[binutils-gdb] Mark vDSO as not a file

[Tom Tromey]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c836575a6f0f45b1eddf5eefc6e300420f1b2aec

commit c836575a6f0f45b1eddf5eefc6e300420f1b2aec
Author: Tom Tromey <tromey@adacore.com>
Date:   Fri Mar 4 11:58:27 2022 -0700

    Mark vDSO as not a file
    
    The vDSO objfile is not a real file, so mark it as such.  I noticed
    this because, when playing with debuginfod, I saw:
    
    Downloading 0.01 MB separate debug info for /tmp/system-supplied DSO at 0x7ffff7fc9000
    
    That "/tmp" is wrong -- it's just gdb's cwd.  This patch corrects the
    problem, resulting in:
    
    Downloading 0.01 MB separate debug info for system-supplied DSO at 0x7ffff7fc9000
    
    Regression tested on x86-64 Fedora 34.

Diff:
---
 gdb/symfile-mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/symfile-mem.c b/gdb/symfile-mem.c
index b4c359ccd31..73c5ee378b8 100644
--- a/gdb/symfile-mem.c
+++ b/gdb/symfile-mem.c
@@ -88,7 +88,7 @@ symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr,
   struct bfd *nbfd;
   struct bfd_section *sec;
   bfd_vma loadbase;
-  symfile_add_flags add_flags = 0;
+  symfile_add_flags add_flags = SYMFILE_NOT_FILENAME;
 
   if (bfd_get_flavour (templ) != bfd_target_elf_flavour)
     error (_("add-symbol-file-from-memory not supported for this target"));