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2025-07-21[LLDB] Add formatters for MSVC STL std::optional (#149545)nerix
Adds synthetic children for `std::optional` from MSVC's STL. Most of the machinery for `std::optional` is already there. Towards #24834.
2025-05-30[LLDB] Avoid crashes when inspecting MSVC STL types (#140761)nerix
When inspecting/printing types from MSVC's STL, LLDB would crash because it assumes these types were from libstdc++. Specifically, `std::shared_ptr` and `std::optional` would crash because of a null pointer dereference. I added a minimal test that tests the types with C++ helpers for libstdc++ (only tests for crashes). - Fixes #115216 - Fixes #120310 This still has one unresolved discussion: What about MS STL types? This is https://github.com/llvm/llvm-project/issues/24834, but there was a bit of discussion in #120310 as well. The main issue is that MSVC's STL uses the same type names as libstdc++ (i.e. neither uses an inline namespace like libc++ for some types).
2025-05-08[lldb][DataFormatters] Change ExtractIndexFromString to return std::optional ↵Charles Zablit
(#138297) This PR is in continuation of https://github.com/llvm/llvm-project/pull/136693.
2025-04-30[lldb] Upgrade `GetIndexOfChildWithName` to use `llvm::Expected` (#136693)Charles Zablit
This patch replaces the use of `UINT32_MAX` as the error return value of `GetIndexOfChildWithName` with `llvm::Expected`. # Tasks to do in another PR 1. Replace `CalculateNumChildrenIgnoringErrors` with `CalculateNumChildren`. See [this comment](https://github.com/llvm/llvm-project/pull/136693#discussion_r2056319358). 2. Update `lldb_private::formatters::ExtractIndexFromString` to use `llvm::Expected`. See [this comment](https://github.com/llvm/llvm-project/pull/136693#discussion_r2054217536). 3. Create a new class which carries both user and internal errors. See [this comment](https://github.com/llvm/llvm-project/pull/136693#discussion_r2056439608).
2025-02-17[lldb] Provide default impl for MightHaveChildren (NFC) (#119977)Dave Lee
The vast majority of `SyntheticChildrenFrontEnd` subclasses provide children, and as such implement `MightHaveChildren` with a constant value of `true`. This change makes `true` the default value. With this change, `MightHaveChildren` only needs to be implemented by synthetic providers that can return `false`, which is only 3 subclasses.
2024-09-03[lldb] Support "dereferencing" std::optional in `frame var` (#107077)Pavel Labath
2024-03-08Change GetNumChildren()/CalculateNumChildren() methods return llvm::Expected ↵Adrian Prantl
(#84219) Change GetNumChildren()/CalculateNumChildren() methods return llvm::Expected This is an NFC change that does not yet add any error handling or change any code to return any errors. This is the second big change in the patch series started with https://github.com/llvm/llvm-project/pull/83501 A follow-up PR will wire up error handling.
2024-03-08Revert "Change GetNumChildren()/CalculateNumChildren() methods return ↵Florian Mayer
llvm::Expected (#84219)" This reverts commit 99118c809367d518ffe4de60c16da953744b68b9.
2024-03-08Change GetNumChildren()/CalculateNumChildren() methods return llvm::Expected ↵Adrian Prantl
(#84219) Change GetNumChildren()/CalculateNumChildren() methods return llvm::Expected This is an NFC change that does not yet add any error handling or change any code to return any errors. This is the second big change in the patch series started with https://github.com/llvm/llvm-project/pull/83501 A follow-up PR will wire up error handling.
2024-03-07Change GetChildAtIndex to take a uint32_tAdrian Prantl
2024-03-07Change the return type of SyntheticFrontend::CalculateNumChildren to int32_tAdrian Prantl
This way it is consistent with ValueObject and TypeSystem.
2024-02-08[lldb][TypeSynthetic][NFC] Make SyntheticChildrenFrontend::Update() return ↵Michael Buch
an enum (#80167) This patch changes the return value of `SyntheticChildrenFrontend::Update` to a scoped enum that aims to describe what the return value means.
2023-06-13[lldb] Default can_create to true in GetChildAtIndex (NFC)Dave Lee
Existing callers of `GetChildAtIndex` pass true for can_create. This change makes true the default value, callers don't have to pass an opaque true. See also D151966 for the same change to `GetChildMemberWithName`. Differential Revision: https://reviews.llvm.org/D152031
2023-06-13[lldb] Default can_create to true in GetChildMemberWithName (NFC)Dave Lee
It turns out all existing callers of `GetChildMemberWithName` pass true for `can_create`. This change makes `true` the default value, callers don't have to pass an opaque true. Differential Revision: https://reviews.llvm.org/D151966
2023-05-31[lldb] Take StringRef name in GetChildMemberWithName (NFC)Dave Lee
`GetChildMemberWithName` does not need a `ConstString`. This change makes the function take a `StringRef` instead, which alleviates the need for callers to construct a `ConstString`. I don't expect this change to improve performance, only ergonomics. This is in support of Alex's effort to replace `ConstString` where appropriate. There are related `ValueObject` functions that can also be changed, if this is accepted. Differential Revision: https://reviews.llvm.org/D151615
2021-12-09Unify libstdcpp and libcxx formatters for `std::optional`Alisamar Husain
Reviewed By: wallace Differential Revision: https://reviews.llvm.org/D115178