[Haskell-cafe] mallocForeignPtrArray with check against buffer overflows

Joachim Durchholz jo at durchholz.org
Fri Apr 27 04:42:41 UTC 2018

Am 26.04.2018 um 08:50 schrieb Henning Thielemann:
> I like to test whether some low-level routines overwrite non-allocated 
> memory area. On the Amiga there was the program Mungwall that surrounded 
> memory blocks with some byte patterns at allocation and checked the 
> integrity of those patterns at deallocation.
Today, it's called a "canary value". Most C compilers have an option to 
activate this mode for all allocations.
I don't know whether GHC's native backend has such an option, but the 
LLVM backend should.


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