[Bug fortran/38672] [4.3/4.4 Regression] ICE during build with versions 4.3.2 and 4.4-20081226

[burnus at gcc dot gnu dot org]

------- Comment #3 from burnus at gcc dot gnu dot org  2008-12-30 16:50 -------
Works with 4.2.1 (x86_64-suse-linux). Valgrind shows:

==27337== Invalid read of size 1
==27337==    at 0x4752E2: resolve_symbol (resolve.c:9311)
==27337==    by 0x482726: traverse_ns (symbol.c:3127)
==27337==    by 0x482715: traverse_ns (symbol.c:3124)
==27337==    by 0x482715: traverse_ns (symbol.c:3124)
==27337==    by 0x470A3F: resolve_types (resolve.c:10428)

That seems to be:
  if (sym->ts.type == BT_DERIVED
        && sym->ts.derived->attr.use_assoc
        && sym->ns->proc_name->attr.flavor == FL_MODULE)

The problem is that for sym->name == "pdm_bps":
(gdb) p sym->ts.type
$3 = BT_DERIVED
(gdb) p sym->ts.derived->attr.use_assoc
$4 = 1
(gdb) p sym->ns->proc_name
$5 = (struct gfc_symbol *) 0x0

Thus there is no surprise that sym->ns->proc_name->attr.flavor gives an ICE.

Note:

(gdb) p sym->attr.flavor
$7 = FL_VARIABLE


The line was added as part of the following commit:

r133488 | pault | 2008-03-24 20:11:24 +0100 (Mon, 24. Mar 2008) | 21 lines

2008-03-24  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/34813
        * resolve.c (resolve_structure_cons): It is an error to assign
        NULL to anything other than a pointer or allocatable component.

        PR fortran/33295
        * resolve.c (resolve_symbol): If the symbol is a derived type,
        resolve the derived type.  If the symbol is a derived type
        function, ensure that the derived type is visible in the same
        namespace as the function.


-- 

burnus at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
  GCC build triplet|i686-pc-linux-gnu           |
   GCC host triplet|i686-pc-linux-gnu           |
 GCC target triplet|i686-pc-linux-gnu           |
           Keywords|                            |ice-on-valid-code
           Priority|P3                          |P4
   Last reconfirmed|0000-00-00 00:00:00         |2008-12-30 16:50:22
               date|                            |
            Summary|ICE during build with       |[4.3/4.4 Regression] ICE
                   |versions 4.3.2 and 4.4-     |during build with versions
                   |20081226                    |4.3.2 and 4.4-20081226


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38672