[Bug 500691] Re: gdb can't refer to a single element in a two dimension array

[Rostislav]

Still reproducible in 14.04
============================
$ gfortran -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.2-19ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --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-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-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 --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 4.8.2 (Ubuntu 4.8.2-19ubuntu1) 

$ gdb -v
GNU gdb (Ubuntu 7.7-0ubuntu3) 7.7
===================================

Same test code written in f90 dialect:

program main
       real,dimension(5,5):: a
         do  i=1,5
           do  j=1,5
           a(i,j)=i+j
           enddo
          enddo
          write(*,*) a(2,3)
end program

Works fine with current GDB.

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https://bugs.launchpad.net/bugs/500691

Title:
  gdb can't refer to a single element in a two dimension array

Status in “gdb” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: gdb

  I write some fortran codes whose file name is 'aa.for' as follow:

             program main
             real,dimension(5,5):: a
             do 12 i=1,5
             do 12 j=1,5
             a(i,j)=i+j
     12    continue
             write(*,*)  a(2,3)
             end 

  Then ,use gdb to debug:

  (gdb) l
  1		program main
  2		real,dimension(5,5):: a
  3		do 12 i=1,5
  4		do 12 j=1,5
  5		a(i,j)=i+j
  6	12    continue
  7		write(*,*) a(2,3)
  8		end
  9	
  (gdb) b  7
  Breakpoint 1 at 0x804864e: file aa.for, line 7.
  (gdb) r
  Starting program: /home/dgt/soft/bad/a 

  Breakpoint 1, main () at aa.for:7
  7		write(*,*) a(2,3)
  Current language:  auto
  The current source language is "auto; currently fortran".
  (gdb) p a(1,2)
  no such vector element
  (gdb) p a(1,1)
  $1 = 2
  (gdb) p a(2,4)
  no such vector element

  indicate that:
  for a two dimension array,gdb can only show the value of the first element.
  Other element ,i.e. a(1,2), gdb can not refer to.

  
  my OS is " ubuntu9.10 " .
  I use     "     gfortran  -g aa.for -o a       "     to generate the executable file a.

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