From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1258 invoked by alias); 18 May 2009 13:17:54 -0000 Received: (qmail 1134 invoked by uid 48); 18 May 2009 13:17:39 -0000 Date: Mon, 18 May 2009 13:17:00 -0000 Message-ID: <20090518131739.1133.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug c++/40186] floating point comparision works wrong ( !(a < b) && (b > a) is true ) In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "ich at az2000 dot de" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2009-05/txt/msg01524.txt.bz2 ------- Comment #3 from ich at az2000 dot de 2009-05-18 13:17 ------- Some compiler information: az@acompneu ~/Programmierung $ g++ -Os -v -ggdb test_order.cpp -o test_order && ./test_order Using built-in specs. Target: i686-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.4.0/work/gcc-4.4.0/configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/4.4.0 --includedir=/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/4.4.0 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/4.4.0/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/4.4.0/info --with-gxx-include-dir=/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/include/g++-v4 --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --disable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --enable-cld --enable-java-awt=gtk --with-arch=i686 --enable-languages=c,c++,java,objc,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.4.0' Thread model: posix gcc version 4.4.0 (Gentoo 4.4.0) COLLECT_GCC_OPTIONS='-Os' '-v' '-ggdb' '-o' 'test_order' '-shared-libgcc' '-mtune=generic' '-march=i686' /usr/libexec/gcc/i686-pc-linux-gnu/4.4.0/cc1plus -quiet -v -D_GNU_SOURCE test_order.cpp -quiet -dumpbase test_order.cpp -mtune=generic -march=i686 -auxbase test_order -ggdb -Os -version -o /tmp/cc2REzjQ.s ignoring nonexistent directory "/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../../i686-pc-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/include/g++-v4 /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/include/g++-v4/i686-pc-linux-gnu /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/include/g++-v4/backward /usr/local/include /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/include /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/include-fixed /usr/include End of search list. GNU C++ (Gentoo 4.4.0) version 4.4.0 (i686-pc-linux-gnu) compiled by GNU C version 4.4.0, GMP version 4.2.4, MPFR version 2.4.1-p1. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 13a3af7fd37a02ca6104ed29e33fcca6 COLLECT_GCC_OPTIONS='-Os' '-v' '-ggdb' '-o' 'test_order' '-shared-libgcc' '-mtune=generic' '-march=i686' /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../../i686-pc-linux-gnu/bin/as -V -Qy -o /tmp/cc5XznpU.o /tmp/cc2REzjQ.s GNU assembler version 2.18 (i686-pc-linux-gnu) using BFD version (GNU Binutils) 2.18 COMPILER_PATH=/usr/libexec/gcc/i686-pc-linux-gnu/4.4.0/:/usr/libexec/gcc/i686-pc-linux-gnu/4.4.0/:/usr/libexec/gcc/i686-pc-linux-gnu/:/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/:/usr/lib/gcc/i686-pc-linux-gnu/:/usr/libexec/gcc/i686-pc-linux-gnu/4.4.0/:/usr/libexec/gcc/i686-pc-linux-gnu/:/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/:/usr/lib/gcc/i686-pc-linux-gnu/:/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../../i686-pc-linux-gnu/bin/ LIBRARY_PATH=/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/:/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/:/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../../i686-pc-linux-gnu/lib/:/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-Os' '-v' '-ggdb' '-o' 'test_order' '-shared-libgcc' '-mtune=generic' '-march=i686' /usr/libexec/gcc/i686-pc-linux-gnu/4.4.0/collect2 --eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o test_order /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../crt1.o /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../crti.o /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/crtbegin.o -L/usr/lib/gcc/i686-pc-linux-gnu/4.4.0 -L/usr/lib/gcc/i686-pc-linux-gnu/4.4.0 -L/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../../i686-pc-linux-gnu/lib -L/usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../.. /tmp/cc5XznpU.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/crtend.o /usr/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../crtn.o wrong ordering 2! 993.747, 993.747 d = 990.91854039579629898 v1 = 1600861594,1600861595 v2 = 1600861596,1600861593 8 chars: 3c7f1bcaf90d8f40 d = 990.91854039579629898 v1 = 5f6b359a,5f6b359b v2 = 5f6b359c,5f6b3599 8 chars: 3c7f1bcaf90d8f40 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40186