37 lines · cpp
1// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -Wover-aligned %s -isystem %S/Inputs -verify=precxx17 %std_cxx11-142// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -Wover-aligned %s -isystem %S/Inputs -verify %std_cxx17-3 4// expected-no-diagnostics5 6// This test ensures that we still get the warning even if we #include <new>7// where the header here simulates <new>.8#include <warn-new-overaligned-3.h>9 10namespace test1 {11struct Test {12 template <typename T>13 struct SeparateCacheLines {14 T data;15 } __attribute__((aligned(256)));16 17 SeparateCacheLines<int> high_contention_data[10];18};19 20void helper() {21 Test t;22 new Test; // precxx17-warning {{type 'Test' requires 256 bytes of alignment and the default allocator only guarantees}}23 new Test[10]; // precxx17-warning {{type 'Test' requires 256 bytes of alignment and the default allocator only guarantees}}24}25}26 27namespace test2 {28struct helper { int i __attribute__((aligned(256))); };29 30struct Placement {31 Placement() {32 new (d) helper();33 }34 helper *d;35};36}37