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150
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1 //===-------------- thread_local_destruction_order.pass.cpp ---------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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173
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9 // Darwin TLV finalization routines used to fail when creating a thread-local
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10 // variable in the destructor for another thread-local variable:
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11 // - http://lists.llvm.org/pipermail/cfe-dev/2016-November/051376.html
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12 // - rdar://29523281
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13 // This was fixed in dyld in macos 10.15.
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14 //
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15 // XFAIL: macosx10.14
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16 // XFAIL: macosx10.13
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17 // XFAIL: macosx10.12
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18 // XFAIL: macosx10.11
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19 // XFAIL: macosx10.10
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20 // XFAIL: macosx10.9
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21
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150
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22 // UNSUPPORTED: c++98, c++03
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23 // UNSUPPORTED: libcxxabi-no-threads
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24
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25 #include <cassert>
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26 #include <thread>
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27
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28 int seq = 0;
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29
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30 class OrderChecker {
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31 public:
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32 explicit OrderChecker(int n) : n_{n} { }
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33
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34 ~OrderChecker() {
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35 assert(seq++ == n_);
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36 }
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37
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38 private:
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39 int n_;
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40 };
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41
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42 template <int ID>
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43 class CreatesThreadLocalInDestructor {
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44 public:
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45 ~CreatesThreadLocalInDestructor() {
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46 thread_local OrderChecker checker{ID};
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47 }
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48 };
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49
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50 OrderChecker global{7};
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51
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52 void thread_fn() {
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53 static OrderChecker fn_static{5};
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54 thread_local CreatesThreadLocalInDestructor<2> creates_tl2;
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55 thread_local OrderChecker fn_thread_local{1};
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56 thread_local CreatesThreadLocalInDestructor<0> creates_tl0;
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57 }
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58
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59 int main() {
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60 static OrderChecker fn_static{6};
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61
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62 std::thread{thread_fn}.join();
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63 assert(seq == 3);
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64
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65 thread_local OrderChecker fn_thread_local{4};
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66 thread_local CreatesThreadLocalInDestructor<3> creates_tl;
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67
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68 return 0;
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69 }
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