X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fiface%2FMkIface.lhs;h=1521069001d05bd8bb14d8ea61ff8d4ce22f5a62;hb=c4ea1371c0683bbd6e6c78d73435de369bb6c468;hp=e335f758bc423dab758ce2e71cfeeb552774af51;hpb=d5fbbe4c8ddc0202774aebead8b425d22ed43392;p=ghc-hetmet.git

diff --git a/compiler/iface/MkIface.lhs b/compiler/iface/MkIface.lhs
index e335f75..1521069 100644
--- a/compiler/iface/MkIface.lhs
+++ b/compiler/iface/MkIface.lhs
@@ -181,6 +181,10 @@ code of A, and thereby haul in all the stuff reachable from it.
 haul in all the unfoldings for B, in case the module that imports A *is*
 compiled with -O.  I think this is the case.]
 
+SimonM [30/11/2007]: I believe the above is all out of date; the
+current implementation doesn't do it this way.  Instead, when any of
+the dependencies of a declaration changes, the version of the
+declaration itself changes.
 
 \begin{code}
 #include "HsVersions.h"
@@ -704,6 +708,8 @@ computeChangedOccs ver_fn this_module old_usages eq_info
     -- return True if an external name has changed
     name_changed :: Name -> Bool
     name_changed nm
+	| isWiredInName nm	-- Wired-in things don't get into interface
+	= False			-- files and hence don't get into the ver_fn
         | Just ents <- lookupUFM usg_modmap (moduleName mod),
           Just v    <- lookupUFM ents parent_occ
         = v < new_version