[Bug fortran/98701] I compiled a program with gfortran on Mac (Big Sur, version 11.1) and g77 on Windows 10. I get two very different results for identical input files with the results from the one compiled by gfortran being wrong.

[Bahram.shahrooz at uc dot edu via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98701

--- Comment #6 from Bahram.shahrooz at uc dot edu ---
I get wrong answers doing this:

gfortran FiberAnalysis.f -o FiberAnalysis

I get correct answers doing this:

gfortran FiberAnalysis.f -fcheck=all -ffpe-trap=zero,invalid -o FiberAnalysis

   Moment      Axial_Load
   3244.08910    -215.38970
   3432.22199    -190.65966
   3594.93500    -168.86785
   3734.50302    -149.77519
   3842.77168    -134.14558
   3986.24344    -114.80934
   4115.25069     -97.21038
   4230.37015     -81.27311
   4323.74191     -67.84354
   4442.09009     -51.57463
   4551.67144     -36.41379
   4653.40529     -22.24901
   4748.46682      -8.91886
   4844.11684       4.77310
   4933.55651      17.64818
   5017.35901      29.77892
   5097.44257      41.41472
   5193.49624      55.17913
   5275.53074      67.17330
   5351.16344      78.34124