Re: undefining YYRHSLOC in the GLR parser

[Frank Heckenbach]

Paul Eggert wrote:

> Frank Heckenbach <address@hidden> writes:
>
> > [ problem due to undefining YYRHSLOC ]
> >
> > I wrote a test for it (below), though I could test it only manually,
> > because I don't have autom4te installed, so I hope the test suite
> > format is ok.
> 
> Can you please remind me about this after the next official release
> is out?  We can integrate the test then.

So here it is again.

--- tests/glr-regression.at.orig        Wed Jun  4 07:53:44 2003
+++ tests/glr-regression.at     Sun Dec 12 11:11:45 2004
@@ -218,3 +218,49 @@
 
 
 AT_CLEANUP
+
+## --------------------------------------- ##
+## Inability to use YYRHSLOC in a function ##
+## --------------------------------------- ##
+
+AT_SETUP([Inability to use YYRHSLOC in a function])
+
+AT_DATA_GRAMMAR([glr-regr3.y],
+[[/* Regression Test: Inability to use YYRHSLOC in a function  */
+/* Reported by Frank Heckenbach */
+
+%{
+  int yylex (void);
+  void yyerror (char const *);
+
+  typedef struct
+  {
+    int last_line, last_column;
+  } YYLTYPE;
+  #define YYLTYPE_IS_DECLARED
+
+  union yyGLRStackItem;
+
+  static void locations (YYLTYPE *, const union yyGLRStackItem *, int);
+  #define YYLLOC_DEFAULT(DEST, SRC, N) locations (&DEST, SRC, N)
+%}
+
+%glr-parser
+%locations
+
+%%
+exp: 'a';
+%%
+
+static void
+locations (YYLTYPE *dest, const union yyGLRStackItem *src, int n)
+{
+  dest->last_line = YYRHSLOC (src, n).last_line;
+  dest->last_column = YYRHSLOC (src, n).last_column;
+}
+
+]])
+
+AT_CHECK([[bison -o glr-regr3.c glr-regr3.y]], 0, [], [])
+AT_COMPILE([glr-regr3])
+AT_CLEANUP


Frank

-- 
Frank Heckenbach, address@hidden
http://fjf.gnu.de/
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