Memory overrun in fortran interface returning bool

[aaroncblack]

Aaron Skinner and I ran into a stack memory overflow on the Fortran interface:

conduit_node_has_path(node, path)

The C function implementation is returning a 4 byte integer, but the Fortran interface has the return type declared as a

logical(c_bool)

which is 1 byte.

So, there is a 3 byte overrun.

[aaroncblack]

A couple possible fixes:

• change the C function to use a boolean ( if requiring the c99 standard is acceptable ).
  Looks like the C function is currently upcasting the boolean coming from C++ to an integer.

• change the Fortran interface to return a 4 byte boolean ( logical*4 ).

[cyrush]

thanks @aaroncblack. To keep the current interface -- we can wrap the c funcs with a different name (we use c_ prefix for other cases) and do the conversion in a method that implements the current interface. I am sure exists in a few places, I'll do an inventory.