Umm, okay. The key problem here is that DBD::DB2 isn't using the Driver.xst 'driver template' file that the DBI provides.
This means that, apart from duplicating a bunch of code, you're also missing out on a bunch of optimizations. The Driver.xst file and related info is discussed in http://search.cpan.org/~timb/DBI/lib/DBI/DBD.pm Take a look at others drivers, like DBD::Sybase and/or DBD::Oracle, for more examples. If you're desparate for a quick fix you can use this code instead: SV **svp = hv_fetch((HV*)SvRV(h), "CachedKids", 10, 0); if (svp && SvROK(*svp) && SvTYPE(SvRV(*svp)) == SVt_PVHV) { hv_clear((HV*)SvRV(*svp)); } but you're likely to bump into similar issues in later versions. Driver.xst is the way to go. Tim. On Tue, May 15, 2007 at 10:56:13AM -0500, Swetha Patel wrote: > Hi Mr. Bunce, > > I work for IBM, and was trying to update the DBD::DB2, so that it works > with DBI 1.55. In doing so I > came accross a compile error > "DB2.xs", line 115.9: 1506-025 (S) Operand must be a modifiable lvalue. > Line 115 is: DBIc_CACHED_KIDS(imp_dbh) = Nullhv. > > In our code it has effectd these three lines (in DB2.xs): > > if (DBIc_CACHED_KIDS(imp_dbh)) { > SvREFCNT_dec(DBIc_CACHED_KIDS(imp_dbh)); > DBIc_CACHED_KIDS(imp_dbh) = Nullhv; > } > > I noticed that DBIc_CACHED_KIDS in DBI 1.53 was a macro for _imp2com(imp, > cached_kids). > And _imp2com(p,f) is a macro for ((p)->com.f). > > So in effect DBIc_CACHED_KIDS(imp_dbh) became imp->com.cached_kids in DBI > 1.53. > > But in DBI 1.55 > #define DBIc_CACHED_KIDS(imp) Nullhv > And in effect in DBI 1.55 it becomes > Nullhv = Nullhv; > And hence the compile error. > I am not sure what imp->com.cached_kids is used for. > I have also done a diff on the two versions of DBI.xs, and noticed that > these three lines where deleted > in the new DBI.xs, although there were some other things added. > Any information on this change and information regarding the replacement > for this change is greatly > appreciated. > > Thanks, > Swetha Patel > [EMAIL PROTECTED]
