[Clang] Fix clang crash for fopenmp statement(for) inside lambda function (#146772) C++ range-for statements introduce implicit variables such as `__range`, `__begin`, and `__end`. When such a loop appears inside an OpenMP loop-based directive (e.g. `#pragma omp for`) within a lambda, these implicit variables were not emitted before OpenMP privatization logic ran. OMPLoopScope assumes that loop-related variables are already present in LocalDeclMap and temporarily overrides their addresses. Since the range-for implicit variables had not yet been emitted, they were treated as newly introduced entries and later erased during restore(), leading to missing mappings and a crash during codegen. Fix this by emitting the range-for implicit variables before OpenMP privatization (setVarAddr/apply), ensuring that existing mappings are correctly overridden and restored. This fixes #146335
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.