https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109591
--- Comment #3 from Fangrui Song <i at maskray dot me> --- (In reply to Andrew Pinski from comment #2) > GCC added -fdebug-prefix-map= back in r0-82686-gc8aea42ce2c691e4e8 2 years > before clang was first release . So .... Thank you for the super rapid response! I have created https://reviews.llvm.org/D148975 to change Clang to follow GCC's lead. There is an opinion that is different, though: > For me long matching prefix makes more sense, but if the same prefix is used > multiple times, the last option should win.