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VMS Help CC, Messages, ALIGNCONFLICT1 *Conan The Librarian |
Message <Context> the address "<expr>" has alignment of
<align> which is less than the alignment requirements
of the pointer type it is cast to. Dereferencing the
resulting pointer may cause an alignment fault.
Description The compiler has detected a situation where an
address is being cast to a pointer type with a
greater alignment requirement than the type of the
address expression implies. A later dereference of
this pointer type value could cause an alignment
fault.
User Action There are a number of possible actions. The best is
to correct the condition that is causing the source
to have the wrong alignment, as access to an
unaligned data structure involves additional run-time
overhead. Other options would be to change the type
of the pointer used in the cast such that its
referenced type has the __unaligned type qualifier,
or use the compiler option that tells the compiler to
assume all pointer references are unaligned. It is
also possible to cast the address expression to (void
*) before casting it to the specified type to silence
this message. However, that solution will not
correct any unaligned access.
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