llvm/llvm-project

[MIRSampleProfile] nullptr deref crash when profile sample use file not found

Open

#189,764 创建于 2026年3月31日

在 GitHub 查看
 (7 评论) (0 反应) (0 负责人)C++ (26,378 star) (10,782 fork)batch import
PGOcrash-on-invalidgood first issuellvm:codegen

描述

Trying to reproduce https://github.com/llvm/llvm-project/issues/188897, I failed to pass a valid file for -fprofile-sample-use=; this caused a crash because Reader is nullptr in MIRProfileLoader::runOnFunction. Should be easy to guard against this I think. cc @htyu (author of 958a3d8e2dec95a878dfc9d823861b3a6c674534)

贡献者指南