> Here's output from valgrind:
>
> ==22360== Stack overflow in thread 1: can't grow stack to 0x7fe801ff8
> ==22360== 
> ==22360== Process terminating with default action of signal 11 (SIGSEGV)
> ==22360== Access not within mapped region at address 0x7FE801FF8
> ==22360== at 0x50F35EE: 
> CryptoPP::Base32Decoder::IsolatedInitialize(CryptoPP::NameValuePairs 
> const&) (in /usr/lib/libcrypto++.so.9.0.0)
>

We are tracking this at "Crash when trying to set alternate alphabet for 
Base32 decoder", https://github.com/weidai11/cryptopp/issues/108.

It looks like the stack is being blown away due to recursion, and not  a 
memory problem.

There's nothing you will be able to do with the shared object you are 
using. You will probably need to add a Base32AltEncoder and 
Base32AltDecoder class so things work as expected for you.

Jeff

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