The new probefunc() routine in tapset/context.stp has to post-process the output of stp_symbol_sprint() because the former only wants the function name and not the other numeric data. A variant of stp_symbol_sprint should be created that just returns the function name alone, and context.stp should use that instead.
While at it, the "String" runtime data type should not be used - it can just take a char* and length like snprintf.
Fix committed runtime/sym.c r1.9 tapset/context.stp r1.22