[Crash-utility] Cleanup: GDB does not need struct syment

[Dave Anderson]

----- Original Message -----
> The syment struct is not used for anything by the embedded GDB,
> so we can remove it completely.
> 
> Signed-off-by: Petr Tesarik <ptesarik at suse.cz>

There is a capability that allows you to continue to use an older
version of gdb with the current crash sources.  That's what the
setup_gdb_defaults() function in configure.c does if there's
a ".gdb" file placed in the top-level directory.  And given the
fact that gdb-6.1 and earlier does need the struct syment declaration,
defs.h can't be changed.

But yes, the declarations in gdb-7.0/gdb/symtab.c are superfluous.  
I never noticed -- I would have thought that the -Wall in the
gdb compile line would complain about it, but it doesn't.

Anyway, when changing the gdb-7.0-patch, I prefer that the patch 
be added to the end of the file as a discrete diff, especially
since there is already a subsequent change to symtab.c.  I'll
do that, so consider the symtab.c part of your patch queued for
next release.

Thanks,
  Dave

> 
> ---
> defs.h | 5 ++---
> gdb-7.0.patch | 4 +---
> 2 files changed, 3 insertions(+), 6 deletions(-)
> 
> --- a/defs.h
> +++ b/defs.h
> @@ -1963,9 +1963,6 @@ struct alias_data { /* c
> retaddr[i] = 0; \
> }
> 
> -#endif /* !GDB_COMMON */
> -
> -
> #define SYMBOL_NAME_USED (0x1)
> #define MODULE_SYMBOL (0x2)
> #define IS_MODULE_SYMBOL(SYM) ((SYM)->flags & MODULE_SYMBOL)
> @@ -1981,6 +1978,8 @@ struct syment {
> unsigned char pad2;
> };
> 
> +#endif /* !GDB_COMMON */
> +
> #define NAMESPACE_INIT (1)
> #define NAMESPACE_REUSE (2)
> #define NAMESPACE_FREE (3)
> --- a/gdb-7.0.patch
> +++ b/gdb-7.0.patch
> @@ -468,7 +468,7 @@
> return returnval;
> }
> 
> -@@ -4783,3 +4790,619 @@ Valid values are \"ask\", \"all\", \"can
> +@@ -4783,3 +4790,617 @@ Valid values are \"ask\", \"all\", \"can
> 
> observer_attach_executable_changed
> (symtab_observer_executable_changed);
> }
> @@ -880,8 +880,6 @@
> + register struct objfile *objfile;
> + register struct minimal_symbol *m;
> + struct load_module *lm;
> -+ struct syment *sp;
> -+ struct syment *spx;
> + int external, subsequent, found;
> + off_t offset;
> + ulong value, adjusted;
> 
> --
> Crash-utility mailing list
> Crash-utility at redhat.com
> https://www.redhat.com/mailman/listinfo/crash-utility