90dc8dd841
This rebase skips the following patches in upstream: +37025e1b32Make the helper routines in string really be constexpr. This required a bit of refacoring in algorithm as well. Give them better names while we're at it. All of these are internal rotines; no visible functionality change. +164b297099Implement string_view from the library fundamentals TS (n4023). Also works in C++11 and 03, with reduced functionality (mostly in the area of constexpr) +e4694b4129Formatting improvements in the <string_view> synopsis suggested by RSmith. No functionality change. +3a61b30f3aMinor cleanup for string_view; mostly from suggestions by Richard Smith. Also, make the tests pass under c++03 +484728789estring_view enhancements. Move to the correct namespace. Better constexpr support (thanks to Richard for the suggestions). Update the tests to match this. Add <experimental/__config for experimental macros/etc to live. +b1a40264dc[libcxx] Add <experimental/utility> header for LFTS. +3ee7233c80[libcxx] expose experimental::erased_type for all standard versions. +67740670f9NFC. Remove trailing whitespace and tabs. +b9536101dcNFC. Move definition of _LIBCPP_ASSERT into __debug header and remove external include guards. +98c4e404ca. Revert "Turn off extern templates for most uses." Bug: 17255369 Change-Id: I629ff16275d50e4cc8767b253a2c0542468348d8
50 lines
1.0 KiB
C++
50 lines
1.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <random>
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// class random_device;
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// explicit random_device(const string& token = "/dev/urandom");
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#include <random>
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#include <cassert>
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#include <unistd.h>
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int main()
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{
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try
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{
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std::random_device r("wrong file");
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assert(false);
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}
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catch (const std::system_error& e)
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{
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}
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{
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std::random_device r;
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}
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{
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int ec;
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ec = close(STDIN_FILENO);
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assert(!ec);
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ec = close(STDOUT_FILENO);
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assert(!ec);
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ec = close(STDERR_FILENO);
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assert(!ec);
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std::random_device r;
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}
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{
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std::random_device r("/dev/urandom");;
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}
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{
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std::random_device r("/dev/random");;
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}
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}
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