Bulletin number:  287
Products affected: D711D D611A D511A
Description: getchar/putchar can cause lockups
Component: compiler
Date: Mon May 21 15:06:45 BST 1990
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The standard I/O routines getchar and putchar are present in the C
run-time library file as debugging routines as well as in stdio.h in
macro form. stdio.h must be included to ensure use of the correct
versions. If this is not done then the debugging versions will be used,
which may result in the program locking up.