Index: include/clang/Basic/AlignedAllocation.h =================================================================== --- /dev/null +++ include/clang/Basic/AlignedAllocation.h @@ -0,0 +1,44 @@ +//===--- AlignedAllocation.h - Aligned Allocation ---------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +/// +/// \file +/// \brief Defines a function that returns the minimum OS versions supporting +/// C++17's aligned allocation functions. +/// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H +#define LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H + +#include "clang/Basic/VersionTuple.h" +#include "llvm/ADT/Triple.h" +#include "llvm/Support/ErrorHandling.h" + +namespace clang { + +inline VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS) { + switch (OS) { + default: + break; + case llvm::Triple::Darwin: + case llvm::Triple::MacOSX: // Earliest supporting version is 10.13. + return VersionTuple(10U, 13U); + case llvm::Triple::IOS: + case llvm::Triple::TvOS: // Earliest supporting version is 11.0.0. + return VersionTuple(11U); + case llvm::Triple::WatchOS: // Earliest supporting version is 4.0.0. + return VersionTuple(4U); + } + + llvm_unreachable("Unexpected OS"); +} + +} // end namespace clang + +#endif // LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H Index: include/clang/Basic/DiagnosticSemaKinds.td =================================================================== --- include/clang/Basic/DiagnosticSemaKinds.td +++ include/clang/Basic/DiagnosticSemaKinds.td @@ -6420,8 +6420,8 @@ "guarantees %2 bytes">, InGroup, DefaultIgnore; def warn_aligned_allocation_unavailable :Warning< - "aligned %select{allocation|deallocation}0 function of type '%1' possibly " - "unavailable on %2">, InGroup, DefaultError; + "aligned %select{allocation|deallocation}0 function of type '%1' is only " + "available on %2 %3 or newer">, InGroup, DefaultError; def note_silence_unligned_allocation_unavailable : Note< "if you supply your own aligned allocation functions, use " "-Wno-aligned-allocation-unavailable to silence this diagnostic">; Index: lib/Driver/ToolChains/Darwin.cpp =================================================================== --- lib/Driver/ToolChains/Darwin.cpp +++ lib/Driver/ToolChains/Darwin.cpp @@ -10,6 +10,7 @@ #include "Darwin.h" #include "Arch/ARM.h" #include "CommonArgs.h" +#include "clang/Basic/AlignedAllocation.h" #include "clang/Basic/ObjCRuntime.h" #include "clang/Basic/VirtualFileSystem.h" #include "clang/Driver/Compilation.h" @@ -1743,19 +1744,27 @@ } bool Darwin::isAlignedAllocationUnavailable() const { + llvm::Triple::OSType OS; + switch (TargetPlatform) { case MacOS: // Earlier than 10.13. - return TargetVersion < VersionTuple(10U, 13U, 0U); + OS = llvm::Triple::MacOSX; + break; case IPhoneOS: case IPhoneOSSimulator: + OS = llvm::Triple::IOS; + break; case TvOS: case TvOSSimulator: // Earlier than 11.0. - return TargetVersion < VersionTuple(11U, 0U, 0U); + OS = llvm::Triple::TvOS; + break; case WatchOS: case WatchOSSimulator: // Earlier than 4.0. - return TargetVersion < VersionTuple(4U, 0U, 0U); + OS = llvm::Triple::WatchOS; + break; } - llvm_unreachable("Unsupported platform"); + + return TargetVersion < alignedAllocMinVersion(OS); } void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, Index: lib/Sema/SemaExprCXX.cpp =================================================================== --- lib/Sema/SemaExprCXX.cpp +++ lib/Sema/SemaExprCXX.cpp @@ -24,6 +24,7 @@ #include "clang/AST/ExprObjC.h" #include "clang/AST/RecursiveASTVisitor.h" #include "clang/AST/TypeLoc.h" +#include "clang/Basic/AlignedAllocation.h" #include "clang/Basic/PartialDiagnostic.h" #include "clang/Basic/TargetInfo.h" #include "clang/Lex/Preprocessor.h" @@ -1660,9 +1661,13 @@ bool IsAligned = false; if (FD.isReplaceableGlobalAllocationFunction(&IsAligned) && IsAligned) { + const llvm::Triple &T = S.getASTContext().getTargetInfo().getTriple(); + StringRef OSName = AvailabilityAttr::getPlatformNameSourceSpelling( + S.getASTContext().getTargetInfo().getPlatformName()); + S.Diag(Loc, diag::warn_aligned_allocation_unavailable) - << IsDelete << FD.getType().getAsString() - << S.getASTContext().getTargetInfo().getTriple().str(); + << IsDelete << FD.getType().getAsString() << OSName + << alignedAllocMinVersion(T.getOS()).getAsString(); S.Diag(Loc, diag::note_silence_unligned_allocation_unavailable); } } Index: test/SemaCXX/unavailable_aligned_allocation.cpp =================================================================== --- test/SemaCXX/unavailable_aligned_allocation.cpp +++ test/SemaCXX/unavailable_aligned_allocation.cpp @@ -1,6 +1,12 @@ // RUN: %clang_cc1 -triple x86_64-apple-macosx10.12.0 -fexceptions -faligned-alloc-unavailable -std=c++1z -verify %s // RUN: %clang_cc1 -triple x86_64-apple-macosx10.12.0 -fexceptions -std=c++1z -verify -DNO_ERRORS %s // RUN: %clang_cc1 -triple x86_64-apple-macosx10.12.0 -fexceptions -faligned-allocation -faligned-alloc-unavailable -std=c++14 -verify %s +// RUN: %clang_cc1 -triple arm64-apple-ios10.0.0 -fexceptions -faligned-alloc-unavailable -std=c++1z -verify -DIOS %s +// RUN: %clang_cc1 -triple arm64-apple-ios10.0.0 -fexceptions -std=c++1z -verify -DNO_ERRORS %s +// RUN: %clang_cc1 -triple arm64-apple-tvos10.0.0 -fexceptions -faligned-alloc-unavailable -std=c++1z -verify -DTVOS %s +// RUN: %clang_cc1 -triple arm64-apple-tvos10.0.0 -fexceptions -std=c++1z -verify -DNO_ERRORS %s +// RUN: %clang_cc1 -triple armv7k-apple-watchos3.0.0 -fexceptions -faligned-alloc-unavailable -std=c++1z -verify -DWATCHOS %s +// RUN: %clang_cc1 -triple armv7k-apple-watchos3.0.0 -fexceptions -std=c++1z -verify -DNO_ERRORS %s