$NetBSD: patch-ec,v 1.1 2005/10/01 19:36:01 recht Exp $

--- Modules/pypcre.c.orig	2003-10-20 16:34:47.000000000 +0200
+++ Modules/pypcre.c	2005-10-01 21:13:56.000000000 +0200
@@ -1163,14 +1163,31 @@
 int min = 0;
 int max = -1;
 
+/* Read the minimum value and do a paranoid check: a negative value indicates
+an integer overflow. */
+
 while ((pcre_ctypes[*p] & ctype_digit) != 0) min = min * 10 + *p++ - '0';
 
+if (min < 0 || min > 65535)
+  {
+  *errorptr = ERR5;
+  return p;
+  }
+
+/* Read the maximum value if there is one, and again do a paranoid on its size
+. Also, max must not be less than min. */
+
 if (*p == '}') max = min; else
   {
   if (*(++p) != '}')
     {
     max = 0;
     while((pcre_ctypes[*p] & ctype_digit) != 0) max = max * 10 + *p++ - '0';
+    if (max < 0 || max > 65535)
+      {
+      *errorptr = ERR5;
+      return p;
+      }
     if (max < min)
       {
       *errorptr = ERR4;
@@ -2267,6 +2284,7 @@
 int bracount = 0;
 int brastack[200];
 int top_backref = 0;
+BOOL capturing;
 unsigned int brastackptr = 0;
 uschar *code;
 const uschar *ptr;
@@ -2446,6 +2464,7 @@
     /* Brackets may be genuine groups or special things */
 
     case '(':
+    capturing = FALSE;
 
     /* Handle special forms of bracket, which all start (? */
 
@@ -2543,10 +2562,15 @@
       continue;                      /* End of this bracket handling */
       }
 
+    /* Ordinary parentheses, not followed by '?', are capturing unless
+    PCRE_NO_AUTO_CAPTURE is set. */
+
+    else capturing = (options & PCRE_NO_AUTO_CAPTURE) == 0;
+    
     /* Extracting brackets must be counted so we can process escapes in a
     Perlish way. */
 
-    else bracount++;
+    if (capturing) bracount++;
 
     /* Non-special forms of bracket. Save length for computing whole length
     at end if there's a repeat that requires duplication of the group. */