Fix a race between fork/trace_me and first ptrace request
- That first ptrace may fail if ltrace is too quick
diff --git a/common.h b/common.h
index 715898d..fa80076 100644
--- a/common.h
+++ b/common.h
@@ -329,6 +329,7 @@
extern int process_stopped(pid_t pid);
extern enum process_status process_status(pid_t pid);
extern void trace_set_options(Process * proc, pid_t pid);
+extern void wait_for_proc(pid_t pid);
extern void trace_me(void);
extern int trace_pid(pid_t pid);
extern void untrace_pid(pid_t pid);