I came accross a case in legacy code where a subroutine is defined to accept
some matrixes as parameter ei:
SUBROUTINE FOOBAR(TXT, MAT A, MAT B, MAT C, MAT D, OPTION)
One of the calling programs that makes use of this subroutine does this:
CALL FOOBAR("HELLO", "", "", "", "", "WORLD")
Instead of passing a matrix, it is passing an empty string.
The result is that in FOOBAR, matrixes A, B, C and D are of size zero. In
FOOBAR there is code that does:
MATBUILD REC.A FROM A USING CHAR(1)
Now the MATBUILD command on a matrix of size zero is giving me an undefined
variable in a test program I wrote but in the program in production, it is
giving me the content of a variable in the program.
I was wondering if there is a way to detect if a matrix is of size zero in
Unibasic.
-------
u2-users mailing list
u2-users@listserver.u2ug.org
To unsubscribe please visit http://listserver.u2ug.org/
