[Apt-Rpm] please pull my changes
Alexey Tourbin
at at altlinux.ru
Sun Nov 16 16:12:30 PST 2008
On Sun, Nov 16, 2008 at 12:09:49PM +0200, Panu Matilainen wrote:
> >8ca497e... Change type of pkgCache::Package.ID to 'unsigned int'.
> Hmm, I think this wants a bump of the cache MajorVersion to go with it to
> force a cache rebuild due to the changed structure.
This change is backward compatible (for most achitecutres).
apt-pkg/pkgcache.h
208 struct pkgCache::Package
209 {
210 // Pointers
211 map_ptrloc Name; // Stringtable
212 map_ptrloc VersionList; // Version
213 map_ptrloc CurrentVer; // Version
214 map_ptrloc Section; // StringTable (StringItem)
215
216 // Linked list
217 map_ptrloc NextPackage; // Package
218 map_ptrloc RevDepends; // Dependency
219 map_ptrloc ProvidesList; // Provides
220
221 // Install/Remove/Purge etc
222 unsigned char SelectedState; // What
223 unsigned char InstState; // Flags
224 unsigned char CurrentState; // State
1-byte padding (like one more "unsigned char")
225
226 unsigned short ID;
2-byte padding (like one more "short" before Flags)
227 unsigned long Flags;
228 };
So, changing "short" to "int" simply fills the second padding.
sizeof(struct pkgCache::Package) does not change, and the code
that expects "unsigned short" will get the right ID (provided
the ID does not exceed its old limit).
However, we may also want to remove other "short" limits,
and change MajorVersion then.
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