$ cat module.f90 module foo real :: a end module foo program main use foo, only : a a = 42. print *,a end program main $ gfortran -g module.f90 $ gdb ./a.out GNU gdb 6.3-debian Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-linux"...Using host libthread_db library "/lib/tls/libthread_db.so.1".
(gdb) b module.f90:7 Breakpoint 1 at 0x80485e4: file module.f90, line 7. (gdb) r Starting program: /home/ig25/Krempel/Gdb/a.out Breakpoint 1, MAIN__ () at module.f90:7 7 a = 42. Current language: auto; currently fortran (gdb) p a No symbol "a" in current context. (gdb) $ gfortran -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: ../gcc-4.1/configure --prefix=/home/ig25 --enable-languages=c,fortran : (reconfigured) ../gcc-4.1/configure --prefix=/home/ig25 --enable-languages=c,fortran --no-create --no-recursion Thread model: posix gcc version 4.1.0 20051011 (experimental) $ gdb --version GNU gdb 6.3-debian Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-linux". -- Summary: variables from modules not visible in gdb Product: gcc Version: 4.1.0 Status: UNCONFIRMED Keywords: wrong-debug Severity: normal Priority: P2 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: tkoenig at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24526