[Bug middle-end/53381] [4.8 Regression] Bootstrap fails building stage1 libgcc

[dave.anglin at bell dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53381

--- Comment #3 from dave.anglin at bell dot net 2012-05-16 23:01:00 UTC ---
On 16-May-12, at 6:30 PM, bernds at gcc dot gnu.org wrote:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53381
>
> --- Comment #2 from Bernd Schmidt <bernds at gcc dot gnu.org>  
> 2012-05-16 22:30:53 UTC ---
> What's it actually trying to access, and failing? Is dest NULL or  
> something?


It's call_set that's NULL.

(gdb) p debug_rtx (insn)
(call_insn 563 562 565 41 (parallel [
             (set (reg:SI 4 %r4)
                 (reg:SI 19 %r19))
             (set (reg:SI 28 %r28)
                 (call (mem:SI (symbol_ref/v:SI ("@memcpy") [flags  
0x241] <function_decl 0x4163e980 memcpy>) [0 S4 A32])
                     (const_int 16 [0x10])))
             (clobber (reg:SI 1 %r1))
             (clobber (reg:SI 2 %r2))
             (use (reg:SI 4 %r4))
             (use (reg:SI 19 %r19))
             (use (const_int 0 [0]))
         ]) ../../../gcc/libgcc/unwind-dw2.c:1028 206  
{call_val_symref_pic}
      (expr_list:REG_RETURNED (reg/v/f:SI 20 %r20 [orig:99 new_rs ]  
[99])
         (expr_list:REG_DEAD (reg:SI 26 %r26)
             (expr_list:REG_DEAD (reg:SI 25 %r25)
                 (expr_list:REG_DEAD (reg:SI 24 %r24)
                     (expr_list:REG_UNUSED (reg:SI 28 %r28)
                         (expr_list:REG_EH_REGION (const_int 0 [0])
                             (nil)))))))
     (expr_list:REG_CC_SETTER (set (reg:SI 28 %r28)
             (reg:SI 26 %r26))
         (expr_list:REG_CC_SETTER (use (reg:SI 24 %r24))
             (expr_list:REG_CC_SETTER (use (reg:SI 25 %r25))
                 (expr_list:REG_CC_SETTER (use (reg:SI 26 %r26))
                     (nil))))))

--
John David Anglin    dave.ang...@bell.net