Imagelibrary/binutils-gdb
1
0
Fork 1
mirror of https://github.com/bminor/binutils-gdb.git synced 2025-12-28 10:00:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

Use gdb_bfd_ref_ptr in objfile

Browse Source 
This changes struct objfile to use a gdb_bfd_ref_ptr.  In addition to
removing some manual memory management, this fixes a use-after-free
that was introduced by the registry rewrite series.  The issue there
was that, in some cases, registry shutdown could refer to memory that
had already been freed.  This help fix the bug by delaying the
destruction of the BFD reference (and thus the per-bfd object) until
after the registry has been shut down.
This commit is contained in:
Tom Tromey
2022-08-02 09:55:32 -06:00
parent 4d44946794
commit 98badbfdc2
40 changed files with 256 additions and 241 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
gdb/dwarf2/frame.c
View File

@@ -138,7 +138,7 @@ typedef std::vector<dwarf2_fde *> dwarf2_fde_table;
struct comp_unit
{
comp_unit (struct objfile *objf)
: abfd (objf->obfd)
: abfd (objf->obfd.get ())
{
}
@@ -1534,7 +1534,7 @@ bsearch_fde_cmp (const dwarf2_fde *fde, CORE_ADDR seek_pc)
static comp_unit *
find_comp_unit (struct objfile *objfile)
{
bfd *abfd = objfile->obfd;
bfd *abfd = objfile->obfd.get ();
if (gdb_bfd_requires_relocations (abfd))
return dwarf2_frame_objfile_data.get (objfile);
@@ -1547,7 +1547,7 @@ find_comp_unit (struct objfile *objfile)
static void
set_comp_unit (struct objfile *objfile, struct comp_unit *unit)
{
bfd *abfd = objfile->obfd;
bfd *abfd = objfile->obfd.get ();
if (gdb_bfd_requires_relocations (abfd))
return dwarf2_frame_objfile_data.set (objfile, unit);