Index: sandbox/linux/services/syscall_wrappers_unittest.cc |
diff --git a/sandbox/linux/services/syscall_wrappers_unittest.cc b/sandbox/linux/services/syscall_wrappers_unittest.cc |
index 861dd5feb1c02aa7ece96186694f6b7b675a19f1..79ed63d68910ab0e64f134165a6bda9878856424 100644 |
--- a/sandbox/linux/services/syscall_wrappers_unittest.cc |
+++ b/sandbox/linux/services/syscall_wrappers_unittest.cc |
@@ -39,14 +39,18 @@ TEST(SyscallWrappers, CloneParentSettid) { |
} |
TEST(SyscallWrappers, CloneChildSettid) { |
+ // Warm up the libc pid cache, if there is one. |
+ ASSERT_EQ(sys_getpid(), getpid()); |
+ |
pid_t ctid = 0; |
pid_t pid = |
sys_clone(CLONE_CHILD_SETTID | SIGCHLD, nullptr, nullptr, &ctid, nullptr); |
const int kSuccessExit = 0; |
if (0 == pid) { |
- // In child. |
- if (sys_getpid() == ctid) |
+ // In child. Check both the raw getpid syscall and the libc getpid wrapper |
+ // (which may rely on a pid cache). |
+ if (sys_getpid() == ctid && getpid() == ctid) |
_exit(kSuccessExit); |
_exit(1); |
} |