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Re: ctermid: return string literal, document MT-Safety pitfall

From: Florian Weimer <fweimer at redhat dot com>
To: Alexandre Oliva <aoliva at redhat dot com>, libc-alpha at sourceware dot org
Date: Tue, 11 Nov 2014 14:30:40 +0100
Subject: Re: ctermid: return string literal, document MT-Safety pitfall
Authentication-results: sourceware.org; auth=none
References: <ortx2b8l2k dot fsf at free dot home>

On 11/07/2014 09:35 AM, Alexandre Oliva wrote:

This was based on an interpretation that strcpy (and memcpy, and
compiler-inlined versions thereof) could not write garbage in the
destination before writing the intended values, because this would be a
deviation from the specification, and it could be observed by an
asynchronous signal handler.


Which specification do you mean?  glibc or the C standard?

--
Florian Weimer / Red Hat Product Security

Follow-Ups:
- Re: ctermid: return string literal, document MT-Safety pitfall
  - From: Alexandre Oliva

References:
- ctermid: return string literal, document MT-Safety pitfall
  - From: Alexandre Oliva

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