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least one user action succeeds but a later one cuts the parse, then destroy the semantic value before returning rather than leaking it. (yyresolveStates): If a user action cuts the parse and thus yyresolveValue fails, ignore the (unset) semantic value rather than corrupting the yyGLRState, and empty the semantic options list since the user actions should have called all necessary destructors. Simplify code with YYCHK. * tests/glr-regression.at (Corrupted semantic options if user action cuts parse): New test case. (Undesirable destructors if user action cuts parse): New test case. Before applying any of this patch, this test case never actually failed for me... but only because the corrupted semantic options usually masked this bug. (Leaked merged semantic value if user action cuts parse): New test case.
This directory contains the Bison parser generator. See the file INSTALL for generic compilation and installation instructions. See the file doc/FAQ for frequently asked questions. Bison requires GNU m4 1.4.3 or later. See: ftp://ftp.gnu.org/gnu/m4/m4-1.4.3.tar.gz Bison can work with pre-1.4.3 distributions of GNU m4 if they are sufficiently patched, but if you encounter a bug with an older distribution and report a bug we will probably suggest that you upgrade to 1.4.3 as the first step in trying to fix it. Please send bug reports to <bug-bison@gnu.org>. Please include the version number from `bison --version', and a complete, self-contained test case in each bug report. If you have questions about using Bison and the documentation does not answer them, please send mail to <help-bison@gnu.org>. ----- Copyright (C) 1992, 1998, 1999, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. Bison is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. Bison is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with autoconf; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.