[PATCH, rs6000] Fix address sanitizer for powerpc64. This patch fixes problems that asan has on powerpc64 running on some old kernels and also very new kernels.
See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85394 and https://github.com/google/sanitizers/issues/933 for more information. Bootstrapped and tested on powerpc64le-unknown-linux-gnu and powerpc64be-unknown-linux-gnu with no regressions. Is this ok for trunk? 2018-04-17 Bill Seurer <seu...@linux.vnet.ibm.com> PR sanitizer/85389 * asan/asan_allocator.h: Switch to use dynamic base for the allocator region. Index: libsanitizer/asan/asan_allocator.h =================================================================== --- libsanitizer/asan/asan_allocator.h (revision 259447) +++ libsanitizer/asan/asan_allocator.h (working copy) @@ -122,7 +122,7 @@ const uptr kAllocatorSpace = ~(uptr)0; const uptr kAllocatorSize = 0x40000000000ULL; // 4T. typedef DefaultSizeClassMap SizeClassMap; # elif defined(__powerpc64__) -const uptr kAllocatorSpace = 0xa0000000000ULL; +const uptr kAllocatorSpace = ~(uptr)0; const uptr kAllocatorSize = 0x20000000000ULL; // 2T. typedef DefaultSizeClassMap SizeClassMap; # elif defined(__aarch64__) && SANITIZER_ANDROID -- -Bill Seurer
