[Mpi-forum] Compile problems with examples in MPI Standard

Dries Kimpe dkimpe at mcs.anl.gov
Tue Jul 24 10:52:02 CDT 2012

This page might explain it:

"Equivalence" refers to the following key definition:

An lvalue [see question 2.5] of type array-of-T which appears in an
expression decays (with three exceptions) into a pointer to its first
element; the type of the resultant pointer is pointer-to-T.
(The exceptions are when the array is the operand of a sizeof or &
operator, or is a literal string initializer for a character array.)

In this case, we're passing the argument to operator &, which disables the
automatic decay.

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