[Clang][Sema] fix outline member function template with default align crash (#78400) Try to fix [issue](https://github.com/llvm/llvm-project/issues/68490) and some extented problem. Root cause of current issue is that error handling in instantiation of function parameter with default initialization on sizeof or align expression. When instance an out-of-line template member function, depth of `TemplateTypeParmDecl` in default initialization doesn't change while depth of other template parameter does and this will lead to some template parameter uninstanced. Also, sometime it will leader to wrong instantiation when it uses the template parameter of class. Fix it by add template args of context when it's out-of-line. This will make `MultiLevelTemplateArgumentList::getNumLevels` matching the depth of template parameter. Testcase with some `static_assert` demonstrates the template parameter has been instanced correctly. Co-authored-by: huqizhi <836744285@qq.com>
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.