http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59275
--- Comment #1 from Kostya Serebryany <kcc at gcc dot gnu.org> --- Not all of these options are "supported" -- some are for internal use only and may change or disappear at any time. The supported ones are described here: https://code.google.com/p/address-sanitizer/wiki/Flags https://code.google.com/p/thread-sanitizer/wiki/Flags Note that these flags may change too, and so if you document them in gcc docs, someone will need to keep the docs in sync with the updates.
