[LLVMbugs] [Bug 16277] -fsanitize=address doesn't obey aligned(256)

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Jun 26 02:54:52 PDT 2013


Kostya Serebryany <kcc at google.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Kostya Serebryany <kcc at google.com> ---
r184928 disables the instrumentation of AllocaInstr with alignment more than
the redzone size (i.e. > 32)

This is a workaround, not a full fix. 
Full fix will require to create 256-byte redzones for 256-aligned allocas,
which in turn requires more expensive redzone (un)poisoning. 
Since this is an extremely rare case, I am not planing any work on it in near

I'll close this bug now, the larger problem is tracked at 

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