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Eric Fiselier 7ffcd984c4 LWG 2843 "Unclear behavior of std::pmr::memory_resource::do_allocate()" 
Patch by Arthur O'Dwyer.
Reviewed as https://reviews.llvm.org/D47344

new_delete_resource().allocate(n, a) has basically two permissible results:

* Return an appropriately sized and aligned block.
* Throw bad_alloc.

Before this patch, libc++'s new_delete_resource would do a third and impermissible thing, which was
to return an appropriately sized but inappropriately under-aligned block. This is now fixed.

(This came up while I was stress-testing unsynchronized_pool_resource on my MacBook. If we can't
trust the default resource to return appropriately aligned blocks, pretty much everything breaks.
For similar reasons, I would strongly support just patching __libcpp_allocate directly, but I don't
care to die on that hill, so I made this patch as a <memory_resource>-specific workaround.)

llvm-svn: 355763
 		2019-03-09 00:38:19 +00:00
clang [8.0 Regression] Fix handling of `__builtin_constant_p` inside template arguments, enumerators, case statements, and the enable_if attribute. 2019-03-08 22:06:48 +00:00
clang-tools-extra [clang-tidy] NFC: Negate the name and semantics of the isNotInMacro function. 2019-03-08 15:37:15 +00:00
compiler-rt [HWASan] Save + print registers when tag mismatch occurs in AArch64. 2019-03-08 21:22:35 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc Adjust documentation for git migration. 2019-01-29 16:37:27 +00:00
libcxx LWG 2843 "Unclear behavior of std::pmr::memory_resource::do_allocate()" 2019-03-09 00:38:19 +00:00
libcxxabi Revert "[runtimes] Move libunwind, libc++abi and libc++ to lib/ and include/" 2019-03-08 20:33:55 +00:00
libunwind Revert "[runtimes] Move libunwind, libc++abi and libc++ to lib/ and include/" 2019-03-08 20:33:55 +00:00
lld [LLD] Fixed flaky unit test based on build directory. 2019-03-08 22:33:22 +00:00
lldb Break cycle lldb/Commands [3->] lldb/Expression [1->] lldb/Commands 2019-03-09 00:10:52 +00:00
llgo Adjust documentation for git migration. 2019-01-29 16:37:27 +00:00
llvm Rename a local variable counter to Counter. 2019-03-08 23:32:07 +00:00
openmp [OpenMP][stats] Update stats gathering macros 2019-03-08 21:23:34 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly [opaque pointer types] Update calls to CreateCall to pass the function 2019-02-08 19:30:46 +00:00
pstl [pstl] Fix missing parallel policy guards 2019-03-01 01:26:35 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.