms-bitfields?  (See
section 6.38.5 i386 Variable Attributes).  Or 2) what about using
__attribute__((packed))?  Stefan doesn't like it for an obvious reasons,
but may be just for this particular case...


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