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From: "sjames at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/112367] wrong rounding of sum of floating-point constants
Date: Fri, 03 Nov 2023 11:21:47 +0000 [thread overview]
Message-ID: <bug-112367-4-dKyWbDEUYd@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-112367-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112367
--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
$ gcc /tmp/foo.c -lm -frounding-math -o /tmp/foo
$ /tmp/foo
x=0x1.e90028p+4
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/aarch64-unknown-linux-gnu/13/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-13.2.1_p20230826/work/gcc-13-20230826/configure
--host=aarch64-unknown-linux-gnu --build=aarch64-unknown-linux-gnu
--prefix=/usr --bindir=/usr/aarch64-unknown-linux-gnu/gcc-bin/13
--includedir=/usr/lib/gcc/aarch64-unknown-linux-gnu/13/include
--datadir=/usr/share/gcc-data/aarch64-unknown-linux-gnu/13
--mandir=/usr/share/gcc-data/aarch64-unknown-linux-gnu/13/man
--infodir=/usr/share/gcc-data/aarch64-unknown-linux-gnu/13/info
--with-gxx-include-dir=/usr/lib/gcc/aarch64-unknown-linux-gnu/13/include/g++-v13
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/aarch64-unknown-linux-gnu/13/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=release
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened
13.2.1_p20230826 p7' --with-gcc-major-version-only --enable-libstdcxx-time
--enable-lto --disable-libstdcxx-pch --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --disable-multilib
--disable-fixed-point --enable-libgomp --disable-libssp --disable-libada
--disable-cet --disable-systemtap --disable-valgrind-annotations
--disable-vtable-verify --disable-libvtv --without-zstd --without-isl
--enable-default-pie --enable-default-ssp --with-build-config=bootstrap-lto
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 13.2.1 20230826 (Gentoo Hardened 13.2.1_p20230826 p7)
next prev parent reply other threads:[~2023-11-03 11:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-03 11:09 [Bug c/112367] New: " zimmerma+gcc at loria dot fr
2023-11-03 11:11 ` [Bug c/112367] " sjames at gcc dot gnu.org
2023-11-03 11:15 ` zimmerma+gcc at loria dot fr
2023-11-03 11:21 ` sjames at gcc dot gnu.org
2023-11-03 11:21 ` sjames at gcc dot gnu.org [this message]
2023-11-03 11:40 ` amonakov at gcc dot gnu.org
2023-11-04 5:48 ` [Bug middle-end/112367] " pinskia at gcc dot gnu.org
2023-11-06 8:59 ` [Bug middle-end/112367] wrong rounding of sum of floating-point constants with -frounding-math zimmerma+gcc at loria dot fr
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