Platform: Fedora release 12 (Constantine) Linux cage.lbl.gov 2.6.31.5-127.fc12.x86_64 #1 SMP Sat Nov 7 21:11:14 EST 2009 x86_64 x86_64 x86_64 GNU/Linux g++ (GCC) 4.4.2 20091027 (Red Hat 4.4.2-7) URL: svn://gcc.gnu.org/svn/gcc/trunk Revision: 154886 % g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/net/cci-filer1/vol1/tmp/rwgk/gcc_trunk_154886_fc12_x86_64/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: /net/cage/raid1/rwgk/gcc_trunk/configure --prefix=/net/cci-filer1/vol1/tmp/rwgk/gcc_trunk_154886_fc12_x86_64 --enable-languages=c,c++,fortran --disable-multilib Thread model: posix gcc version 4.5.0 20091201 (experimental) (GCC) g++ -c ~/not_const.cpp /net/cci/rwgk/not_const.cpp:58:13: error: integral expression 'boost::hash_detail::ldexpf_detect::check:: c99' is not constant /net/cci/rwgk/not_const.cpp:58:13: error: trying to instantiate 'template<bool x> struct boost::hash_detail::call_c99_ldexpf' I'll add a self-contained reproducer (60 lines, no includes). Reduced from boost/functional/hash/detail/float_functions.hpp boost svn trunk 58091. It works with g++ 4.4.2 (Fedora 12) and I think many other compilers.
Created attachment 19207 [details] self-contained reproducer (60 lines, no includes)
With a binary search in the svn history I found that the change below lead to the regression. I believe it is a major problem. Could someone confirm it? I think it should be a P1. ------------------------------------------------------------------------ r154768 | dodji | 2009-11-30 01:58:20 -0800 (Mon, 30 Nov 2009) | 9 lines Fix PR c++/42069 gcc/cp/ChangeLog: PR c++/42069 * pt.c (convert_template_argument): Strip typedefs from SCOPE_REFs. gcc/testsuite/ChangeLog: PR c++/42069 * g++.dg/template/typedef23.C: New test. ------------------------------------------------------------------------
Let's CC Dodji...
A shorter reproducer is: struct foo { static const bool b = false; }; template<bool x> struct S1 { }; template<bool x> struct S2 : S1<foo::b> { };
Created attachment 19262 [details] Candidate patch I am testing this patch currently.
Patch submitted to http://gcc.gnu.org/ml/gcc-patches/2009-12/msg00438.html
Subject: Bug 42251 Author: dodji Date: Fri Dec 11 12:25:19 2009 New Revision: 155159 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155159 Log: Fix PR c++/42251 gcc/cp/ChangeLog: PR c++/42251 * pt.c (convert_template_argument): Avoid missing folding of SCOPE_REFs. gcc/testsuite/ChangeLog: PR c++/42251 * g++.dg/template/const3.C: New test. Added: trunk/gcc/testsuite/g++.dg/template/const3.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/pt.c trunk/gcc/testsuite/ChangeLog
Fixed in 4.5
Subject: Bug 42251 Author: hjl Date: Fri Dec 11 23:36:24 2009 New Revision: 155184 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155184 Log: Backport testcases from trunk. 2009-12-11 H.J. Lu <hongjiu.lu@intel.com> Backport from mainline: 2009-12-11 Dodji Seketeli <dodji@redhat.com> PR c++/42225 * g++.dg/template/typedef24.C: New test. * g++.dg/template/typedef25.C: New test. 2009-12-11 Dodji Seketeli <dodji@redhat.com> PR c++/42251 * g++.dg/template/const3.C: New test. 2009-12-10 Jakub Jelinek <jakub@redhat.com> PR c++/42317 * g++.dg/opt/dtor2.C: New test. * g++.dg/opt/dtor2.h: New file. * g++.dg/opt/dtor2-aux.cc: New file. 2009-12-10 Jan Hubicka <jh@suse.cz> PR middle-end/42110 * g++.dg/torture/pr42110.C: new file. 2009-12-07 Jakub Jelinek <jakub@redhat.com> PR debug/42244 * gcc.dg/debug/pr42244.c: New test. 2009-12-04 David Daney <ddaney@caviumnetworks.com> PR rtl-optimization/42164 * gcc.c-torture/compile/pr42164.c: New test. 2009-12-03 Jason Merrill <jason@redhat.com> PR c++/41611 * g++.dg/abi/guard2.C: New. 2009-12-03 Dodji Seketeli <dodji@redhat.com> PR c++/42217 * g++.dg/other/bitfield4.C: New test. 2009-12-03 Jakub Jelinek <jakub@redhat.com> PR c++/42256 * g++.dg/inherit/thunk11.C: New test. * g++.dg/inherit/thunk11.h: New file. * g++.dg/inherit/thunk11-aux.cc: New file. 2009-12-01 Martin Jambor <mjambor@suse.cz> PR tree-optimization/42237 * gcc.c-torture/compile/pr42237.c: New test. 2009-12-01 Paolo Carlini <paolo.carlini@oracle.com> PR c++/42057 * g++.dg/parse/crash54.C: New. 2009-11-30 Martin Jambor <mjambor@suse.cz> PR middle-end/42196 * gcc.c-torture/compile/pr42196-1.c: New test. * gcc.c-torture/compile/pr42196-2.c: New test. * gcc.c-torture/compile/pr42196-3.c: New test. 2009-11-30 Dodji Seketeli <dodji@redhat.com> PR c++/42069 * g++.dg/template/typedef23.C: New test. 2009-11-29 H.J. Lu <hongjiu.lu@intel.com> PR tree-optimization/41961 * g++.dg/tree-ssa/pr41961.C: New. 2009-11-29 Ira Rosen <irar@il.ibm.com> PR tree-optimization/42193 * gcc.dg/vect/pr42193.c: New test. 2009-11-28 Richard Guenther <rguenther@suse.de> PR tree-optimization/42183 * g++.dg/torture/pr42183.C: New testcase. 2009-11-27 Martin Jambor <mjambor@suse.cz> PR middle-end/42006 * gcc.c-torture/execute/pr42006.c: New test. 2009-11-27 Michael Matz <matz@suse.de> PR rtl-optimization/42084 * gcc.dg/pr42084.c: New test. 2009-11-27 Michael Matz <matz@suse.de> PR c++/41906 * g++.dg/tree-ssa/pr41906.C: New testcase. 2009-11-26 Michael Matz <matz@suse.de> PR tree-optimization/41905 * g++.dg/tree-ssa/pr41905.C: New testcase. 