I'm talking about clang-format, a formatting tool for C and C++ code, which has nothing to do with compiling your code with clang. You can use it with any compiler.
That said, the title is still a lie in that clang-format is not really at a fault here at all: clang-format triggered the issue on my codebase, by sorting header files, and this in turn triggered a libc performance issue.
So as I initially say it, a commit which purely clang-format 'd my codebase caused a massive regression - but the full story is doesn't implicate clang-format at all, really.
That said, the title is still a lie in that clang-format is not really at a fault here at all: clang-format triggered the issue on my codebase, by sorting header files, and this in turn triggered a libc performance issue.
So as I initially say it, a commit which purely clang-format 'd my codebase caused a massive regression - but the full story is doesn't implicate clang-format at all, really.