NULL need not be all bits 0
D. Hugh Redelmeier
Mon, 25 Oct 1999 11:38:19 -0400 (EDT)
This is portability nitpicking.
It is a little known fact that the representation of a NULL of a
particular pointer type may not have all bits 0. So clearing a chunk
of memory to zero is not guaranteed to initialize any pointer objects
in that memory to NULL.
gnupg-1.0.0/mpi/mpi-mpow.c" line 90:
G = m_alloc_clear( (1<<k) * sizeof *G );
The code assumes that this initializes an array of MPI pointers to
NULL. This works on almost all machines, but is not guaranteed to
work by the C standard.
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