6 usability improvements in GCC 15 | Red Hat Developer

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This might be a good reference for Fortran compiler developers @certik .

The infinite-loop detecting and visualizing are very interesting. If only similar detection were available for F77 code with tons of GOTO’s. I had to find many of them manually when carving PRIMA out of Powell’s F77 codebase with 249 GOTO’s. It was time-consuming and, indeed, depressing.

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Just for the sake of curiosity, do those better warning messages work for Fortran, or are they limited to C/C++?

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I have just tried -fanalyzer in Fedora 42 with GFortran 15.0.1. The following code does not generate any warning:

do while(.true.)
  print *, "-"
end do
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