C函数中没有从Fortran调用的参数

I am working with Fortran 90 code that calls a C function. This code is well tested and compiles successfully with the Intel Fortran compiler. I'm trying to get it to work with the GNU Fortran compiler. The F90 code calls a C function, but it does not specify some of the parameters. The call looks like this:I am working with Fortran 90 code that calls a