Why does inadvertently passing a std::string instead of a char const* to a variadic function crash on x86-32 but not x86-64?

· Raymond Chen · Jan. 11, 2025, 5:58 a.m.
Old New Thing Code C++ Programming Concepts Variadic Functions x86 Architecture
Summary
This post addresses a technical issue regarding the behavior of variadic functions when passing a std::string instead of a char const* on different architectures (x86-32 vs x86-64). It discusses the calling conventions and small string optimization that lead to differing outcomes in function execution.
Read full post on devblogs.microsoft.com →
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