gdb/gdb-stale-sectindex.patch

113 lines
3.2 KiB
Diff

http://sourceware.org/ml/gdb-patches/2010-02/msg00477.html
Subject: Re: [patch] Fix crash on stale addrinfo->sectindex
On Fri, 19 Feb 2010 04:01:05 +0100, Tom Tromey wrote:
> >>>>> "Jan" == Jan Kratochvil <jan.kratochvil@redhat.com> writes:
> I think you ought to move this comment as well.
> It appears to just be hanging at the end of a block after the patch.
Yes; forgot.
> This is ok with that change. Thanks.
Checked-in.
On Fri, 19 Feb 2010 04:10:30 +0100, Tom Tromey wrote:
> Oh, by the way, I think this is reasonable for 7.1. It is
> straightforward and fixes a reported crash. If Joel agrees, please put
> it on the branch. Thanks.
OK for the branch?
Thanks,
Jan
http://sourceware.org/ml/gdb-cvs/2010-02/msg00162.html
### src/gdb/ChangeLog 2010/02/19 00:35:53 1.11380
### src/gdb/ChangeLog 2010/02/19 06:19:44 1.11381
## -1,3 +1,10 @@
+2010-02-19 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * symfile.c (addr_info_make_relative): Extend comment. Move SECT to
+ a more inner block. Initialize ADDR by LOWER_OFFSET only if it was
+ found by bfd_get_section_by_name.
+ * symfile.h (struct section_addr_info) <sectindex>: New comment.
+
2010-02-19 Joel Brobecker <brobecker@adacore.com>
* NEWS: Add new "[...] since 7.1" section. Rename the "[...] since
--- src/gdb/symfile.c 2010/02/18 19:17:00 1.272
+++ src/gdb/symfile.c 2010/02/19 06:19:45 1.273
@@ -562,13 +562,13 @@
}
/* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in
- also SECTINDEXes there. */
+ also SECTINDEXes specific to ABFD there. This function can be used to
+ rebase ADDRS to start referencing different BFD than before. */
void
addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd)
{
asection *lower_sect;
- asection *sect;
CORE_ADDR lower_offset;
int i;
@@ -597,25 +597,29 @@
for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
{
- if (addrs->other[i].addr != 0)
+ asection *sect = bfd_get_section_by_name (abfd, addrs->other[i].name);
+
+ if (sect)
{
- sect = bfd_get_section_by_name (abfd, addrs->other[i].name);
- if (sect)
+ /* This is the index used by BFD. */
+ addrs->other[i].sectindex = sect->index;
+
+ if (addrs->other[i].addr != 0)
{
addrs->other[i].addr -= bfd_section_vma (abfd, sect);
lower_offset = addrs->other[i].addr;
- /* This is the index used by BFD. */
- addrs->other[i].sectindex = sect->index;
}
else
- {
- warning (_("section %s not found in %s"), addrs->other[i].name,
- bfd_get_filename (abfd));
- addrs->other[i].addr = 0;
- }
+ addrs->other[i].addr = lower_offset;
}
else
- addrs->other[i].addr = lower_offset;
+ {
+ warning (_("section %s not found in %s"), addrs->other[i].name,
+ bfd_get_filename (abfd));
+ addrs->other[i].addr = 0;
+
+ /* SECTINDEX is invalid if ADDR is zero. */
+ }
}
}
--- src/gdb/symfile.h 2010/02/03 14:13:16 1.64
+++ src/gdb/symfile.h 2010/02/19 06:19:45 1.65
@@ -80,6 +80,8 @@
{
CORE_ADDR addr;
char *name;
+
+ /* SECTINDEX must be valid for associated BFD if ADDR is not zero. */
int sectindex;
} other[1];
};