busybox: updated 1.13.0 ash fix

package/busybox/busybox-1.13.0-ash.patch

@@ -1,5 +1,5 @@
 --- busybox-1.13.0/shell/ash.c	Thu Oct 30 08:41:32 2008
-+++ busybox-1.13.0-ash/shell/ash.c	Sat Nov 22 02:31:06 2008
++++ busybox-1.13.0-ash/shell/ash.c	Fri Nov 28 04:39:17 2008
 @@ -536,6 +536,7 @@
  #define NHERE    24
  #define NXHERE   25
@@ -88,3 +88,188 @@
  };
  
  static void calcsize(union node *n);
+@@ -9065,8 +9069,6 @@
+  * This implements the input routines used by the parser.
+  */
+ 
+-#define EOF_NLEFT -99           /* value of parsenleft when EOF pushed back */
+-
+ enum {
+ 	INPUT_PUSH_FILE = 1,
+ 	INPUT_NOFILE_OK = 2,
+@@ -9107,7 +9109,6 @@
+ #endif
+ 	parsenextc = sp->prevstring;
+ 	parsenleft = sp->prevnleft;
+-/*dprintf("*** calling popstring: restoring to '%s'\n", parsenextc);*/
+ 	g_parsefile->strpush = sp->prev;
+ 	if (sp != &(g_parsefile->basestrpush))
+ 		free(sp);
+@@ -9123,7 +9124,7 @@
+ 
+ #if ENABLE_FEATURE_EDITING
+  retry:
+-	if (!iflag || g_parsefile->fd)
++	if (!iflag || g_parsefile->fd != STDIN_FILENO)
+ 		nr = nonblock_safe_read(g_parsefile->fd, buf, BUFSIZ - 1);
+ 	else {
+ #if ENABLE_FEATURE_TAB_COMPLETION
+@@ -9171,55 +9172,76 @@
+  * Refill the input buffer and return the next input character:
+  *
+  * 1) If a string was pushed back on the input, pop it;
+- * 2) If an EOF was pushed back (parsenleft == EOF_NLEFT) or we are reading
++ * 2) If an EOF was pushed back (parsenleft < -BIGNUM) or we are reading
+  *    from a string so we can't refill the buffer, return EOF.
+  * 3) If the is more stuff in this buffer, use it else call read to fill it.
+  * 4) Process input up to the next newline, deleting nul characters.
+  */
++//#define pgetc_debug(...) bb_error_msg(__VA_ARGS__)
++#define pgetc_debug(...) ((void)0)
+ static int
+ preadbuffer(void)
+ {
+ 	char *q;
+ 	int more;
+-	char savec;
+ 
+ 	while (g_parsefile->strpush) {
+ #if ENABLE_ASH_ALIAS
+-		if (parsenleft == -1 && g_parsefile->strpush->ap &&
+-			parsenextc[-1] != ' ' && parsenextc[-1] != '\t') {
++		if (parsenleft == -1 && g_parsefile->strpush->ap
++		 && parsenextc[-1] != ' ' && parsenextc[-1] != '\t'
++		) {
++			pgetc_debug("preadbuffer PEOA");
+ 			return PEOA;
+ 		}
+ #endif
+ 		popstring();
++		/* try "pgetc" now: */
++		pgetc_debug("internal pgetc at %d:%p'%s'", parsenleft, parsenextc, parsenextc);
+ 		if (--parsenleft >= 0)
+ 			return signed_char2int(*parsenextc++);
+ 	}
+-	if (parsenleft == EOF_NLEFT || g_parsefile->buf == NULL)
++	/* on both branches above parsenleft < 0.
++	 * "pgetc" needs refilling.
++	 */
++
++	/* -90 is -BIGNUM. Below we use -99 to mark "EOF on read",
++	 * pungetc() may decrement it a few times. -90 is enough.
++	 */
++	if (parsenleft < -90 || g_parsefile->buf == NULL) {
++		pgetc_debug("preadbuffer PEOF1");
++		/* even in failure keep them in lock step,
++		 * for correct pungetc. */
++		parsenextc++;
+ 		return PEOF;
+-	flush_stdout_stderr();
++	}
+ 
+ 	more = parselleft;
+ 	if (more <= 0) {
++		flush_stdout_stderr();
+  again:
+ 		more = preadfd();
+ 		if (more <= 0) {
+-			parselleft = parsenleft = EOF_NLEFT;
++			parselleft = parsenleft = -99;
++			pgetc_debug("preadbuffer PEOF2");
++			parsenextc++;
+ 			return PEOF;
+ 		}
+ 	}
+ 
++	/* Find out where's the end of line.
++	 * Set parsenleft/parselleft acordingly.
++	 * NUL chars are deleted.
++	 */
+ 	q = parsenextc;
+-
+-	/* delete nul characters */
+ 	for (;;) {
+-		int c;
++		char c;
+ 
+ 		more--;
+-		c = *q;
+ 
+-		if (!c)
++		c = *q;
++		if (c == '\0') {
+ 			memmove(q, q + 1, more);
+-		else {
++		} else {
+ 			q++;
+ 			if (c == '\n') {
+ 				parsenleft = q - parsenextc - 1;
+@@ -9236,22 +9258,23 @@
+ 	}
+ 	parselleft = more;
+ 
+-	savec = *q;
+-	*q = '\0';
+-
+ 	if (vflag) {
++		char save = *q;
++		*q = '\0';
+ 		out2str(parsenextc);
++		*q = save;
+ 	}
+ 
+-	*q = savec;
+-
++	pgetc_debug("preadbuffer at %d:%p'%s'", parsenleft, parsenextc, parsenextc);
+ 	return signed_char2int(*parsenextc++);
+ }
+ 
+ #define pgetc_as_macro() (--parsenleft >= 0 ? signed_char2int(*parsenextc++) : preadbuffer())
++
+ static int
+ pgetc(void)
+ {
++	pgetc_debug("pgetc at %d:%p'%s'", parsenleft, parsenextc, parsenextc);
+ 	return pgetc_as_macro();
+ }
+ 
+@@ -9312,6 +9335,7 @@
+ {
+ 	parsenleft++;
+ 	parsenextc--;
++	pgetc_debug("pushed back to %d:%p'%s'", parsenleft, parsenextc, parsenextc);
+ }
+ 
+ /*
+@@ -9325,16 +9349,17 @@
+ pushstring(char *s, struct alias *ap)
+ {
+ 	struct strpush *sp;
+-	size_t len;
++	int len;
+ 
+ 	len = strlen(s);
+ 	INT_OFF;
+ 	if (g_parsefile->strpush) {
+-		sp = ckzalloc(sizeof(struct strpush));
++		sp = ckzalloc(sizeof(*sp));
+ 		sp->prev = g_parsefile->strpush;
+-		g_parsefile->strpush = sp;
+-	} else
+-		sp = g_parsefile->strpush = &(g_parsefile->basestrpush);
++	} else {
++		sp = &(g_parsefile->basestrpush);
++	}
++	g_parsefile->strpush = sp;
+ 	sp->prevstring = parsenextc;
+ 	sp->prevnleft = parsenleft;
+ #if ENABLE_ASH_ALIAS
+@@ -9424,7 +9449,7 @@
+ 	close_on_exec_on(fd);
+ 	if (push) {
+ 		pushfile();
+-		g_parsefile->buf = 0;
++		g_parsefile->buf = NULL;
+ 	}
+ 	g_parsefile->fd = fd;
+ 	if (g_parsefile->buf == NULL)