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llvm-project/clang/test/Lexer/aligned-allocation.cpp

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[Preprocessor] Allow libc++ to detect when aligned allocation is unavailable. Libc++ needs to know when aligned allocation is supported by clang, but is otherwise unavailable at link time. Otherwise, libc++ will incorrectly end up generating calls to `__builtin_operator_new`/`__builtin_operator_delete` with alignment arguments. This patch implements the following changes: * The `__cpp_aligned_new` feature test macro to no longer be defined when aligned allocation is otherwise enabled but unavailable. * The Darwin driver no longer passes `-faligned-alloc-unavailable` when the user manually specifies `-faligned-allocation` or `-fno-aligned-allocation`. * Instead of a warning Clang now generates a hard error when an aligned allocation or deallocation function is referenced but unavailable. Patch by Eric Fiselier. Reviewers: rsmith, vsapsai, erik.pilkington, ahatanak, dexonsmith Reviewed By: rsmith Subscribers: Quuxplusone, cfe-commits Differential Revision: https://reviews.llvm.org/D45015 llvm-svn: 338934
2018-08-04 07:12:37 +08:00
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.12.0 -fexceptions -std=c++17 -verify %s \
// RUN: -DEXPECT_DEFINED
//
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.12.0 -fexceptions -std=c++17 -verify %s \
// RUN: -faligned-alloc-unavailable
//
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.12.0 -fexceptions -std=c++17 -verify %s \
// RUN: -faligned-allocation -faligned-alloc-unavailable
[SystemZ][z/OS] Set aligned allocation unavailable by default for z/OS Aligned allocation is not supported on z/OS. This patch sets -faligned-alloc-unavailable as default in z/OS toolchain. Reviewed By: abhina.sreeskantharajan, hubert.reinterpretcast Differential Revision: https://reviews.llvm.org/D87611
2020-09-17 01:52:28 +08:00
//
// RUN: %clang_cc1 -triple s390x-none-zos -fexceptions -std=c++17 -verify %s \
// RUN: -DEXPECT_DEFINED
//
// RUN: %clang_cc1 -triple s390x-none-zos -fexceptions -std=c++17 -verify %s \
// RUN: -faligned-alloc-unavailable
//
// RUN: %clang_cc1 -triple s390x-none-zos -fexceptions -std=c++17 -verify %s \
// RUN: -faligned-allocation -faligned-alloc-unavailable
[Preprocessor] Allow libc++ to detect when aligned allocation is unavailable. Libc++ needs to know when aligned allocation is supported by clang, but is otherwise unavailable at link time. Otherwise, libc++ will incorrectly end up generating calls to `__builtin_operator_new`/`__builtin_operator_delete` with alignment arguments. This patch implements the following changes: * The `__cpp_aligned_new` feature test macro to no longer be defined when aligned allocation is otherwise enabled but unavailable. * The Darwin driver no longer passes `-faligned-alloc-unavailable` when the user manually specifies `-faligned-allocation` or `-fno-aligned-allocation`. * Instead of a warning Clang now generates a hard error when an aligned allocation or deallocation function is referenced but unavailable. Patch by Eric Fiselier. Reviewers: rsmith, vsapsai, erik.pilkington, ahatanak, dexonsmith Reviewed By: rsmith Subscribers: Quuxplusone, cfe-commits Differential Revision: https://reviews.llvm.org/D45015 llvm-svn: 338934
2018-08-04 07:12:37 +08:00
// Test that __cpp_aligned_new is not defined when CC1 is passed
[SystemZ][z/OS] Set aligned allocation unavailable by default for z/OS Aligned allocation is not supported on z/OS. This patch sets -faligned-alloc-unavailable as default in z/OS toolchain. Reviewed By: abhina.sreeskantharajan, hubert.reinterpretcast Differential Revision: https://reviews.llvm.org/D87611
2020-09-17 01:52:28 +08:00
// -faligned-alloc-unavailable by the Darwin and the z/OS driver, even when
// aligned allocation is actually enabled.
[Preprocessor] Allow libc++ to detect when aligned allocation is unavailable. Libc++ needs to know when aligned allocation is supported by clang, but is otherwise unavailable at link time. Otherwise, libc++ will incorrectly end up generating calls to `__builtin_operator_new`/`__builtin_operator_delete` with alignment arguments. This patch implements the following changes: * The `__cpp_aligned_new` feature test macro to no longer be defined when aligned allocation is otherwise enabled but unavailable. * The Darwin driver no longer passes `-faligned-alloc-unavailable` when the user manually specifies `-faligned-allocation` or `-fno-aligned-allocation`. * Instead of a warning Clang now generates a hard error when an aligned allocation or deallocation function is referenced but unavailable. Patch by Eric Fiselier. Reviewers: rsmith, vsapsai, erik.pilkington, ahatanak, dexonsmith Reviewed By: rsmith Subscribers: Quuxplusone, cfe-commits Differential Revision: https://reviews.llvm.org/D45015 llvm-svn: 338934
2018-08-04 07:12:37 +08:00
// expected-no-diagnostics
#ifdef EXPECT_DEFINED
# ifndef __cpp_aligned_new
# error "__cpp_aligned_new" should be defined
# endif
#else
# ifdef __cpp_aligned_new
# error "__cpp_aligned_new" should not be defined
# endif
#endif