llvm-project/clang
Florian Hahn 0aa117dd2c Temporarily revert r337226 "Restructure checking for, and warning on, lifetime extension."
This change breaks on ARM because pointers to clang::InitializedEntity are only
4 byte aligned and do not have 3 bits to store values. A possible solution
would be to change the fields in clang::InitializedEntity to enforce a bigger
alignment requirement.

The error message is

llvm/include/llvm/ADT/PointerIntPair.h:132:3: error: static_assert failed "PointerIntPair with integer size too large for pointer"
  static_assert(IntBits <= PtrTraits::NumLowBitsAvailable,
include/llvm/ADT/PointerIntPair.h:73:13: note: in instantiation of template class 'llvm::PointerIntPairInfo<const clang::InitializedEntity *, 3, llvm::PointerLikeTypeTraits<const clang::InitializedEntity *> >' requested here
    Value = Info::updateInt(Info::updatePointer(0, PtrVal),
llvm/include/llvm/ADT/PointerIntPair.h:51:5: note: in instantiation of member function 'llvm::PointerIntPair<const clang::InitializedEntity *, 3, (anonymous namespace)::LifetimeKind, llvm::PointerLikeTypeTraits<const clang::InitializedEntity *>, llvm::PointerIntPairInfo<const clang::InitializedEntity *, 3, llvm::PointerLikeTypeTraits<const clang::InitializedEntity *> > >::setPointerAndInt' requested here
    setPointerAndInt(PtrVal, IntVal);
    ^
llvm/tools/clang/lib/Sema/SemaInit.cpp:6237:12: note: in instantiation of member function 'llvm::PointerIntPair<const clang::InitializedEntity *, 3, (anonymous namespace)::LifetimeKind, llvm::PointerLikeTypeTraits<const clang::InitializedEntity *>, llvm::PointerIntPairInfo<const clang::InitializedEntity *, 3, llvm::PointerLikeTypeTraits<const clang::InitializedEntity *> > >::PointerIntPair' requested here
    return {Entity, LK_Extended};

Full log here:
http://lab.llvm.org:8011/builders/clang-cmake-armv7-global-isel/builds/1330
http://lab.llvm.org:8011/builders/clang-cmake-armv7-full/builds/1394

llvm-svn: 337255
2018-07-17 09:23:31 +00:00
..
INPUTS
bindings [bindings] Fix most Python binding unittests on Windows 2018-06-21 20:07:03 +00:00
cmake [CMake] Use libc++ and compiler-rt for sanitizers 2018-07-15 03:11:43 +00:00
docs [ASTMatchers] Introduce Objective-C matchers `hasReceiver` and `isInstanceMessage` for ObjCMessageExpr 2018-07-16 20:22:12 +00:00
examples clang-interpreter: Add missing LLVM component Object 2018-06-03 08:12:15 +00:00
include Temporarily revert r337226 "Restructure checking for, and warning on, lifetime extension." 2018-07-17 09:23:31 +00:00
lib Temporarily revert r337226 "Restructure checking for, and warning on, lifetime extension." 2018-07-17 09:23:31 +00:00
runtime [CMake] Make bootstrap and compiler-rt depend on cxx-headers. 2018-06-28 18:35:25 +00:00
test Temporarily revert r337226 "Restructure checking for, and warning on, lifetime extension." 2018-07-17 09:23:31 +00:00
tools PR15730/PR16986 Allow dependently typed vector_size types. 2018-07-13 19:46:04 +00:00
unittests [ASTMatchers] Quickfix for tests. 2018-07-16 20:42:37 +00:00
utils [NFC] Rename clang::AttributeList to clang::ParsedAttr 2018-07-13 15:07:47 +00:00
www Temporarily revert r337226 "Restructure checking for, and warning on, lifetime extension." 2018-07-17 09:23:31 +00:00
.arcconfig
.clang-format
.clang-tidy Backport changes from llvm/.clang_tidy to clang/.clang_tidy configs 2018-03-20 14:39:12 +00:00
.gitignore
CMakeLists.txt [CMake] Make bootstrap and compiler-rt depend on cxx-headers. 2018-06-28 18:35:25 +00:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
ModuleInfo.txt
NOTES.txt
README.txt

README.txt

//===----------------------------------------------------------------------===//
// C Language Family Front-end
//===----------------------------------------------------------------------===//

Welcome to Clang.  This is a compiler front-end for the C family of languages
(C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM
compiler infrastructure project.

Unlike many other compiler frontends, Clang is useful for a number of things
beyond just compiling code: we intend for Clang to be host to a number of
different source-level tools.  One example of this is the Clang Static Analyzer.

If you're interested in more (including how to build Clang) it is best to read
the relevant web sites.  Here are some pointers:

Information on Clang:             http://clang.llvm.org/
Building and using Clang:         http://clang.llvm.org/get_started.html
Clang Static Analyzer:            http://clang-analyzer.llvm.org/
Information on the LLVM project:  http://llvm.org/

If you have questions or comments about Clang, a great place to discuss them is
on the Clang development mailing list:
  http://lists.llvm.org/mailman/listinfo/cfe-dev

If you find a bug in Clang, please file it in the LLVM bug tracker:
  http://llvm.org/bugs/