VG_USERREQ_TOOL_BASE   80 base/third_party/valgrind/memcheck.h       VG_USERREQ__MAKE_MEM_NOACCESS = VG_USERREQ_TOOL_BASE('M','C'),
VG_USERREQ_TOOL_BASE  101 base/third_party/valgrind/memcheck.h          = VG_USERREQ_TOOL_BASE('M','C') + 256
VG_USERREQ_TOOL_BASE 4270 base/third_party/valgrind/valgrind.h    (VG_USERREQ_TOOL_BASE(a,b) == ((v) & 0xffff0000))
VG_USERREQ_TOOL_BASE 4086 third_party/re2/util/valgrind.h    (VG_USERREQ_TOOL_BASE(a,b) == ((v) & 0xffff0000))
VG_USERREQ_TOOL_BASE 3582 third_party/tcmalloc/vendor/src/third_party/valgrind.h    (VG_USERREQ_TOOL_BASE(a,b) == ((v) & 0xffff0000))