A working program had the following code:
018000 MVC 0(8,R1),=CL8'EJESPOP' Set command name
018010 MVC 8(8,R1),=CL8'PATHNAME' Set command parameter
An overzealous programmer, trying to be helpful, changed it to:
018000 MVC 0(16,R1),=CL8'EJESPOP PATHNAME' Set cmd name/parm
which introduced a problem that wasn't discovered until a very
inopportune time.
Of course, there is no substitute for thorough testing. But, it occurs
to me that the assembler could issue a warning when data is lost from
truncation as the result of a nominal value requiring more bytes than
are explicitly specified via a length modifier.
Single-byte character constants are the data type in which I'm
interested, but an argument might exist for supporting this for other
data types as well.
Note: according to the book, double-byte character constants can't be
truncated, fixed-point constants can't be truncated if it will result in
data loss, and floating-point constants are rounded.
Is there a way to achieve what I want using existing HLASM R6 options?
If not, is a requirement already on the books?
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
http://www.phoenixsoftware.com/
