The following invalid code snippet triggers an ICE on the trunk when compiled with "-Wall": =================================== void foo(int i, ...) { V v; __builtin_va_start(v, i); i = __builtin_va_arg(v, int); } =================================== bug.cc: In function 'void foo(int, ...)': bug.cc:3: error: 'V' was not declared in this scope bug.cc:3: error: expected ';' before 'v' bug.cc:4: error: 'v' was not declared in this scope bug.cc:5: internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in operand_equal_p, at fold-const.c:3055 Please submit a full bug report, [etc.]
Right now (151529) I can't reproduce this problem. In case, please reopen.
The problem still persists (revision 151550 on x86_64-unknown-linux-gnu): bug.cc: In function 'void foo(int, ...)': bug.cc:8:3: error: 'V' was not declared in this scope bug.cc:8:5: error: expected ';' before 'v' bug.cc:9:22: error: 'v' was not declared in this scope bug.cc:10:31: internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in operand_equal_p, at fold-const.c:3111 You probably need to have checking enabled to see the ICE. The ICE only shows with the C++ frontend and not the C frontend.
I didn't have -Wall in the command line, checking was fine. Strange this -Wall thing...
I think I can fix this reasonably quickly...
In fact, with checking disabled no ICE or any other user visible anomalous behavior, I'm not going to spend time on this.
Subject: Bug 40138 Author: jason Date: Wed Feb 3 21:53:41 2010 New Revision: 156483 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=156483 Log: PR c++/40138 * fold-const.c (operand_equal_p): Handle erroneous types. Added: trunk/gcc/testsuite/g++.dg/ext/builtin11.C Modified: trunk/gcc/ChangeLog trunk/gcc/fold-const.c trunk/gcc/testsuite/ChangeLog
Fixed.
Subject: Bug 40138 Author: hjl Date: Sun Feb 7 04:41:22 2010 New Revision: 156562 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=156562 Log: Backport testcases from mainline to 4.4. 2010-02-06 H.J. Lu <hongjiu.lu@intel.com> Backport from mainline: 2010-02-05 Dodji Seketeli <dodji@redhat.com> PR c++/42915 * g++.dg/other/crash-9.C: New test. 2010-02-03 Jason Merrill <jason@redhat.com> PR c++/40138 * g++.dg/ext/builtin11.C: New. 2010-02-03 Richard Guenther <rguenther@suse.de> PR tree-optimization/42944 * gcc.dg/errno-1.c: New testcase. 2010-02-03 Richard Guenther <rguenther@suse.de> PR middle-end/42927 * gcc.c-torture/compile/pr42927.c: New testcase. 2010-01-29 Dodji Seketeli <dodji@redhat.com> PR c++/42758 PR c++/42634 PR c++/42336 PR c++/42797 PR c++/42880 * g++.dg/other/crash-5.C: New test. * g++.dg/other/crash-7.C: New test. * g++.dg/other/crash-8.C: New test. 2010-01-28 Uros Bizjak <ubizjak@gmail.com> PR target/42891 * gcc.target/i386/pr42891.c: New test. 2010-01-28 Richard Guenther <rguenther@suse.de> PR middle-end/42883 * g++.dg/torture/pr42883.C: New testcase. 2010-01-28 Michael Matz <matz@suse.de> * gcc.target/i386/pr42881.c: New test. 2010-01-28 Dodji Seketeli <dodji@redhat.com> PR c++/42713 PR c++/42820 * g++.dg/template/typedef27.C: New test case. * g++.dg/template/typedef28.C: New test case. 2010-01-27 Jakub Jelinek <jakub@redhat.com> PR middle-end/42874 * gcc.dg/vla-22.c: New test. 2010-01-26 Richard Guenther <rguenther@suse.de> PR tree-optimization/42250 * gcc.dg/pr42250.c: New testcase. 2010-01-25 Tobias Burnus <burnus@net-b.de> PR fortran/42858 * gfortran.dg/generic_21.f90: New test. 2010-01-21 Martin Jambor <mjambor@suse.cz> PR tree-optimization/42585 * gcc.dg/tree-ssa/pr42585.c: New test. 2010-01-20 Alexandre Oliva <aoliva@redhat.com> PR debug/42715 * gcc.dg/pr42715.c: New. 2010-01-20 Richard Guenther <rguenther@suse.de> PR tree-optimization/42717 * gcc.c-torture/compile/pr42717.c: New testcase. 2010-01-19 Paul Thomas <pault@gcc.gnu.org> PR fortran/42783 * gfortran.dg/bounds_check_15.f90 : New test. 2010-01-18 Dodji Seketeli <dodji@redhat.com> PR c++/42766 * g++.dg/conversion/op6.C: New test. 2010-01-18 Richard Guenther <rguenther@suse.de> PR tree-optimization/42781 * gfortran.fortran-torture/compile/pr42781.f90: New testcase. 2010-01-17 Richard Guenther <rguenther@suse.de> PR middle-end/42248 * gcc.c-torture/execute/pr42248.c: New testcase. 2010-01-17 Janus Weil <janus@gcc.gnu.org> PR fortran/42677 * gfortran.dg/interface_assignment_5.f90: New test. 2010-01-15 Richard Guenther <rguenther@suse.de> PR middle-end/42739 * g++.dg/torture/pr42739.C: New testcase. 2010-01-14 Jerry DeLisle <jvdelisle@gcc.gnu.org> PR fortran/42684 * gfortran.dg/interface_31.f90: New test. 2010-01-14 Martin Jambor <mjambor@suse.cz> PR tree-optimization/42706 * gcc.dg/ipa/pr42706.c: New testcase. 2010-01-14 Martin Jambor <mjambor@suse.cz> PR tree-optimization/42714 * g++.dg/torture/pr42714.C: New test. 2010-01-14 Alexander Monakov <amonakov@ispras.ru> PR rtl-optimization/42388 * gcc.dg/pr42388.c: New. 2010-01-14 Alexander Monakov <amonakov@ispras.ru> PR rtl-optimization/42294 * gfortran.dg/pr42294.f: New. 2010-01-14 Ira Rosen <irar@il.ibm.com> PR tree-optimization/42709 * gcc.dg/vect/pr42709.c: New test. 2010-01-13 Richard Guenther <rguenther@suse.de> PR tree-optimization/42730 * gcc.c-torture/compile/pr42730.c: New testcase. 2010-01-13 Martin Jambor <mjambor@suse.cz> PR tree-optimization/42704 * g++.dg/torture/pr42704.C: New test. 2010-01-13 Martin Jambor <mjambor@suse.cz> PR tree-optimization/42703 * gcc.c-torture/compile/pr42703.c: New test. 2010-01-13 Richard Guenther <rguenther@suse.de> PR tree-optimization/42705 * gcc.c-torture/compile/pr42705.c: New testcase. 2010-01-13 Richard Guenther <rguenther@suse.de> PR middle-end/42716 * gcc.c-torture/compile/pr42716.c: New testcase. 