202. Compilers may accept extensions by default but have options to flag non-standard code.#

topic: Compiling

Note

This tip is a draft1.

Compilers may accept extensions by default but have options to flag non-standard code, such as -std=[f2018, f2008, f2003, f95] for gfortran and -stand:[f18, f08, f03, f95, f90] for ifort. For ifort, -standard-semantics causes the program to behave as the standard requires.

1

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