VERSYM_VERSION 407 third_party/tcmalloc/chromium/src/base/elf_mem_image.cc const ElfW(Versym) version_index = version_symbol[0] & VERSYM_VERSION; VERSYM_VERSION 407 third_party/tcmalloc/vendor/src/base/elf_mem_image.cc const ElfW(Versym) version_index = version_symbol[0] & VERSYM_VERSION;