2010-01-12 Joseph Myers <joseph@codesourcery.com> PR c/42708 * gcc.c-torture/compile/pr42708-1.c: New test. 2010-01-09 Alexandre Oliva <aoliva@redhat.com> PR middle-end/42363 * gcc.dg/torture/pr42363.c: New. 2010-01-09 Alexandre Oliva <aoliva@redhat.com> PR debug/42604 PR debug/42395 * gcc.dg/vect/pr42604.c: New. * gcc.dg/vect/pr42395.c: New. 2010-01-09 Richard Guenther <rguenther@suse.de> PR middle-end/42512 * gcc.c-torture/execute/pr42512.c: New testcase. Added: branches/gcc-4_4-branch/gcc/testsuite/g++.dg/conversion/op6.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/conversion/op6.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/ext/builtin11.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/ext/builtin11.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/other/crash-5.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/other/crash-5.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/other/crash-7.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/other/crash-7.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/other/crash-8.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/other/crash-8.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/other/crash-9.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/other/crash-9.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/template/typedef27.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/template/typedef27.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/template/typedef28.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/template/typedef28.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/torture/pr42704.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/torture/pr42704.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/torture/pr42714.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/torture/pr42714.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/torture/pr42739.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/torture/pr42739.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/torture/pr42883.C - copied unchanged from r156561, trunk/gcc/testsuite/g++.dg/torture/pr42883.C branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42703.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/compile/pr42703.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42705.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/compile/pr42705.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42708-1.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/compile/pr42708-1.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42716.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/compile/pr42716.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42717.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/compile/pr42717.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42730.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/compile/pr42730.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42927.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/compile/pr42927.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr42248.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/execute/pr42248.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr42512.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.c-torture/execute/pr42512.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/errno-1.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/errno-1.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/ipa/pr42706.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/ipa/pr42706.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr42250.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/pr42250.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr42388.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/pr42388.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr42715.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/pr42715.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/torture/pr42363.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/torture/pr42363.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/tree-ssa/pr42585.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/tree-ssa/pr42585.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/vect/pr42395.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/vect/pr42395.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/vect/pr42604.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/vect/pr42604.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/vect/pr42709.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/vect/pr42709.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/vla-22.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.dg/vla-22.c branches/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/pr42881.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.target/i386/pr42881.c branches/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/pr42891.c - copied unchanged from r156561, trunk/gcc/testsuite/gcc.target/i386/pr42891.c branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/bounds_check_15.f90 - copied unchanged from r156561, trunk/gcc/testsuite/gfortran.dg/bounds_check_15.f90 branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/generic_21.f90 - copied unchanged from r156561, trunk/gcc/testsuite/gfortran.dg/generic_21.f90 branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/interface_31.f90 - copied unchanged from r156561, trunk/gcc/testsuite/gfortran.dg/interface_31.f90 branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/interface_assignment_5.f90 - copied unchanged from r156561, trunk/gcc/testsuite/gfortran.dg/interface_assignment_5.f90 branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/pr42294.f - copied unchanged from r156561, trunk/gcc/testsuite/gfortran.dg/pr42294.f branches/gcc-4_4-branch/gcc/testsuite/gfortran.fortran-torture/compile/pr42781.f90 - copied unchanged from r156561, trunk/gcc/testsuite/gfortran.fortran-torture/compile/pr42781.f90 Modified: branches/gcc-4_4-branch/gcc/testsuite/ChangeLog