[all-commits] [llvm/llvm-project] 7014a1: [profile] Skip mmap() if there are no counters

[Vedant Kumar via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7014a101614367e05cec1ba72a6be07eb173b304
      https://github.com/llvm/llvm-project/commit/7014a101614367e05cec1ba72a6be07eb173b304
  Author: Vedant Kumar <vsk at apple.com>
  Date:   2021-05-19 (Wed, 19 May 2021)

  Changed paths:
    M compiler-rt/lib/profile/InstrProfilingFile.c
    A compiler-rt/test/profile/ContinuousSyncMode/image-with-no-counters.c

  Log Message:
  -----------
  [profile] Skip mmap() if there are no counters

If there are no counters, an mmap() of the counters section would fail
due to the size argument being too small (EINVAL).

rdar://78175925

Differential Revision: https://reviews.llvm.org/D102735