Works with -g but not -O0

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Works with -g but not -O0

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Hi,
I am converting a very large program from Absoft. I am using the -save and -zero options. When I compile with -g it works fine. When I compile with -O0 which should also turn off the optimization, my program hangs (as it does with other optimizations). What else does -g do that -O0 does not do?

Thanks,
David

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