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Using and Porting GNU Fortran

15.3.39 Better Pedantic Compilation

g77 needs to support `-fpedantic' more thoroughly, and use it only to generate warnings instead of rejecting constructs outright. Have it warn: if a variable that dimensions an array is not a dummy or placed explicitly in COMMON (F77 does not allow it to be placed in COMMON via EQUIVALENCE); if specification statements follow statement-function-definition statements; about all sorts of syntactic extensions.