size_t changes for multibyte characters; fix for running debug trap in asynchronous pipeline; remove support for precomputed cache files for cross-compiling; more size_t and ssize_t changes to avoid overflow

builtins/printf.def

@@ -1515,8 +1515,7 @@ asciicode (void)
   register intmax_t ch;
 #if defined (HANDLE_MULTIBYTE)
   wchar_t wc;
-  size_t slen;
-  int mblength;
+  size_t slen, mblength;
 #endif
   DECLARE_MBSTATE;
 
@@ -1524,7 +1523,7 @@ asciicode (void)
   slen = strlen (garglist->word->word+1);
   wc = 0;
   mblength = mbrtowc (&wc, garglist->word->word+1, slen, &state);
-  if (mblength > 0)
+  if (MB_INVALIDCH (mblength) == 0)
     ch = wc;		/* XXX */
   else
 #endif