Fix bug reported by atkins@gweep.net; re.compile(r"[\100-\410]")

   dumps core.  Solution: fix check_escape() to match its comment and
   use only the low 8 bits of the octal number.

diff --git a/Modules/pypcre.c b/Modules/pypcre.c
index 468751d2c81e2f3c43ac8249aaa6a8a255fef44e..afff59c475d205f2f131cc9849f52d5361089114 100644 (file)
--- a/Modules/pypcre.c
+++ b/Modules/pypcre.c
@@ -1064,7 +1064,7 @@ else
     c -= '0';
     while(i++ < 2 && (pcre_ctypes[ptr[1]] & ctype_digit) != 0 &&
       ptr[1] != '8' && ptr[1] != '9')
-        c = c * 8 + *(++ptr) - '0';
+        c = (c * 8 + *(++ptr) - '0') & 255;
     break;
 
     /* Special escapes not starting with a digit are straightforward */