* defs.h (ldirname): New prototype.

* dwarf2read.c (read_file_scope): Use DW_AT_name if DW_AT_comp_dir is
	missing.
	* utils.c (ldirname): New function.
	* xml-tdesc.c (file_read_description_xml): Use ldirname.

gdb/defs.h

@@ -417,6 +417,8 @@ extern unsigned long gnu_debuglink_crc32 (unsigned long crc,
 
 ULONGEST strtoulst (const char *num, const char **trailer, int base);
 
+char *ldirname (const char *filename);
+
 /* From demangle.c */
 
 extern void set_demangling_style (char *);