[PATCH] gas: Use the directory name in .file 0

[Alan Modra]

On Thu, Sep 09, 2021 at 09:28:00AM -0700, H.J. Lu wrote:
> DWARF5 allows .file 0 to take an optional directory name.  Set the entry
> 0 of the directory table to the directory name in .file 0.
> 
> 	PR gas/28266
> 	* dwarf2dbg.c (get_directory_table_entry): Add an argument for
> 	the directory name in .file 0 and use it, instead of PWD.
> 	(allocate_filenum): Pass NULL to get_directory_table_entry.
> 	(allocate_filename_to_slot): Pass the incoming dirname to
> 	get_directory_table_entry.
> 	* testsuite/gas/elf/dwarf-5-file0-2.d: New file.
> 	* testsuite/gas/elf/dwarf-5-file0-2.s: Likewise.
> 	* testsuite/gas/elf/elf.exp: Run dwarf-5-file0-2.

OK.

-- 
Alan Modra
Australia Development Lab, IBM