[cat199]

f77/f2c - you'd be surprised

often gets pulled in if other fortran (gfortran usually on a linux) is not available when building certain numerical software which in turn relies on netlib.org open fortran code, which in turn is written in fortran77

these libraries are give-or-take at the core of tons of numerical/scientific computing software, and likely used by many other programs needing heavy math

[a-dub]

Translators are interesting here. In this case it looks like it's just falling during translation (and a fast failure at that). An interesting question would be if there were a structured input (ie; valid Fortran) that result in the emission of unsafe C.