Fix compilation error on platforms without 'wint_t' type.

[gnulib.git] / lib / regex.h

diff --git a/lib/regex.h b/lib/regex.h
index b1ae249..e8748e1 100644 (file)
--- a/lib/regex.h
+++ b/lib/regex.h
@@ -37,12 +37,6 @@ extern "C" {
 # define __USE_GNU_REGEX 1
 #endif
 
-#ifdef __VMS
-/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
-   should be there.  */
-# include <stddef.h>
-#endif
-
 #ifdef _REGEX_LARGE_OFFSETS
 
 /* Use types and values that are wide enough to represent signed and
@@ -322,7 +316,14 @@ extern reg_syntax_t re_syntax_options;
 # ifdef RE_DUP_MAX
 #  undef RE_DUP_MAX
 # endif
-/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows.  */
+
+/* RE_DUP_MAX is 2**15 - 1 because an earlier implementation stored
+   the counter as a 2-byte signed integer.  This is no longer true, so
+   RE_DUP_MAX could be increased to (INT_MAX / 10 - 1), or to
+   ((SIZE_MAX - 2) / 10 - 1) if _REGEX_LARGE_OFFSETS is defined.
+   However, there would be a huge performance problem if someone
+   actually used a pattern like a\{214748363\}, so RE_DUP_MAX retains
+   its historical value.  */
 # define RE_DUP_MAX (0x7fff)
 
 #endif /* defined __USE_GNU_REGEX */
@@ -634,9 +635,10 @@ extern int re_exec (const char *);
 #  endif
 # endif
 #endif
-/* gcc 3.1 and up support the [restrict] syntax, but g++ doesn't.  */
+/* gcc 3.1 and up support the [restrict] syntax.  */
 #ifndef __restrict_arr
-# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) && !defined __cplusplus
+# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) \
+     && !defined __GNUG__
 #  define __restrict_arr __restrict
 # else
 #  define __restrict_arr