https://sourceware.org/bugzilla/show_bug.cgi?id=27280
--- Comment #1 from Fangrui Song <maskray at google dot com> --- The idea of .file 0 auto-upgrade is that the compiler should emit .file 0 before .file 1, so the assembler does not need to deal with DWARF v5 md5 syntax. I compiled a top-of-tree GCC. It emits `.file 1` instead of `.file 0`. So what is current GCC's support for version 5 .debug_line? You can see that `clang -gdwarf-5 -S` emits `.file 0`. -- You are receiving this mail because: You are on the CC list for the bug.