Incorrect (throw-based) alloFunc for zlib1. Possible memory leak.
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Key: CORE-6221
URL: http://tracker.firebirdsql.org/browse/CORE-6221
Project: Firebird Core
Issue Type: Bug
Affects Versions: 3.0.5
Reporter: Kovalenko Dmitry
https://www.zlib.net/manual.html
Usage of z_stream_s structure: zalloc must return Z_NULL if there is not enough
memory for the object.
Firebird code, if I understood correctly, assign to zalloc throw-based
allocation func:
void* allocFunc(void*, uInt items, uInt size)
{
return MemoryPool::globalAlloc(items * size ALLOC_ARGS); //thow ?
}
In deflateInit, for example, has five calls of zalloc functions and has
rollback of initialization if second (and next) call of zalloc return nullptr.
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