[Bug tree-optimization/86089] [9 Regression] ICE in get_string_length, at tree-ssa-strlen.c:653

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86089

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2018-06-09
                 CC|                            |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I cannot reproduce an ICE with a native Linux compiler or with an
x86_64-apple-darwin17 cross-compiler so there's probably something in the
Darwin headers that triggers it.  Can you please attach a preprocessing
translation unit?

Line 653 has the following code:

   651          /* BUILT_IN_CALLOC always has si->nonzero_chars set.  */
   652          default:
   653            gcc_unreachable ();
   654            break;
   655          }
   656      }
   657  
   658    return si->nonzero_chars;
   659  }