Talk Preview: Building on clang-tidy: move from printf-style to std::print-style logging
summary
Old C codebase logging gets automated modernisation using a clang-tidy check that converts non-macro printf-style calls first to fmt::printf to fmt::print to std::print and then to more standard logging APIs, avoiding fragile search-and-replace. Implementation reuses and extends Clang 17’s modernize-use-std-print logic, handles format-string vs. argument mismatches, and runs as an automated fix; the custom check successfully modernises diagnostic logging and paves the way for spdlog.
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