c1d55d26d3
We have a handful of places in LLDB where we try to outsmart the logic in Mangled to determine whether a string is mangled or not. There's at least one place (*) where we are getting this wrong and causes a subtle bug. The `cstring_is_mangled` is cheap enough that we should always rely on it to determine whether a string is mangled or not. (*) `ObjectFileMachO` assumes that a symbol that starts with a double underscore (such as `__pthread_kill`) is mangled. That's mostly harmless, until you use `function.name-without-args` in the frame format. The formatter calls `Symbol::GetNameNoArguments()` which is a wrapper around `Mangled::GetName(ePreferDemangledWithoutArguments)`. The latter will first try using the appropriate language plugin to get the demangled name without arguments, and if that fails, falls back to returning the demangled name. Because we forced Mangled to treat the symbol as a mangled name (even though it's not) there's no demangled name. The result is that frames don't show any symbol at all. Differential revision: https://reviews.llvm.org/D148846
The LLVM Compiler Infrastructure
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.
Getting the Source Code and Building LLVM
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.
Getting in touch
Join the LLVM Discourse forums, Discord chat, or #llvm IRC channel on OFTC.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.