[all-commits] [llvm/llvm-project] 204c12: [DFSan] Print an error before calling null extern_...

[Andrew Browne via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 204c12eef9e1ab9920879480223cfc59429ef9bb
      https://github.com/llvm/llvm-project/commit/204c12eef9e1ab9920879480223cfc59429ef9bb
  Author: Andrew Browne <browneee at google.com>
  Date:   2022-04-19 (Tue, 19 Apr 2022)

  Changed paths:
    M compiler-rt/lib/dfsan/dfsan.cpp
    M llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
    M llvm/test/Instrumentation/DataFlowSanitizer/extern_weak.ll

  Log Message:
  -----------
  [DFSan] Print an error before calling null extern_weak functions, incase dfsan instrumentation optimized out a null check.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D124051