RFA: tweak minsyms check for GNU v3 symbols
Daniel Jacobowitz
drow@mvista.com
Sun Apr 13 15:25:00 GMT 2003
On Thu, Apr 03, 2003 at 04:41:44PM -0500, Elena Zannoni wrote:
> Daniel Jacobowitz writes:
> > This is based on a patch that Kris Warkentin sent out last October, that's
> > been sitting in my inbox for a while. It's a little more efficient but the
> > idea is the same. Right now, we consider any _Z symbol to imply GNU v3; but
> > what we really want is for any _Z symbol _which demangled successfully_ to
> > imply GNU v3. _Zero is the QNX example of a false positive for the current
> > check. It's still not perfect, but it's much better.
> >
> > Tested in combination with the "set cp-abi" patch, to make sure it behaved
> > properly; sure enough:
> > - we still get GNU v3 for a v3 application
> > - we no longer get GNU v3 for a v2 application containing _Zero (before
> > the patch, we did).
> >
> > Is this OK?
> >
>
>
> I am back. yey.
Welcome back (belatedly)!
> approved, sure.
Checked in (belatedly). Here's the updated patch, someone had done
the SYMBOL_LINKAGE_NAME bit already.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
2003-04-13 Daniel Jacobowitz <drow@mvista.com>
* minsyms.c (install_minimal_symbols): Only switch to gnu-v3 mode
if the linkage name demangled successfully.
Index: gdb/minsyms.c
===================================================================
RCS file: /cvs/src/src/gdb/minsyms.c,v
retrieving revision 1.29
diff -u -p -r1.29 minsyms.c
--- gdb/minsyms.c 10 Mar 2003 20:40:45 -0000 1.29
+++ gdb/minsyms.c 13 Apr 2003 15:20:28 -0000
@@ -920,8 +920,14 @@ install_minimal_symbols (struct objfile
for (i = 0; i < mcount; i++)
{
+ /* If a symbol's name starts with _Z and was successfully
+ demangled, then we can assume we've found a GNU v3 symbol.
+ For now we set the C++ ABI globally; if the user is
+ mixing ABIs then the user will need to "set cp-abi"
+ manually. */
const char *name = SYMBOL_LINKAGE_NAME (&objfile->msymbols[i]);
- if (name[0] == '_' && name[1] == 'Z')
+ if (name[0] == '_' && name[1] == 'Z'
+ && SYMBOL_DEMANGLED_NAME (&objfile->msymbols[i]) != NULL)
{
set_cp_abi_as_auto_default ("gnu-v3");
break;
More information about the Gdb-patches
mailing list