[Bug fortran/32962] b = conjg(transpose(a)) is erroneous if b is an allocatable array

[burnus at gcc dot gnu dot org]

------- Comment #7 from burnus at gcc dot gnu dot org  2007-08-02 20:56 -------
  CONJ_EXPR< a.data[0*1+(-2)]>
The offset = -2 is generated in gfc_conv_expr_descriptor:

      offset = gfc_index_zero_node;
      for (n = 0; n < ndim; n++) // ndim = 2
              start = info->start[dim]; //  start = 0;
          tmp = gfc_conv_array_lbound (desc, n); // "tmp = 1"
          // "tmp = 0 - 1 = -1"
          tmp = fold_build2 (MINUS_EXPR, TREE_TYPE (tmp), start, tmp);
          // tmp = tmp * 1 = -1
          tmp = fold_build2 (MULT_EXPR, TREE_TYPE (tmp), tmp, stride);
          // offset = offset + tmp  = offset + (-1)
          offset = fold_build2 (PLUS_EXPR, TREE_TYPE (tmp), offset, tmp);

Still, I don't quite understand how it is supposed to work.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32962