Adrian Prantl d963a7c398 Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC ...

The code in LLDB assumes that CompilerType and friends use the size 0
as a sentinel value to signal an error. This works for C++, where no
zero-sized type exists, but in many other programming languages
(including I believe C) types of size zero are possible and even
common. This is a particular pain point in swift-lldb, where extra
code exists to double-check that a type is *really* of size zero and
not an error at various locations.

To remedy this situation, this patch starts by converting
CompilerType::getBitSize() and getByteSize() to return an optional
result. To avoid wasting space, I hand-rolled my own optional data
type assuming that no type is larger than what fits into 63
bits. Follow-up patches would make similar changes to the ValueObject
hierarchy.

rdar://problem/47178964

Differential Revision: https://reviews.llvm.org/D56688

llvm-svn: 351214

2019-01-15 18:07:52 +00:00

..

BlockPointer.cpp

Remove header grouping comments.

2018-11-11 23:17:06 +00:00

BlockPointer.h

…

CMakeLists.txt

[PDB] Introduce MSVCUndecoratedNameParser

2018-11-06 08:02:55 +00:00

CPlusPlusLanguage.cpp

Simplify Boolean expressions

2018-12-15 00:15:33 +00:00

CPlusPlusLanguage.h

Remove header grouping comments.

2018-11-11 23:17:06 +00:00

CPlusPlusNameParser.cpp

Reflow paragraphs in comments.

2018-04-30 16:49:04 +00:00

CPlusPlusNameParser.h

Remove header grouping comments.

2018-11-11 23:17:06 +00:00

CxxStringTypes.cpp

Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC

2019-01-15 18:07:52 +00:00

CxxStringTypes.h

Move classes from Core -> Utility.

2017-02-02 21:39:50 +00:00

LibCxx.cpp

Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC

2019-01-15 18:07:52 +00:00

LibCxx.h

[DataFormatters] Adding formatters for libc++ std::u16string and std::u32string

2018-10-26 17:00:48 +00:00

LibCxxAtomic.cpp

…

LibCxxAtomic.h

Move classes from Core -> Utility.

2017-02-02 21:39:50 +00:00

LibCxxBitset.cpp

Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC

2019-01-15 18:07:52 +00:00

LibCxxInitializerList.cpp

Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC

2019-01-15 18:07:52 +00:00

LibCxxList.cpp

Remove header grouping comments.

2018-11-11 23:17:06 +00:00

LibCxxMap.cpp

Remove header grouping comments.

2018-11-11 23:17:06 +00:00

LibCxxOptional.cpp

Undoing first commit which added a space to a comment

2018-09-10 23:18:32 +00:00

LibCxxQueue.cpp

Add data formatter for libc++ std::queue

2017-11-01 15:52:08 +00:00

LibCxxTuple.cpp

Update tuple/list/deque data formatters to work with newest libc++

2017-11-07 22:17:29 +00:00

LibCxxUnorderedMap.cpp

Remove header grouping comments.

2018-11-11 23:17:06 +00:00

LibCxxVariant.cpp

[lldb] NFC: Remove the extra ';'

2018-11-16 13:01:57 +00:00

LibCxxVariant.h

[DataFormatters] Add formatter for C++17 std::variant

2018-09-19 18:07:05 +00:00

LibCxxVector.cpp

Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC

2019-01-15 18:07:52 +00:00

LibStdcpp.cpp

Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC

2019-01-15 18:07:52 +00:00

LibStdcpp.h

Move classes from Core -> Utility.

2017-02-02 21:39:50 +00:00

LibStdcppTuple.cpp

Stop calling ValueObject::SetName from synthetic child providers

2017-03-31 20:48:00 +00:00

LibStdcppUniquePointer.cpp

Fix tuple getter in std unique pointer pretty-printer

2018-06-11 14:52:52 +00:00

MSVCUndecoratedNameParser.cpp

Add a break to avoid an unannotated fall-through.

2018-11-07 05:17:31 +00:00

MSVCUndecoratedNameParser.h

[PDB] Introduce MSVCUndecoratedNameParser

2018-11-06 08:02:55 +00:00