[I have already posted this to -beta but since Pete Forman has recently posted a bug report that this fixes I'll make it an offical patch.] This patch changes the maximum number of regex failure points to the values currently found in GNU Emacs. This fixes the "Stack overflow: Stack overflow in regexp matcher" error that can occur then using next-error on large compilation buffers. Malcolm src/ChangeLog addition: 2006-03-21 Malcolm Purvis <malcolmp(a)xemacs.org&gt; * regex.c: Bump INIT_FAILURE_ALLOC and re_max_failures to the current values found in GNU Emacs. xemacs-21.5-micro-patches source patch: Diff command: cvs -q diff -u Files affected: src/regex.c Index: src/regex.c =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/src/regex.c,v retrieving revision 1.56 diff -u -r1.56 regex.c --- src//regex.c 2005/03/09 04:59:31 1.56 +++ src//regex.c 2006/03/21 10:34:45 ＠＠ -1314,7 +1314,7 ＠＠ when matching. If this number is exceeded, we allocate more space, so it is not a hard limit. */ #ifndef INIT_FAILURE_ALLOC -#define INIT_FAILURE_ALLOC 5 +#define INIT_FAILURE_ALLOC 20 #endif /* Roughly the maximum number of failure points on the stack. Would be ＠＠ -1324,9 +1324,9 ＠＠ #if defined (MATCH_MAY_ALLOCATE) /* 4400 was enough to cause a crash on Alpha OSF/1, whose default stack limit is 2mb. */ -int re_max_failures = 20000; +int re_max_failures = 40000; #else -int re_max_failures = 2000; +int re_max_failures = 4000; #endif union fail_stack_elt -- Malcolm Purvis <malcolmp(a)xemacs.org&gt;