Re: std::arg() bug : not repetitive ?

[Angelo Graziosi <angelo dot graziosi at alice dot it>]

Dave Korn wrote:
> IIUC this is basically fixed in GCC
> HEAD now and 4.5.0 shouldn't suffer the same problem.

Just for completeness...

With 4.5-20090827 snapshot, it does:

$ g++-4.5 arg_bug.cpp -o0 -o arg_bug

$ ./arg_bug.exe
0.785398
0.785398
1
-3.06287e-17

being (on 1.7):

$ g++-4.5 -v
Using built-in specs.
Target: i686-pc-cygwin
Configured with: /tmp/gcc-4.5-20090827/configure 
--prefix=/usr/local/gfortran --exec-prefix=/usr/local/gfortran 
--sysconfdir=/usr/local/gfortran/etc --libdir=/usr/local/gfortran/lib 
--libexecdir=/usr/local/gfortran/lib 
--mandir=/usr/local/gfortran/share/man 
--infodir=/usr/local/gfortran/share/info --program-suffix=-4.5 
--enable-bootstrap --enable-checking=release --enable-decimal-float=bid 
--enable-languages=c,c++,fortran --enable-libgomp --enable-libssp 
--enable-nls --enable-threads=posix 
--enable-version-specific-runtime-libs --disable-fixed-point 
--disable-libmudflap --disable-shared --disable-sjlj-exceptions 
--disable-win32-registry --with-arch=i686 --with-dwarf2 
--with-system-zlib --with-tune=generic --without-included-gettext 
--without-x
Thread model: posix
gcc version 4.5.0 20090827 (experimental) (GCC)


Cheers,
Angelo.

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