The root cause of https://golang.org/issue/16780 is that GCC on s390
GNU/Linux does not emit a .file directive. This is because the
function s390_asm_file_start does not call default_file_start, unlike
most other TARGET_ASM_FILE_START hooks. This patch should fix the
problem. Since I don't have an s390 handy, it would be great if
somebody could test this for me. Thanks.
Ian
2016-08-23 Ian Lance Taylor <[email protected]>
* config/s390/s390.c (s390_asm_file_start): Call
default_file_start.
Index: config/s390/s390.c
===================================================================
--- config/s390/s390.c (revision 239708)
+++ config/s390/s390.c (working copy)
@@ -14972,6 +14972,7 @@ s390_vector_alignment (const_tree type)
static void
s390_asm_file_start (void)
{
+ default_file_start ();
s390_asm_output_machine_for_arch (asm_out_file);
}
#endif
