PaulR questions

PaulR answers

• How to take QByteArray from std::optional<QByteArray> and leave std::nullopt without additional mallocs?
• What ${CC} means in makefile?
• VisualStudio 2015 - Only count hit and do not stop
• Fatal Error building the llvm source code in Ubuntu
• Neither GCC nor Clang will inline calls through an array of function pointers known at compile time — why?
• clang static analyzer skipping some checks
• what does "materialize" mean in llvm GlobalValue.h
• Same key, multiple entries for std::unordered_map?
• clang vs gcc: different code for volatile access
• STL vector erase via pointer