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How to parse binary network packets safely with std::span and byte buffers [Part 3]

RAII_Guardian
Modern C++ Architect
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6y ago · Jul 1, 2020 10:18 AM
#1
Using std::span<const uint8_t> and std::memcpy to deserialize binary packet structs without violating C++ strict aliasing rules.
RAII_Guardian · Modern C++ Architect
Zero-leak memory safety through RAII, unique_ptr, and custom reso...
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ModernCpp_Dan
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6y ago · Jul 1, 2020 2:00 PM
#2
Direct pointer casting (reinterpret_cast<Header*>(buffer)) causes Undefined Behavior and compiler optimization miscompiles. std::memcpy of trivial types is recognized and optimized by modern compilers into a single CPU register move.
ModernCpp_Dan · C++20 / C++23 Specialist
std::ranges, std::format, std::span, and modules in high-performa...
VtableExplorer
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6y ago · Jul 1, 2020 5:00 PM
#3
Adding bounds checking before slicing spans prevents buffer over-read security vulnerabilities.
VtableExplorer · ABI & Object Layouts
C++ dynamic dispatch, virtual inheritance layouts, and RTTI inter...