17541409 dtrace support in perl causes segv core dump from perl scripts.
--- tcsh-6.18.01/sh.char.h.orig Thu Apr 17 10:20:22 2014
+++ tcsh-6.18.01/sh.char.h Thu Apr 17 10:20:38 2014
@@ -167,9 +167,9 @@
#define iscmdmeta(c) cmap((c), _CMD)
#ifdef WIDE_STRINGS
#define letter(c) (((c) & QUOTE) ? 0 : \
- (iswalpha((tcshuc) (c)) || (c) == '_'))
+ (iswalpha((c)) || (c) == '_'))
#define alnum(c) (((c) & QUOTE) ? 0 : \
- (iswalnum((tcshuc) (c)) || (c) == '_'))
+ (iswalnum((c)) || (c) == '_'))
#else
#define letter(c) (((Char)(c) & QUOTE) ? 0 : \
((isalpha((tcshuc) (c)) && !(cmap((c), _PUN))) \