[Bug c++/19148] [4.0 Regression] ICE: gimplification failed

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-12-24 20:26 -------
The front end is generating as the RHS:

  (INDIRECT_REF
   (NOP_EXPR
    (ADDR_EXPR
     (TARGET_EXPR
      (COND_EXPR
       ...)))

which seems reasonable.  The LHS is:

  (INDIRECT_REF
   (SAVE_EXPR
    (POSTINCREMENT_EXPR
     (PARM_DECL))))

which also seems reasonable.

Due to my patch, we now call gimplify_cond_expr on the RHS, with the "target"
parameter non-NULL.  That causes us to call gimplify_expr on the LHS, with
fb_lvalue, which aborts, because the gimplifier doesn't have a good place to put
the post-increment.

Adding a post_p parameter to gimplify_cond_expr fixes the problem (and passing
it down to gimplify_expr) fixes the problem.  

Is there any reason that's not a bad idea?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at redhat dot com, rth
                   |                            |at redhat dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19148