Thanks for your help on this.
It looks to be some sort of problem with the Math::BigInt module, the WSDL11 module simply required it. I can get the versions of the modules out with the code 
XML::Compile 1.21
XML::Compile::WSDL11 2.21
Math::BigInt 1.99
Math::BigInt::FastCalc 0.24

[download]
No change to $SIG{__DIE__} AFAIK, but this module is run on a fork from the main process.
Given that it appears to be Math::BigInt causing the issue, I'll see if I can put a small program on here which shows the problem

In reply to Re^6: Library problems with XML::Compile::WSDL11 and Math::BigInt by space_monk
in thread Library problems with XML::Compile::WSDL11 and Math::BigInt by space_monk

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