[Bug c++/22488] [4.1 Regression] ICE: in first_vi_for_offset, at tree-ssa-structalias.c:2585 with -O3

[rguenth at gcc dot gnu dot org]

------- Additional Comments From rguenth at gcc dot gnu dot org  2005-08-29 
12:13 -------
Try

Index: tree-ssa-structalias.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-ssa-structalias.c,v
retrieving revision 2.27
diff -c -3 -p -r2.27 tree-ssa-structalias.c
*** tree-ssa-structalias.c      14 Aug 2005 19:23:56 -0000      2.27
--- tree-ssa-structalias.c      29 Aug 2005 12:12:21 -0000
*************** do_simple_structure_copy (const struct c
*** 2317,2322 ****
--- 2317,2324 ----
        q = get_varinfo (temprhs.var);
        fieldoffset = p->offset - pstart;
        q = first_vi_for_offset (q, q->offset + fieldoffset);
+       if (!q)
+       continue;
        temprhs.var = q->id;
        process_constraint (new_constraint (templhs, temprhs));
      }

to workaround this.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22488