I realized that I wanted to find out in my XS module whether an input parameter was readonly or not. I was browsing perlapi.html, but could find any function.
Searching Google, I soon found that SvREADONLY(sv) would do the task, and it runs fine with ActiveState build 809. But the only reference in perlapi.html is in passing under sv_magicext. I don't really like using undocumented functions. So is SvREADONLY supported? Deprecated? Should I use something else? -- Erland Sommarskog, Stockholm, [EMAIL PROTECTED]
