Recent changes in GetPcSpBp() (libsanitizer/asan/asan_linux.cc) made it impossible to build 4.10.0-alpha20140525 snapshot for powerpc targets. The proposed patch disables building libsanitizer for powerpc*-*-linux* in addition to already disabled powerpc*le-*-linux* until the smarter solution will emerge.
The actual issue preventing ASAN from porting to PPC seems to be inability to retrieve values of PC and BP on this architecture.
--- gcc-4.10-20140525/libsanitizer/configure.tgt~ 2014-05-26 17:59:21.224116974 +0800 +++ gcc-4.10-20140525/libsanitizer/configure.tgt 2014-05-26 18:00:03.048478781 +0800 @@ -26,11 +26,9 @@ LSAN_SUPPORTED=yes fi ;; - powerpc*le-*-linux*) + powerpc*-*-linux* | powerpc*le-*-linux*) UNSUPPORTED=1 ;; - powerpc*-*-linux*) - ;; sparc*-*-linux*) ;; arm*-*-linux*)