2009-11-24 Richard Guenther <rguenther@suse.de> PR tree-optimization/42142 * gcc.c-torture/execute/pr42142.c: New testcase. 2009-11-24 Martin Jambor <mjambor@suse.cz> PR tree-optimization/42154 * gcc.c-torture/execute/pr42154.c: New test. 2009-11-21 Martin Jambor <mjambor@suse.cz> PR middle-end/42025 * gcc.c-torture/compile/pr42025-1.c: New test. * gcc.c-torture/compile/pr42025-2.c: New test. 2009-11-21 Jakub Jelinek <jakub@redhat.com> PR tree-optimization/42078 * gcc.dg/pr42078.c: New test. Added: branches/gcc-4_4-branch/gcc/testsuite/g++.dg/abi/guard2.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/abi/guard2.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/inherit/thunk11-aux.cc - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/inherit/thunk11-aux.cc branches/gcc-4_4-branch/gcc/testsuite/g++.dg/inherit/thunk11.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/inherit/thunk11.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/inherit/thunk11.h - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/inherit/thunk11.h branches/gcc-4_4-branch/gcc/testsuite/g++.dg/opt/dtor2-aux.cc - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/opt/dtor2-aux.cc branches/gcc-4_4-branch/gcc/testsuite/g++.dg/opt/dtor2.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/opt/dtor2.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/opt/dtor2.h - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/opt/dtor2.h branches/gcc-4_4-branch/gcc/testsuite/g++.dg/other/bitfield4.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/other/bitfield4.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/parse/crash54.C - copied unchanged from r155172, trunk/gcc/testsuite/g++.dg/parse/crash54.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/template/const3.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/template/const3.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/template/typedef23.C - copied unchanged from r155181, trunk/gcc/testsuite/g++.dg/template/typedef23.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/template/typedef24.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/template/typedef24.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/template/typedef25.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/template/typedef25.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/torture/pr42110.C - copied unchanged from r155170, trunk/gcc/testsuite/g++.dg/torture/pr42110.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/torture/pr42183.C - copied unchanged from r155181, trunk/gcc/testsuite/g++.dg/torture/pr42183.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/tree-ssa/pr41905.C - copied unchanged from r155182, trunk/gcc/testsuite/g++.dg/tree-ssa/pr41905.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/tree-ssa/pr41906.C - copied unchanged from r155182, trunk/gcc/testsuite/g++.dg/tree-ssa/pr41906.C branches/gcc-4_4-branch/gcc/testsuite/g++.dg/tree-ssa/pr41961.C - copied unchanged from r155181, trunk/gcc/testsuite/g++.dg/tree-ssa/pr41961.C branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42025-1.c - copied unchanged from r155182, trunk/gcc/testsuite/gcc.c-torture/compile/pr42025-1.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42025-2.c - copied unchanged from r155182, trunk/gcc/testsuite/gcc.c-torture/compile/pr42025-2.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42164.c - copied unchanged from r155170, trunk/gcc/testsuite/gcc.c-torture/compile/pr42164.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42196-1.c - copied unchanged from r155181, trunk/gcc/testsuite/gcc.c-torture/compile/pr42196-1.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42196-2.c - copied unchanged from r155181, trunk/gcc/testsuite/gcc.c-torture/compile/pr42196-2.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42196-3.c - copied unchanged from r155181, trunk/gcc/testsuite/gcc.c-torture/compile/pr42196-3.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr42237.c - copied unchanged from r155171, trunk/gcc/testsuite/gcc.c-torture/compile/pr42237.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr42006.c - copied unchanged from r155181, trunk/gcc/testsuite/gcc.c-torture/execute/pr42006.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr42142.c - copied unchanged from r155182, trunk/gcc/testsuite/gcc.c-torture/execute/pr42142.c branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr42154.c - copied unchanged from r155182, trunk/gcc/testsuite/gcc.c-torture/execute/pr42154.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/debug/pr42244.c - copied unchanged from r155170, trunk/gcc/testsuite/gcc.dg/debug/pr42244.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr42078.c - copied unchanged from r155182, trunk/gcc/testsuite/gcc.dg/pr42078.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr42084.c - copied unchanged from r155182, trunk/gcc/testsuite/gcc.dg/pr42084.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/vect/pr42193.c - copied unchanged from r155181, trunk/gcc/testsuite/gcc.dg/vect/pr42193.c Modified: branches/gcc-4_4-branch/gcc/testsuite/ChangeLog