79 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -emit-pch -o %t.pch %s2// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -fdelayed-template-parsing -emit-pch -o %t.delayed.pch %s3// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -DMAIN_FILE \4// RUN: -include-pch %t.pch \5// RUN: -emit-llvm -verify -o - %s | FileCheck %s6// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -DMAIN_FILE -fdelayed-template-parsing \7// RUN: -include-pch %t.delayed.pch \8// RUN: -emit-llvm -verify -o - %s | FileCheck %s9 10#ifndef MAIN_FILE11 12extern "C" void consume(int b);13 14template <int I>15void function() {16#pragma pack(push, 1)17 struct packedAt1 {18 char a;19 unsigned long long b;20 char c;21 unsigned long long d;22 // 18 bytes total23 };24#pragma pack(push, slot1, 2)25 struct packedAt2 {26 char a; // +1 byte of padding27 unsigned long long b;28 char c; // +1 byte of padding29 unsigned long long d;30 // 20 bytes total31 };32#pragma pack(push, 4)33 struct packedAt4 {34 char a; // +3 bytes of padding35 unsigned long long b;36 char c; // +3 bytes of padding37 unsigned long long d;38 // 24 bytes total39 };40#pragma pack(push, 16)41 struct packedAt16 {42 char a; // +7 bytes of padding43 unsigned long long b;44 char c; // +7 bytes of padding45 unsigned long long d;46 // 32 bytes total47 };48#pragma pack(pop, slot1) // This should return packing to 1 (established before push(slot1))49 struct packedAfterPopBackTo1 {50 char a;51 unsigned long long b;52 char c;53 unsigned long long d;54 };55#pragma pack(pop)56 57 consume(sizeof(packedAt1)); // 1858 consume(sizeof(packedAt2)); // 2059 consume(sizeof(packedAt4)); // 2460 consume(sizeof(packedAt16)); // 3261 consume(sizeof(packedAfterPopBackTo1)); // 18 again62}63 64#else65 66// CHECK-LABEL: define linkonce_odr dso_local void @"??$function@$0A@@@YAXXZ"(67// CHECK: call void @consume(i32 noundef 18)68// CHECK-NEXT: call void @consume(i32 noundef 20)69// CHECK-NEXT: call void @consume(i32 noundef 24)70// CHECK-NEXT: call void @consume(i32 noundef 32)71// CHECK-NEXT: call void @consume(i32 noundef 18)72void foo() {73 function<0>();74}75 76// expected-no-diagnostics77 78#endif79