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Date: Wed, 06 May 2015 14:29:03 +0200
From: Frank Dittrich <>
Subject: Re: Undefined behavior in bench.c (null pointer passed
 as argument 1 to memcpy)

On 05/06/2015 12:24 PM, Solar Designer wrote:
>> For -fsanitize=alignment, there are error messages for MD5_std.c, lines
>> 745-752: store to misaligned address ... for type "MD5_word', which
>> requires 4 byte alignment.
> We deliberately use unaligned accesses in MD5_std.c when
> ARCH_ALLOWS_UNALIGNED.  You can try building without
> ARCH_ALLOWS_UNALIGNED and see if these messages are gone (I'd be very
> surprised if they are not).

Yes, the error messages for MD5_std.c are gone when I set
The only -fsanitize=undefined error I got from running the test suite
for core john is now this one:

BSDI_fmt.c:279:37: runtime error: left shift of negative value -21.


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