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[Bug gas/28629] [gas, --gdwarf-5] File 0 has wrong dir


From: vries at gcc dot gnu.org
Subject: [Bug gas/28629] [gas, --gdwarf-5] File 0 has wrong dir
Date: Fri, 26 Nov 2021 06:50:36 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=28629

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Then let's look at the .debug_line section:
...
$ readelf -wl tui-layout-asm-short-prog.o                                      
               The Directory Table (offset 0x22, lines 2, columns 1):
  Entry Name
  0     /home/vries/gdb_versions/devel
  1     /home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.tui

 The File Name Table (offset 0x30, lines 2, columns 2):
  Entry Dir     Name
  0     0       tui-layout-asm-short-prog.S
  1     1       tui-layout-asm-short-prog.S
...

It's the same problem.  File 0 has dir 0, which spells out the non-existent
/home/vries/gdb_versions/devel/tui-layout-asm-short-prog.S.

For completeness, the comparison with dwarf 4 here as well:
...
 The Directory Table (offset 0x1c):
  1     /home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.tui

 The File Name Table (offset 0x56):
  Entry Dir     Time    Size    Name
  1     1       0       0       tui-layout-asm-short-prog.S
...

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