1 // RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s -o %t
2 // RUN: rm -rf %t-dir
3 // RUN: mkdir -p %t-dir && cd %t-dir
4 // RUN: %env_asan_opts=coverage=1:verbosity=1 %run %t 2>&1 | FileCheck %s
5 //
6 // UNSUPPORTED: android
7 //
8 // Ideally a forked-subprocess should only report it's own coverage,
9 // not parent's one. But trace-pc-guard currently does nothing special for fork,
10 // and thus this test is relaxed.
11 
12 #include <stdio.h>
13 #include <string.h>
14 #include <unistd.h>
15 
16 __attribute__((noinline))
17 void foo() { printf("foo\n"); }
18 
19 __attribute__((noinline))
20 void bar() { printf("bar\n"); }
21 
22 __attribute__((noinline))
23 void baz() { printf("baz\n"); }
24 
25 int main(int argc, char **argv) {
26   pid_t child_pid = fork();
27   if (child_pid == 0) {
28     fprintf(stderr, "Child PID: %d\n", getpid());
29     baz();
30   } else {
31     fprintf(stderr, "Parent PID: %d\n", getpid());
32     foo();
33     bar();
34   }
35   return 0;
36 }
37 
38 // CHECK-DAG: Child PID: [[ChildPID:[0-9]+]]
39 // CHECK-DAG: [[ChildPID]].sancov: {{.*}} PCs written
40 // CHECK-DAG: Parent PID: [[ParentPID:[0-9]+]]
41 // CHECK-DAG: [[ParentPID]].sancov: 3 PCs written
42