Changes in warn-dangling-field.cpp

ca975b2f - Fold dangling-field warning into general initialization lifetime checks.

Mon, 23 Jul 2018 18:50:26 +0000

Fold dangling-field warning into general initialization lifetime checks.This reinstates r337627, reverted in r337671, with a fix to correctlyhandle the lvalueness of array subscript expressions on pointers.llvm-svn: 337726 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/warn-dangling-field.cpp

d87aab93 - Restructure checking for, and warning on, lifetime extension.

Tue, 17 Jul 2018 22:24:09 +0000

Restructure checking for, and warning on, lifetime extension.This change implements C++ DR1696, which makes initialization of areference member of a class from a temporary object ill-formed. Thestandard wording here is imprecise, but we interpret it as meaning thatany time a mem-initializer would result in lifetime extension, theprogram is ill-formed.This reinstates r337226, reverted in r337255, with a fix for theInitializedEntity alignment problem that was breaking ARM buildbots.llvm-svn: 337329 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/warn-dangling-field.cpp

0aa117dd - Temporarily revert r337226 "Restructure checking for, and warning on, lifetime extension."

Tue, 17 Jul 2018 09:23:31 +0000

Temporarily revert r337226 "Restructure checking for, and warning on, lifetime extension."This change breaks on ARM because pointers to clang::InitializedEntity are only4 byte aligned and do not have 3 bits to store values. A possible solutionwould be to change the fields in clang::InitializedEntity to enforce a biggeralignment requirement.The error message isllvm/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 >' 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, llvm::PointerIntPairInfo > >::setPointerAndInt' requested here setPointerAndInt(PtrVal, IntVal); ^llvm/tools/clang/lib/Sema/SemaInit.cpp:6237:12: note: in instantiation of member function 'llvm::PointerIntPair, llvm::PointerIntPairInfo > >::PointerIntPair' requested here return {Entity, LK_Extended};Full log here:http://lab.llvm.org:8011/builders/clang-cmake-armv7-global-isel/builds/1330http://lab.llvm.org:8011/builders/clang-cmake-armv7-full/builds/1394llvm-svn: 337255 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/warn-dangling-field.cpp

0a9969b3 - Restructure checking for, and warning on, lifetime extension.

Tue, 17 Jul 2018 00:11:41 +0000

Restructure checking for, and warning on, lifetime extension.This change implements C++ DR1696, which makes initialization of areference member of a class from a temporary object ill-formed. Thestandard wording here is imprecise, but we interpret it as meaning thatany time a mem-initializer would result in lifetime extension, theprogram is ill-formed.llvm-svn: 337226 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/warn-dangling-field.cpp

e3b28bc3 - Move detection of reference members binding to temporaries from building of

Wed, 12 Jun 2013 21:51:50 +0000

Move detection of reference members binding to temporaries from building ofCXXCtorInitializers to the point where we perform the questionable lifetimeextension. This exposed a selection of false negatives in the warning.llvm-svn: 183869 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/warn-dangling-field.cpp

d551d4e1 - Teach -Wdangling-field to warn about temporaries bound to references as

Sat, 03 Sep 2011 02:21:57 +0000

Teach -Wdangling-field to warn about temporaries bound to references aswell.Also, clean up the flow of the code a bit, and factor things morenicely.Finally, add the test case that was missing from my previouscommit (sorry), with new tests added to cover temporaries and other funcases.llvm-svn: 139077 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/warn-dangling-field.cpp