Changes in p5.cpp

afe48f9d - Fold -Wreturn-stack-address into general initialization lifetime

Mon, 23 Jul 2018 21:21:22 +0000

Fold -Wreturn-stack-address into general initialization lifetimechecking.llvm-svn: 337743 List of files: /llvm-project-15.0.7/clang/test/CXX/temp/temp.param/p5.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/CXX/temp/temp.param/p5.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/CXX/temp/temp.param/p5.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/CXX/temp/temp.param/p5.cpp

d6a15082 - PR23135: Don't instantiate constexpr functions referenced in unevaluated operands where possible.

Sat, 07 Jan 2017 00:48:55 +0000

PR23135: Don't instantiate constexpr functions referenced in unevaluated operands where possible.This implements something like the current direction of DR1581: we use a narrowsyntactic check to determine the set of places where a constant expressioncould be evaluated, and only instantiate a constexpr function or variable ifit's referenced in one of those contexts, or is odr-used.It's not yet clear whether this is the right set of syntactic locations; wecurrently consider all contexts within templates that would result in odr-usesafter instantiation, and contexts within list-initialization (narrowingconversions take another victim...), as requiring instantiation. We could inprinciple restrict the former cases more (only const integral / referencevariable initializers, and contexts in which a constant expression is required,perhaps). However, this is sufficient to allow us to accept libstdc++ code,which relies on GCC's behavior (which appears to be somewhat similar to thisapproach).llvm-svn: 291318 List of files: /llvm-project-15.0.7/clang/test/CXX/temp/temp.param/p5.cpp

d60b82f9 - Handle use of default member initializers before end of outermost class

Mon, 17 Nov 2014 23:36:45 +0000

Handle use of default member initializers before end of outermost classSpecifically, when we have this situation: struct A { template struct B { int m1 = sizeof(A); }; B m2; };We can't parse m1's initializer eagerly because we need A to becomplete. Therefore we wait until the end of A's class scope to parseit. However, we can trigger instantiation of B before the end of A,which will attempt to instantiate the field decls eagerly, and it wouldbuild a bad field decl instantiation that said it had an initializer butactually lacked one.Fixed by deferring instantiation of default member initializers untilthey are needed during constructor analysis. This addresses a longstanding FIXME in the code.Fixes PR19195.Reviewed By: rsmithDifferential Revision: http://reviews.llvm.org/D5690llvm-svn: 222192 List of files: /llvm-project-15.0.7/clang/test/CXX/temp/temp.param/p5.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/CXX/temp/temp.param/p5.cpp

c6e68daa - Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive.

Fri, 19 Oct 2012 12:44:48 +0000

Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive.llvm-svn: 166280 List of files: /llvm-project-15.0.7/clang/test/CXX/temp/temp.param/p5.cpp

d0e1c95d - Implement [temp.param]p5: the top-level cv-qualifiers on a non-type template

Tue, 13 Mar 2012 07:21:50 +0000

Implement [temp.param]p5: the top-level cv-qualifiers on a non-type templateparameter's declaration are ignored when determining the parameter's type.llvm-svn: 152619 List of files: /llvm-project-15.0.7/clang/test/CXX/temp/temp.param/p5.cpp