namespace std { typedef decltype(sizeof(0)) size_t; @@ -56,44 +62,68 @@ #ifdef NO_ERRORS // expected-no-diagnostics #else -// expected-error@-16 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' possibly unavailable on}} +// expected-error@-16 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on}} // expected-note@-17 {{if you supply your own aligned allocation functions}} -// expected-error@-18 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' possibly unavailable on}} +// expected-error@-18 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on}} // expected-note@-19 {{if you supply your own aligned allocation functions}} -// expected-error@-20 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' possibly unavailable on}} +// expected-error@-20 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on}} // expected-note@-21 {{if you supply your own aligned allocation functions}} -// expected-error@-22 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' possibly unavailable on}} +// expected-error@-22 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on}} // expected-note@-23 {{if you supply your own aligned allocation functions}} -// expected-error@-24 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' possibly unavailable on}} +// expected-error@-24 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on}} // expected-note@-25 {{if you supply your own aligned allocation functions}} -// expected-error@-26 {{aligned allocation function of type 'void *(std::size_t, std::align_val_t, const std::nothrow_t &) noexcept' possibly unavailable on}} +// expected-error@-26 {{aligned allocation function of type 'void *(std::size_t, std::align_val_t, const std::nothrow_t &) noexcept' is only available on}} // expected-note@-27 {{if you supply your own aligned allocation functions}} -// expected-error@-28 {{aligned deallocation function of type 'void (void *, std::align_val_t, const std::nothrow_t &) noexcept' possibly unavailable on}} +// expected-error@-28 {{aligned deallocation function of type 'void (void *, std::align_val_t, const std::nothrow_t &) noexcept' is only available on}} // expected-note@-29 {{if you supply your own aligned allocation functions}} -// expected-error@-29 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' possibly unavailable on}} +// expected-error@-29 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on}} // expected-note@-30 {{if you supply your own aligned allocation functions}} -// expected-error@-31 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' possibly unavailable on}} +// expected-error@-31 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on}} // expected-note@-32 {{if you supply your own aligned allocation functions}} -// expected-error@-33 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' possibly unavailable on}} +// expected-error@-33 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on}} // expected-note@-34 {{if you supply your own aligned allocation functions}} -// expected-error@-35 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' possibly unavailable on}} +// expected-error@-35 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on}} // expected-note@-36 {{if you supply your own aligned allocation functions}} -// expected-error@-37 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' possibly unavailable on}} +// expected-error@-37 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on}} // expected-note@-38 {{if you supply your own aligned allocation functions}} -// expected-error@-39 {{aligned allocation function of type 'void *(std::size_t, std::align_val_t, const std::nothrow_t &) noexcept' possibly unavailable on}} +// expected-error@-39 {{aligned allocation function of type 'void *(std::size_t, std::align_val_t, const std::nothrow_t &) noexcept' is only available on}} // expected-note@-40 {{if you supply your own aligned allocation functions}} -// expected-error@-41 {{aligned deallocation function of type 'void (void *, std::align_val_t, const std::nothrow_t &) noexcept' possibly unavailable on}} +// expected-error@-41 {{aligned deallocation function of type 'void (void *, std::align_val_t, const std::nothrow_t &) noexcept' is only available on}} // expected-note@-42 {{if you supply your own aligned allocation functions}} #endif +void testOveralignedCheckOS() { + auto *p = new OveralignedS; +} + +#ifdef NO_ERRORS +// expected-no-diagnostics +#else +#if defined(IOS) +// expected-error@-7 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on iOS 11 or newer}} +// expected-error@-8 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on iOS 11 or newer}}} +#elif defined(TVOS) +// expected-error@-10 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on tvOS 11 or newer}}} +// expected-error@-11 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on tvOS 11 or newer}}} +#elif defined(WATCHOS) +// expected-error@-13 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on watchOS 4 or newer}}} +// expected-error@-14 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on watchOS 4 or newer}}} +#else +// expected-error@-16 {{aligned allocation function of type 'void *(unsigned long, enum std::align_val_t)' is only available on macOS 10.13 or newer}}} +// expected-error@-17 {{aligned deallocation function of type 'void (void *, enum std::align_val_t) noexcept' is only available on macOS 10.13 or newer}}} +#endif + +// expected-note@-20 2 {{if you supply your own aligned allocation functions}} +#endif + // No errors if user-defined aligned allocation functions are available. void *operator new(std::size_t __sz, std::align_val_t) { static char array[256];