[Bug libfortran/49791] New: [4.6 Regression] Formatted namelist reads of arrays don't work

["quantum.analyst at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49791

           Summary: [4.6 Regression] Formatted namelist reads of arrays
                    don't work
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libfortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: quantum.analyst@gmail.com


Created attachment 24797
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24797
Code to reproduce problem

I have some old code that performs a namelist read on a file of formatted form.
There's an array in the namelist. With 4.5.1, reading works just fine, and I
get the following output:

 xpos   0.0000000000000000       0.10000000000000001       0.20000000000000001 
     0.29999999999999999       0.40000000000000002        0.0000000000000000   
    0.0000000000000000        0.0000000000000000        0.0000000000000000     
  0.0000000000000000      ypos  0.50000000000000000       0.59999999999999998  
    0.69999999999999996       0.80000000000000004       0.90000000000000002    
   0.0000000000000000        0.0000000000000000        0.0000000000000000      
 0.0000000000000000        0.0000000000000000     


But with 4.6.0, I get the following error:

At line 15 of file gf-namelist.f (unit = 4, file = 'geometry.in')
Fortran runtime error: Cannot match namelist object name 0.60



gfortran -v for working version:
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.5.1/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla
--enable-bootstrap --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada,lto --enable-plugin
--enable-java-awt=gtk --disable-dssi
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib
--with-ppl --with-cloog --with-tune=generic --with-arch_32=i686
--build=x86_64-redhat-linux
Thread model: posix
gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) 

gfortran -v for non-working version:
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.6.0/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla
--enable-bootstrap --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin
--enable-java-awt=gtk --disable-dssi
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib
--with-ppl --with-cloog --with-tune=generic --with-arch_32=i686
--build=x86_64-redhat-linux
Thread model: posix
gcc version 4.6.0 20110530 (Red Hat 4.6.0-9) (GCC)