[lldb] Add support for PC-less scripted frames (#170805) Scripted frames that materialize Python functions or other non-native code are PC-less by design, meaning they don't have valid program counter values. Previously, these frames would display invalid addresses (`0xffffffffffffffff`) in backtrace output. This patch updates `FormatEntity` to detect and suppress invalid address display for PC-less frames, adds fallback to frame methods when symbol context is unavailable, and modifies `StackFrame::GetSymbolContext` to skip PC-based symbol resolution for invalid addresses. The changes enable PC-less frames to display cleanly with proper function names, file paths, and line numbers, and allow for source display of foreign sources (like Python). Includes comprehensive test coverage demonstrating frames pointing to Python source files. Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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.