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

lib/sh/casemod.c

@@ -106,8 +106,7 @@ sh_modcase (const char *string, char *pat, int flags)
 #if defined (HANDLE_MULTIBYTE)
   wchar_t nwc;
   char mb[MB_LEN_MAX+1];
-  int mlen;
-  size_t m;
+  size_t m, mlen;
   mbstate_t state;
 #endif
 
@@ -249,8 +248,9 @@ singlebyte:
 	  else
 	    {
 	      mlen = wcrtomb (mb, nwc, &state);
-	      if (mlen > 0)
-		mb[mlen] = '\0';
+	      if (MB_INVALIDCH (mlen))
+		strncpy (mb, string + start, mlen = m);			
+	      mb[mlen] = '\0';
 	      /* Don't assume the same width */
 	      strncpy (ret + retind, mb, mlen);
 	      retind += mlen;

lib/sh/zwrite.c

@@ -38,7 +38,9 @@ extern int errno;
 int
 zwrite (int fd, char *buf, size_t nb)
 {
-  int n, i, nt;
+  int nt;
+  size_t n;
+  ssize_t i;
 
   for (n = nb, nt = 0;;)
     {