[Bug sanitizer/55975] asan does not work with 46 bit address space on PowerPC64

[kcc at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55975



--- Comment #14 from Kostya Serebryany <kcc at gcc dot gnu.org> 2013-01-18 
08:26:00 UTC ---

Because of this: 

#define kLowShadowBeg   SHADOW_OFFSET

#define kLowShadowEnd   MEM_TO_SHADOW(kLowMemEnd)



If we leave kLowShadowEnd as before, we will have too little shadow for the 44

bit address space. 



Maybe it's still better to make kHighMemEnd dynamic...