tests: enhance AT_SYNCLINES_COMPILE.

[bison.git] / src / flex-scanner.h

diff --git a/src/flex-scanner.h b/src/flex-scanner.h
index 3e16234c553605ad52e47c05e6e7985ff75589f3..bb4ef72f8a4215a82881093c34f3de2c98be787e 100644 (file)
--- a/src/flex-scanner.h
+++ b/src/flex-scanner.h
@@ -1,12 +1,12 @@
 /* Common parts between scan-code.l, scan-gram.l, and scan-skel.l.
 
 /* Common parts between scan-code.l, scan-gram.l, and scan-skel.l.
 

-   Copyright (C) 2006 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2010 Free Software Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 

-   This program is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by
    it under the terms of the GNU General Public License as published by

-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation, either version 3 of the License, or

    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -15,10 +15,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License

-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301  USA
-*/
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #ifndef FLEX_PREFIX
 # error "FLEX_PREFIX not defined"
 
 #ifndef FLEX_PREFIX
 # error "FLEX_PREFIX not defined"


@@ -50,6 +47,19 @@ int   FLEX_PREFIX (lex_destroy) (void);
 # define yytext  FLEX_PREFIX (text)
 #endif
 
 # define yytext  FLEX_PREFIX (text)
 #endif
 

+/* Non-reentrant scanners generated by Flex 2.5.9 and later (and some earlier
+   versions according to the Flex manual) leak memory if yylex_destroy is not
+   invoked.  However, yylex_destroy is not defined before Flex 2.5.9, so give
+   an implementation here that at least appears to work with Flex 2.5.4.  */
+#if !defined(YY_FLEX_MAJOR_VERSION) || YY_FLEX_MAJOR_VERSION < 2 \
+    || (YY_FLEX_MAJOR_VERSION == 2 \
+        && (!defined(YY_FLEX_MINOR_VERSION) || YY_FLEX_MINOR_VERSION < 5 \
+            || (YY_FLEX_MINOR_VERSION == 5 \
+                && (!defined(YY_FLEX_SUBMINOR_VERSION) \
+                    || YY_FLEX_SUBMINOR_VERSION < 9))))
+# define yylex_destroy() yy_delete_buffer (YY_CURRENT_BUFFER)
+#endif
+

 /* OBSTACK_FOR_STRING -- Used to store all the characters that we need to
    keep (to construct ID, STRINGS etc.).  Use the following macros to
    use it.
 /* OBSTACK_FOR_STRING -- Used to store all the characters that we need to
    keep (to construct ID, STRINGS etc.).  Use the following macros to
    use it.