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Figuring out which classes are part of the public API by using library symbols is fragile (dependent on specific compiler optimizations) and unreliable (misses some inline things). Instead, use castxml, a tool that parses C++ to an abstract syntax tree and generates XML, to get a reliable accounting of public classes and their sizes.
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This requires a special build option.
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Why did this ever work? Hard to say...perhaps a library we linked against was setting `int _dowildcard = -1;` somewhere and no longer is. Apparently linking with CRT_glob.o has been the way to do this for a very long time, and we've just been lucky that it worked all this time.
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As a rule, we should avoid conditional compilation is it always causes code paths that are sometimes not even seen lexically by the compiler. Also, we want the actual code being fuzzed to be as close as possible to the real code. Conditional compilation is suitable to handle underlying system differences. Instead, favor configuration using callbacks or other methods that can be triggered in the places where they need to be exercised.
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Also, change so version to 0.
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From time to time, someone has a problem because their build is grabbing an old version of qpdf header files that are installed somewhere on their system. I am hoping this will put an end to that.
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Some new symbols were exported.