X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/b50d2359d7608270561abd5c3cbf6e84834c2019..302c0aeeba0264be6031b48540ae4f2108a3d799:/src/scan-gram.l

diff --git a/src/scan-gram.l b/src/scan-gram.l
index 1b44f513..3c7d37c4 100644
--- a/src/scan-gram.l
+++ b/src/scan-gram.l
@@ -24,6 +24,11 @@
 %option prefix="gram_" outfile="lex.yy.c"
 
 %{
+/* Work around a bug in flex 2.5.31.  See Debian bug 333231
+   <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>.  */
+#undef gram_wrap
+#define gram_wrap() 1
+
 #include "system.h"
 
 #include <mbswidth.h>
@@ -613,6 +618,15 @@ splice	 (\\[ \f\t\v]*\n)*
   "$"("<"{tag}">")?(-?[0-9]+|"$")  handle_dollar (token_type, yytext, *loc);
   "@"(-?[0-9]+|"$")		   handle_at (token_type, yytext, *loc);
 
+  "$"  {
+    warn_at (*loc, _("stray `$'"));
+    obstack_sgrow (&obstack_for_string, "$][");
+  }
+  "@"  {
+    warn_at (*loc, _("stray `@'"));
+    obstack_sgrow (&obstack_for_string, "@@");
+  }
+
   <<EOF>>  unexpected_eof (code_start, "}"); BEGIN INITIAL;
 }