[Bug fortran/48462] [4.6/4.7 Regression] realloc on assignment: matmul Segmentation Fault with Allocatable Array

[pault at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48462

Paul Thomas <pault at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> 2011-04-08 04:23:05 UTC ---
This should be easy. The only difference between default (failing) and
-fno-realloc-lhs is a chunk at the beginning of the assignment:

          {
            void * D.1571;

            D.1571 = (void *) a.data;
            if (D.1571 != 0B)
              {
                __builtin_free (D.1571);
              }
          }
          a.data = 0B;
          a.dtype = 538;

which sort of does a job on 'a'.  I say that it is easy because there are not
many sections in trans-xxx that hide behind the -frealloc-lhs condition.

It's obviously mine.

Paul