URL:
<http://gna.org/bugs/?22855>
Summary: floating point emulation unit test failing,with g++
4.9
Project: Battle for Wesnoth
Submitted by: involution
Submitted on: Wed 22 Oct 2014 05:42:24 PM UTC
Category: Bug
Severity: 4 - Important
Priority: 5 - Normal
Item Group: Unit Tests
Status: None
Privacy: Public
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 1.13.0-dev
Operating System: Linux Mint 16
_______________________________________________________
Details:
C++ unit tests fail, when I compile with g++ 4.9, with the following message:
$ ./test
Running 143 test cases...
src/tests/floating_point_emulation.cpp(1017): error in
"test_floating_point_emulation": check f == -(1 << 22) failed [
float value_type »i« shift »8« internal value »0« as double »0« as int
»0«.
!= -4194304]
Note that I don't get the problem when I compile with g++ 4.6.
Tested at current master: e9fdef9bd31320f4a9ca475a5c44c00dde8726ae
also at:
ef3f87e7d38ff003bd66915fd5ab99df2e744645
gcc version info:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
4.9.1-3ubuntu2~14.04.1'
--with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.1 (Ubuntu 4.9.1-3ubuntu2~14.04.1)
_______________________________________________________
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<http://gna.org/bugs/?22855>
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