https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65015
--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> --- This patch works wit the existing linker: diff --git a/gcc/varasm.c b/gcc/varasm.c index 0211306..f3241a8 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -7043,7 +7043,12 @@ default_file_start (void) fputs (ASM_APP_OFF, asm_out_file); if (targetm.asm_file_start_file_directive) - output_file_directive (asm_out_file, main_input_filename); + { + if (in_lto_p) + output_file_directive (asm_out_file, "<artificial>"); + else + output_file_directive (asm_out_file, main_input_filename); + } } /* This is a generic routine suitable for use as TARGET_ASM_FILE_END