[all-commits] [llvm/llvm-project] ca1cc5: [gcov][test] Call wait() to make gcov-fork.c reliable

[Fangrui Song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ca1cc5c4e067d496e92e775bd0ac30c1b775bb62
      https://github.com/llvm/llvm-project/commit/ca1cc5c4e067d496e92e775bd0ac30c1b775bb62
  Author: Fangrui Song <i at maskray.me>
  Date:   2020-07-18 (Sat, 18 Jul 2020)

  Changed paths:
    M compiler-rt/test/profile/Posix/gcov-fork.c

  Log Message:
  -----------
  [gcov][test] Call wait() to make gcov-fork.c reliable

If the parent exit before the child, the line counts might be 1.

next:18'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          26:  1: 21: if (fork() == -1) return 1; // CHECK-NEXT: 1: [[#@LINE]]:
next:18'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          27:  1: 22: func2(); // CHECK-NEXT: 2: [[#@LINE]]:
next:18'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          28:  1: 23: return 0; // CHECK-NEXT: 2: [[#@LINE]]:
next:18'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~