Re: Options(*Varsize) question

Thanks, Jon and everyone else who responded so quickly!

The following worked:

d ExtractSpecs pr
d LongString 32000a Varying Const
...
ExtractSpecs( TEXT50 ) ;
...
p ExtractSpecs b
d ExtractSpecs pi
d LongString 32000a Varying Const

- Dan

On Wed, Oct 28, 2015 at 12:11 PM, Jon Paris <jon.paris@xxxxxxxxxxxxxx>
wrote:

The behaviour is as expected - but there is certainly no need to pass a
second parameter or indeed to use Op descriptors.

Not sure what you did with varying but that should give you the answer you
seek.

In the called routine define the string as 32000 varying and add the
keyword CONST instead of varsize.

By doing that you enable the compiler to copy the string and in doing so
it will set the length of the varying field received by the caller to the
length of the original field.

If you always want the string trimmed then you could add the Trim option
to the proto and that will take care of that for you.

What you lose with Const of course is the ability to modify the string but
you don’t mention that as a requirement.

On Oct 28, 2015, at 11:49 AM, Dan <dan27649@xxxxxxxxx> wrote:

I've tried a couple of variations on the code snippet below, but this is
the only one that compiled. In the example below, TEXT50 is a 50-char
length variable. Once inside the ExtractSpecs proc, LongString shows the
value of TEXT50 in the first 50 columns, but is followed by "junk".

My (apparently incorrect) understanding of Options(*Varsize) is that the
ExtractSpecs proc would "see" only the value in LongString up to the

length

of the variable passed to it. The compile fails if Options(*Varsize) is
not specified. Ditto if I used the VARYING keyword.

My kludgy, hopefully temporary, workaround is to capture the length of

the

first parameter and pass it as the second parameter.

Ideas / advice / specific RTFM references appreciated!

d ExtractSpecs pr
d LongString 32000a Options( *VarSize )
...
ExtractSpecs( TEXT50 ) ;
...
p ExtractSpecs b
d ExtractSpecs pi
d LongString 32000a Options( *VarSize )

- Dan