* Noteworthy changes in release ?.? (????-??-??) [?]
+** Changes in the format of error messages
+
+ This used to be the format of many error reports:
+
+ foo.y:5.10-24: result type clash on merge function 'merge': <t3> != <t2>
+ foo.y:4.13-27: previous declaration
+
+ It is now:
+
+ foo.y:5.10-25: result type clash on merge function 'merge': <t3> != <t2>
+ foo.y:4.13-27: previous declaration
+
+** Exception safety (lalr1.cc)
+
+ The parse function now catches exceptions, uses the %destructors to
+ release memory (the lookahead symbol and the symbols pushed on the stack)
+ before re-throwing the exception.
+
+ This feature is somewhat experimental. User feedback would be
+ appreciated.
+
+** New %define variable: api.location.type (glr.cc, lalr1.cc, lalr1.java)
+
+ The %define variable api.location.type defines the name of the type to use
+ for locations. When defined, Bison no longer generates the position.hh
+ and location.hh files, nor does the parser will include them: the user is
+ then responsible to define her type.
+
+ This can be used in programs with several parsers to factor their location
+ and position files: let one of them generate them, and the others just use
+ them.
+
+ This feature was actually introduced, but not documented, in Bison 2.5,
+ under the name "location_type" (which is maintained for backward
+ compatibility).
+
+ For consistency, lalr1.java's %define variables location_type and
+ position_type are deprecated in favor of api.location.type and
+ api.position.type.
+
+** Graphviz improvements
+
+ The graphical presentation of the states is more readable: their shape is
+ now rectangular, the state number is clearly displayed, and the items are
+ numbered and left-justified.
+
+ The reductions are now explicitly represented as transitions to other
+ diamond shaped nodes.
+
+* Noteworthy changes in release 2.6.4 (2012-10-23) [stable]
+
+ Bison 2.6.3's --version was incorrect. This release fixes this issue.
+
+* Noteworthy changes in release 2.6.3 (2012-10-22) [stable]
+
** Bug fixes
Bugs and portability issues in the test suite have been fixed.
All the generated headers are self-contained.
-** Changes in the format of error messages
-
- This used to be the format of many error reports:
-
- foo.y:5.10-24: result type clash on merge function 'merge': <t3> != <t2>
- foo.y:4.13-27: previous declaration
-
- It is now:
-
- foo.y:5.10-25: result type clash on merge function 'merge': <t3> != <t2>
- foo.y:4.13-27: previous declaration
-
** Header guards (yacc.c, glr.c, glr.cc)
In order to avoid collisions, the header guards are now
will use YY_CALC_LIB_PARSE_H_INCLUDED as guard.
-** Exception safety (lalr1.cc)
-
- The parse function now catches exceptions, uses the %destructors to
- release memory (the lookahead symbol and the symbols pushed on the stack)
- before re-throwing the exception.
-
- This feature is somewhat experimental. User feedback would be
- appreciated.
-
** Fix compiler warnings in the generated parser (yacc.c, glr.c)
The compilation of pure parsers (%define api.pure) can trigger GCC
"function declared 'noreturn' should not return") have also been
addressed.
-** New %define variable: api.location.type (glr.cc, lalr1.cc, lalr1.java)
-
- The %define variable api.location.type defines the name of the type to use
- for locations. When defined, Bison no longer generates the position.hh
- and location.hh files, nor does the parser will include them: the user is
- then responsible to define her type.
-
- This can be used in programs with several parsers to factor their location
- and position files: let one of them generate them, and the others just use
- them.
-
- This feature was actually introduced, but not documented, in Bison 2.5,
- under the name "location_type" (which is maintained for backward
- compatibility).
-
- For consistency, lalr1.java's %define variables location_type and
- position_type are deprecated in favor of api.location.type and
- api.position.type.
-
* Noteworthy changes in release 2.6.2 (2012-08-03) [stable]
** Bug fixes
* Noteworthy changes in release 2.6 (2012-07-19) [stable]
-** Future changes:
+** Future changes
The next major release of Bison will drop support for the following
deprecated features. Please report disagreements to bug-bison@gnu.org.
projects / bison.git / blobdiff