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1 // RUN: rm -rf %t
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2 // RUN: mkdir -p %t
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3 // RUN: split-file %s %t
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4 //
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5 // RUN: %clang_cc1 -std=c++20 %t/A.cppm -emit-module-interface -o %t/A.pcm
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6 // RUN: %clang_cc1 -std=c++20 %t/Use.cpp -fprebuilt-module-path=%t -fsyntax-only -verify
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7
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8 //--- placement.h
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9 namespace std {
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10 using size_t = decltype(sizeof(0));
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11 }
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12 void *operator new(std::size_t, void *p) { return p; }
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13
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14 //--- A.cppm
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15 module;
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16 #include "placement.h"
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17 export module A;
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18 export template<class T>
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19 struct A {
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20 A(void *p) : ptr(new (p) T(43)) {}
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21 private:
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22 void *ptr;
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23 };
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24
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25 export struct B {
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26 B(void *p) : ptr(new (p) int(43)) {}
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27 private:
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28 void *ptr;
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29 };
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30
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31 //--- Use.cpp
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32 // expected-no-diagnostics
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33 import A;
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34 void bar(int *);
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35 void foo(void *ptr) {
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36 A<int>(nullptr); // Good. It should be OK to construct A.
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37 void *p = ::operator new(sizeof(int), ptr); // Bad. The function shouldn't be visible here.
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38 void *q = new (ptr) int(43); // Good. We don't call the placement allocation function directly.
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39 }
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