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[PATCH] PR libstdc++/81173 fix undefined memset with null pointer

From: Jonathan Wakely <jwakely at redhat dot com>
To: libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
Date: Thu, 22 Jun 2017 15:18:31 +0100
Subject: [PATCH] PR libstdc++/81173 fix undefined memset with null pointer
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This fixes recently introduced undefined behaviour caused by passing a
null pointer to memset. The patch also removes some trailing
whitespace.

	PR libstdc++/81173
	* include/bits/stl_bvector.h (vector<bool>::_M_initialize_value):
	Do not pass null pointer to memset.

Tested powerpc64le-linux, committed to trunk.

Attachment: patch.txt
Description: Text document

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