[Bug c++/43787] [4.5/4.6 Regression] memory copy of empty class (sizeof is one)

["jason at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #15 from jason at gcc dot gnu dot org  2010-05-05 16:32 -------
Subject: Bug 43787

Author: jason
Date: Wed May  5 16:32:20 2010
New Revision: 159072

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159072
Log:
        PR c++/43787
gcc:
        * gimplify.c (gimplify_expr): Keep working if gimplify_modify_expr
        returns GS_OK.
        (gimplify_modify_expr_rhs): Return GS_OK if anything changed.
gcc/cp:
        * cp-gimplify.c (cp_gimplify_expr): Remove copies of empty classes.
        * call.c (build_over_call): Don't try to avoid INIT_EXPR copies here.

Added:
    trunk/gcc/testsuite/g++.dg/opt/empty1.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/cp/cp-gimplify.c
    trunk/gcc/gimplify.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43787