X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/4e26c69eb6bfb356d1654ca9cba0435413451a42..ae952af2272fd49967349ca7280fec8c3937fb0f:/ChangeLog

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+2006-03-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/glr-regression.at (Leaked semantic values when reporting
+	ambiguity): Remove unnecessary union and type declarations.
+	(Leaked lookahead after nondeterministic parse syntax error): New test
+	case.
+	* data/glr.c (yyparse): Check for zero stacks remaining before
+	attempting to shift the lookahead so that you don't lose it.
+
+2006-03-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Avoid memory leaks by not invoking longjmp in yyreportAmbiguity.
+	* tests/glr-regression.at (Leaked semantic values when reporting
+	ambiguity): New test case.
+	* data/glr.c (yyreportAmbiguity): Invoke yyyerror directly and return
+	yyabort rather than invoking yyFail, which invokes longjmp.  Remove the
+	now unnecessary yystackp parameter.
+	(yyresolveValue): Return yyreportAmbiguity's result.  Now the necessary
+	destructors can be called.
+
+	* tests/glr-regression.at: Don't invoke bison with `-t' unnecessarily
+	in existing testcases.
+
+2006-03-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't leak semantic values for parent RHS when a user action cuts the
+	parser, and clean up related code a bit.
+	* tests/glr-regression.at (Leaked merged semantic value if user action
+	cuts parse): Rename to...
+	(Leaked semantic values if user action cuts parse): ... this.  Add check
+	for leaked parent RHS values.
+	* data/glr.c (yydestroyGLRState): In debugging output, distinguish
+	between an unresolved state (non-empty chain of semantic options) and
+	an incomplete one (signaled by an empty chain).
+	(yyresolveStates): Document the interface.  Move all manipulation of a
+	successfully or unsuccessfully resolved yyGLRState to...
+	(yyresolveValue): ... here so that yyresolveValue always leaves a
+	yyGLRState with consistent data and thus is easier to understand.
+	Remove the yyvalp and yylocp parameters since they are always just
+	taken from the yys parameter.  When reporting a discarded merged value
+	in debugging output, note that it is incompletely merged.  Document the
+	interface.
+	(yyresolveAction): If resolving any of the RHS states fails, destroy
+	them all rather than leaking them.  Thus, as long as user actions are
+	written to clean up the RHS correctly, yyresolveAction always cleans up
+	the RHS of a semantic option.  Document the interface.
+
+2006-02-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyexpandGLRStack): Catch an off-by-one error that
+	led to a segmentation fault in GNU Pascal.  Problem reported
+	by Waldek Hebisch.
+
+2006-02-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo (Mid-Rule Actions): Explain how to bury a
+	mid-rule action inside a nonterminal symbol in order to declare a
+	destructor for its semantic value.
+
+2006-02-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c [(! defined yyoverflow || YYERROR_VERBOSE) && !
+	YYSTACK_USE_ALLOCA && ! defined YYSTACK_ALLOC && defined
+	__cplusplus && ! defined _STDLIB_H && !
+	((defined YYMALLOC || defined malloc) && (defined YYFREE ||
+	defined free))]: Include <stdlib.h> rather than rolling our own
+	declarations of malloc and free, to avoid problems with
+	incompatible declarations (using 'throw') C++'s stdlib.h.  This
+	should fix Debian bug 340012
+	<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=340012>,
+	reported by Guillaume Melquiond.
+
+2006-02-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Clarify symbols versus types in unused-value warnings.
+
+	* configure.ac (AC_INIT): Bump version number.
+
 2006-02-13  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* NEWS: Version 2.1a.