X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/66381412d93f6a54e4d8e7e90b89149a9bca4945..882be728b2481ed2f83805ab8d2cbbab2830f39c:/src/scan-code.l?ds=inline

diff --git a/src/scan-code.l b/src/scan-code.l
index 56cd7825..700488e8 100644
--- a/src/scan-code.l
+++ b/src/scan-code.l
@@ -246,7 +246,20 @@ ref      -?[0-9]+|{id}|"["{id}"]"|"$"
   {splice}  STRING_GROW;
   [\n\r]    STRING_GROW; if (in_cpp) in_cpp = need_semicolon = false;
   [ \t\f]   STRING_GROW;
-  .         STRING_GROW; need_semicolon = true;
+
+  /* YYFAIL is undocumented and was formally deprecated in Bison
+     2.4.2.  */
+  YYFAIL {
+    STRING_GROW; need_semicolon = true;
+    warn_at (*loc, _("use of YYFAIL, which is deprecated and will be"
+                     " removed"));
+  }
+
+  /* The sole purpose of this is to make sure identifiers that merely
+     contain YYFAIL don't produce the above warning.  */
+  [A-Za-z_][0-9A-Za-z_]* STRING_GROW; need_semicolon = true;
+
+  . STRING_GROW; need_semicolon = true;
 }
 
 <SC_SYMBOL_ACTION>