[Bug lto/54598] ICE: Segmentation fault in lto1 at tree-streamer-in.c:unpack_ts_fixed_cst_value_fields()

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54598

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-09-17
                 CC|                            |rguenth at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-09-17 
12:23:56 UTC ---
Confirmed.  Fix:

Index: gcc/tree-streamer-in.c
===================================================================
--- gcc/tree-streamer-in.c      (revision 191376)
+++ gcc/tree-streamer-in.c      (working copy)
@@ -172,12 +172,11 @@ unpack_ts_real_cst_value_fields (struct
 static void
 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 {
-  struct fixed_value fv;
-
-  fv.mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
-  fv.data.low = bp_unpack_var_len_int (bp);
-  fv.data.high = bp_unpack_var_len_int (bp);
-  TREE_FIXED_CST (expr) = fv;
+  FIXED_VALUE_TYPE *fp = ggc_alloc_fixed_value ();
+  fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
+  fp->data.low = bp_unpack_var_len_int (bp);
+  fp->data.high = bp_unpack_var_len_int (bp);
+  TREE_FIXED_CST_PTR (expr) = fp;
 }



please test it, patch pre-approved if it works (it works for the testcase
with a cross).