Order change in 'pushfuncname'

'pushglobalfuncname' can be quite slow (as it traverses all globals and
all loaded modules), so try first to get a name from the code.

lauxlib.c

@@ -94,14 +94,14 @@ static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
 
 
 static void pushfuncname (lua_State *L, lua_Debug *ar) {
-  if (pushglobalfuncname(L, ar)) {  /* try first a global name */
-    lua_pushfstring(L, "function '%s'", lua_tostring(L, -1));
-    lua_remove(L, -2);  /* remove name */
-  }
-  else if (*ar->namewhat != '\0')  /* is there a name from code? */
+  if (*ar->namewhat != '\0')  /* is there a name from code? */
     lua_pushfstring(L, "%s '%s'", ar->namewhat, ar->name);  /* use it */
   else if (*ar->what == 'm')  /* main? */
       lua_pushliteral(L, "main chunk");
+  else if (pushglobalfuncname(L, ar)) {  /* try a global name */
+    lua_pushfstring(L, "function '%s'", lua_tostring(L, -1));
+    lua_remove(L, -2);  /* remove name */
+  }
   else if (*ar->what != 'C')  /* for Lua functions, use <file:line> */
     lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
   else  /* nothing left... */

testes/db.lua

@@ -701,7 +701,7 @@ assert(debug.traceback(print, 4) == print)
 assert(string.find(debug.traceback("hi", 4), "^hi\n"))
 assert(string.find(debug.traceback("hi"), "^hi\n"))
 assert(not string.find(debug.traceback("hi"), "'debug.traceback'"))
-assert(string.find(debug.traceback("hi", 0), "'debug.traceback'"))
+assert(string.find(debug.traceback("hi", 0), "'traceback'"))
 assert(string.find(debug.traceback(), "^stack traceback:\n"))
 
 do  -- C-function names in traceback
@@ -829,7 +829,7 @@ end
 
 co = coroutine.create(function (x) f(x) end)
 a, b = coroutine.resume(co, 3)
-t = {"'coroutine.yield'", "'f'", "in function <"}
+t = {"'yield'", "'f'", "in function <"}
 while coroutine.status(co) == "suspended" do
   checktraceback(co, t)
   a, b = coroutine.resume(co)