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[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     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This commit is contained in:
Fangrui Song 2020-07-18 11:10:18 -07:00
parent e79a86e45b
commit ca1cc5c4e0
1 changed files with 5 additions and 5 deletions
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10
compiler-rt/test/profile/Posix/gcov-fork.c
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@ -1,10 +1,6 @@
/// A basic block with fork/exec* is split. .gcda is flushed immediately before
/// fork/exec* so the lines before fork are counted once while succeeding
/// lines are counted twice.
// UNSUPPORTED: darwin
/// FIXME: http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/50913
// UNSUPPORTED: host-byteorder-big-endian
// RUN: mkdir -p %t.d && cd %t.d
// RUN: %clang --coverage %s -o %t
// RUN: test -f gcov-fork.gcno
@ -17,8 +13,12 @@
void func1() {} // CHECK: 1: [[#@LINE]]:void func1()
void func2() {} // CHECK-NEXT: 2: [[#@LINE]]:
int main(void) { // CHECK-NEXT: 1: [[#@LINE]]:
int status; // CHECK-NEXT: -: [[#@LINE]]:
func1(); // CHECK-NEXT: 1: [[#@LINE]]:
if (fork() == -1) return 1; // CHECK-NEXT: 1: [[#@LINE]]:
pid_t pid = fork(); // CHECK-NEXT: 1: [[#@LINE]]:
if (pid == -1) return 1; // CHECK-NEXT: 2: [[#@LINE]]:
if (pid) // CHECK-NEXT: 2: [[#@LINE]]:
wait(&status); // CHECK-NEXT: 1: [[#@LINE]]:
func2(); // CHECK-NEXT: 2: [[#@LINE]]:
return 0; // CHECK-NEXT: 2: [[#@LINE]]:
}