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From: Jay Sulzmann <jsulzmann@HBS-INC.COM> > I'm not sure I agree here is my favorite horror story about compiler options (this actually happened to me about 20 years ago). Program A was compiled with the mainframe option NOTRUNC and had a dataitem FLAG PIC S9(4) COMP-4. A would MOVE -32768 to FLAG, then call B which had the same dataitem defined in linkage, but was compiled with TRUNC. B could then reset the flag by MOVE FLAG TO FLAG, which would get rid of the sign bit. Very clever, and very dangerous. (I was involved with porting the programs to another system that did not have the NOTRUNC/TRUNC options).
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