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Re: [PATCH] dfa: port to gcc -fsanitize=undefined

From: Paul Eggert
Subject: Re: [PATCH] dfa: port to gcc -fsanitize=undefined
Date: Mon, 16 Jan 2017 11:57:03 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1

Kamil Dudka wrote:
It can cause a real crash in certain execution environments.

Which ones? I'm not interested in environments like -fsanitize=undefined, which is designed to catch violations of the standard. I want to know of a real execution environment where memcpy (0, 0, 0) does something bad, and why it does so.

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