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[PATCH] PR77994 Convert std::sample size argument to suitable type

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: Mon, 17 Oct 2016 15:38:40 +0100
Subject: [PATCH] PR77994 Convert std::sample size argument to suitable type
Authentication-results: sourceware.org; auth=none

The __sample algorithms should work with the iterator's
difference_type, not the user-supplied _Distance type.

	PR libstdc++/77994
	* include/bits/stl_algo.h (sample): Convert size argument to iterator
	difference type.
	* include/experimental/algorithm (experimental::sample): Likewise.
	* testsuite/25_algorithms/sample/2.cc: New test.

Tested powerpc64le-linux, committed to trunk. I'll also fix
experimental::sample on gcc-6-branch.

Attachment: patch.txt
Description: Text document

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