[all-commits] [llvm/llvm-project] de6f72: [sanitizer_common] Fix readlink error handling in ...

[Rich Lowe via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: de6f7252daf5da7fffa504a4c0106f377dbe76a0
      https://github.com/llvm/llvm-project/commit/de6f7252daf5da7fffa504a4c0106f377dbe76a0
  Author: Rich Lowe <richlowe at richlowe.net>
  Date:   2021-11-02 (Tue, 02 Nov 2021)

  Changed paths:
    M compiler-rt/lib/sanitizer_common/sanitizer_procmaps_solaris.cpp

  Log Message:
  -----------
  [sanitizer_common] Fix readlink error handling in sanitizer_procmaps_solaris.cpp

As pointed out in Bug 52371, the Solaris version of
`MemoryMappingLayout::Next` completely failed to handle `readlink` errors
or properly NUL-terminate the result.

This patch fixes this.  Originally provided in the PR with slight
formatting changes.

Tested on `amd64-pc-solaris2.11`.

Differential Revision: https://reviews.llvm.org/D112998