Re: Unexpected value-at for NULL'd pointer with pthreads

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To: Kyle Harper <kylejharper@xxxxxxxxx>
Subject: Re: Unexpected value-at for NULL'd pointer with pthreads
From: Jonathan Wakely <jwakely.gcc@xxxxxxxxx>
Date: Fri, 21 Aug 2015 11:59:17 +0100
Authentication-results: sourceware.org; auth=none
Cc: gcc-help <gcc-help@xxxxxxxxxxx>
In-reply-to: <CAPcbWWxx3g9Uk9sn5jgG1GgmxSk1fjy5ybHKuRMzdKN3LJqt2Q@mail.gmail.com>

Without looking at the code, I suggest trying GCC's -sanitize=thread
option and/or valgrind's helgrind tool.

References:
- Unexpected value-at for NULL'd pointer with pthreads
  - From: Kyle Harper

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