[Bug c/46822] printf( "%f" ) segv when called from pthread_once

["nicola at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46822

Nicola Pero <nicola at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011.01.17 22:49:07
                 CC|                            |nicola at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #2 from Nicola Pero <nicola at gcc dot gnu.org> 2011-01-17 22:49:07 UTC ---
Isdmter

thanks for your report and the testcase.  The attached testcase works for me
using GCC 4.6.0 (pre-release) --

 gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/gcc/trunk7/libexec/gcc/i686-pc-linux-gnu/4.6.0/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ../trunk7/configure --prefix=/opt/gcc/trunk7
--enable-languages=c,objc,c++,obj-c++ --enable-objc-gc
--with-gmp=/opt/gcc/auxiliary/ --with-mpfr=/opt/gcc/auxiliary/
--with-mpc=/opt/gcc/auxiliary/ --enable-checking=release : (reconfigured)
../trunk7/configure --prefix=/opt/gcc/trunk7 --enable-objc-gc
--with-gmp=/opt/gcc/auxiliary/ --with-mpfr=/opt/gcc/auxiliary/
--with-mpc=/opt/gcc/auxiliary/ --enable-checking=release
--enable-languages=c,c++,lto,objc,obj-c++ --no-create --no-recursion
Thread model: posix
gcc version 4.6.0 20110116 (experimental) (GCC) 

[nicola@lampone ~]$ gcc -Wall -save-temps -o main -pthread -lpthread main.c
[nicola@lampone ~]$ ./main 
0
0.000000
0
0.000000
[nicola@lampone ~]$

I also tried on a x86_64-unknown-linux-gnu AMD machine, similar to yours, and
it works fine there too.

Maybe you could manage to try with GCC 4.6.0 (prerelease) and confirm that
you're still seeing the bug there ?

Thanks