[all-commits] [llvm/llvm-project] 48ad42: [BOLT] Fix use-after-free in RewriteInstance::mapC...

[Job Noorman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 48ad4296f7847db15b6bee7a465fc2cbe687ba6a
      https://github.com/llvm/llvm-project/commit/48ad4296f7847db15b6bee7a465fc2cbe687ba6a
  Author: Job Noorman <jnoorman at igalia.com>
  Date:   2023-04-17 (Mon, 17 Apr 2023)

  Changed paths:
    M bolt/lib/Rewrite/RewriteInstance.cpp

  Log Message:
  -----------
  [BOLT] Fix use-after-free in RewriteInstance::mapCodeSections

When a cold function is too large, its section gets deregistered.
However, the section is still dereferenced later to get its RuntimeDyld
ID. This patch moves the deregistration to after the last dereference.

Reviewed By: Amir

Differential Revision: https://reviews.llvm.org/D148427