sys_ptrace       1040 third_party/tcmalloc/chromium/src/heap-checker.cc #define sys_ptrace(r, p, a, d)  syscall(SYS_ptrace, (r), (p), (a), (d))
sys_ptrace       1040 third_party/tcmalloc/vendor/src/heap-checker.cc #define sys_ptrace(r, p, a, d)  syscall(SYS_ptrace, (r), (p), (a), (d))