Please take a look at the trivial example in this thread as just an illustration. The point being whether it is possible for you to consider standard Fortran IEEE-related intrinsics toward SET_HALTING_MODE, IEEE_SET_FLAG/IEEE_GET_FLAG, etc… A judicious use of these intrinscis can enable you to trap the floating-point exceptions or even break at the right location(s) that may be deep inside some number-crunching library(ies).
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