Fix problems with -Dr during global destruction

[perl5.git] / op_reg_common.h

diff --git a/op_reg_common.h b/op_reg_common.h
index bde38b8..8a45b20 100644 (file)
--- a/op_reg_common.h
+++ b/op_reg_common.h
@@ -2,7 +2,7 @@
  *
  *    Definitions common to by op.h and regexp.h
  *
- *    Copyright (C) 2010 by Larry Wall and others
+ *    Copyright (C) 2010, 2011 by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -36,7 +36,9 @@
 /* The character set for the regex is stored in a field of more than one bit
  * using an enum, for reasons of compactness and to ensure that the options are
  * mutually exclusive */
-/* Make sure to update ext/re/re.pm when changing this! */
+/* Make sure to update ext/re/re.pm and regcomp.sym (as these are used as
+ * offsets for various node types, like SPACE vs SPACEL, etc) when changing
+ * this! */
 typedef enum {
     REGEX_DEPENDS_CHARSET = 0,
     REGEX_LOCALE_CHARSET,
@@ -85,6 +87,10 @@ get_regex_charset(const U32 flags)
  * re->extflags during compilation */
 #define RXf_PMf_COMPILETIME    (RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_CHARSET|RXf_PMf_FOLD|RXf_PMf_EXTENDED|RXf_PMf_KEEPCOPY)
 
+#if RXf_PMf_COMPILETIME > 255
+#  error RXf_PMf_COMPILETIME wont fit in U8 flags field of eval node
+#endif
+
 /* These copies need to be numerical or defsubs_h.PL won't know about them. */
 #define PMf_MULTILINE    1<<0
 #define PMf_SINGLELINE   1<<1