[tex-live] [PATCH] Fix tautological (always false) compare

[Stefan Brüns]

The current code compares the PDF document change counter with itself, which
is always false. Compare change counter of the wrapped document with the
counter of the wrapper instead.

---
 luatexdir/lua/lepdflib.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/texk/web2c/luatexdir/lua/lepdflib.cc b/texk/web2c/luatexdir/lua/
lepdflib.cc
index 795550e..63fcc11 100644
--- a/texk/web2c/luatexdir/lua/lepdflib.cc
+++ b/texk/web2c/luatexdir/lua/lepdflib.cc
@@ -1966,7 +1966,7 @@ static int m_Object_arrayAdd(lua_State * L)
     if (uin->pd != NULL && uobj->pd != NULL && uin->pd != uobj->pd)
         pdfdoc_differs_error(L);
     if ((uin->pd != NULL && uin->pd->pc != uin->pc)
-        || (uobj->pd != NULL && uobj->pd->pc != uobj->pd->pc))
+        || (uobj->pd != NULL && uobj->pd->pc != uobj->pc))
         pdfdoc_changed_error(L);
     if (!((Object *) uin->d)->isArray())
         luaL_error(L, "Object is not an Array");
@@ -2047,7 +2047,7 @@ static int m_Object_dictAdd(lua_State * L)
     if (uin->pd != NULL && uobj->pd != NULL && uin->pd != uobj->pd)
         pdfdoc_differs_error(L);
     if ((uin->pd != NULL && uin->pd->pc != uin->pc)
-        || (uobj->pd != NULL && uobj->pd->pc != uobj->pd->pc))
+        || (uobj->pd != NULL && uobj->pd->pc != uobj->pc))
         pdfdoc_changed_error(L);
     if (!((Object *) uin->d)->isDict())
         luaL_error(L, "Object is not a Dict");
@@ -2065,7 +2065,7 @@ static int m_Object_dictSet(lua_State * L)
     if (uin->pd != NULL && uobj->pd != NULL && uin->pd != uobj->pd)
         pdfdoc_differs_error(L);
     if ((uin->pd != NULL && uin->pd->pc != uin->pc)
-        || (uobj->pd != NULL && uobj->pd->pc != uobj->pd->pc))
+        || (uobj->pd != NULL && uobj->pd->pc != uobj->pc))
         pdfdoc_changed_error(L);
     if (!((Object *) uin->d)->isDict())
         luaL_error(L, "Object is not a Dict");
-- 
2.19.2


-- 
Stefan Brüns  /  Bergstraße 21  /  52062 Aachen
home: +49 241 53809034     mobile: +49 151 50412019
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