[Bug target/37395] [4.4 Regression] Bootstrap fails in stage 2 due to segfault compiling c-parser

[nemet at gcc dot gnu dot org]

------- Comment #8 from nemet at gcc dot gnu dot org  2008-09-11 21:46 -------
It's caused by this http://gcc.gnu.org/ml/gcc-patches/2008-08/msg02376.html. 
In this hunk:

@@ -1901,7 +1904,8 @@ noce_try_sign_mask (struct noce_if_info  
      INSN_B which can happen for e.g. conditional stores to memory.  */ 
   b_unconditional = (if_info->insn_b == NULL_RTX 
                     || BLOCK_FOR_INSN (if_info->insn_b) == if_info->test_bb); 
-  if (rtx_cost (t, SET) >= COSTS_N_INSNS (2) 
+  if (rtx_cost (t, SET, optimize_bb_for_speed_p (BLOCK_FOR_INSN
(if_info->insn_b))) 
+      >= COSTS_N_INSNS (2) 
       && (!b_unconditional 
           || t != if_info->b)) 
     return FALSE; 

if_info->insn_b is allowed to be null.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37395