diff options
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index bf81bb0..799ccbe 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -2809,8 +2809,19 @@ gimplify_modify_expr_to_memcpy (tree *expr_p, tree size, bool want_value) static enum gimplify_status gimplify_modify_expr_to_memset (tree *expr_p, tree size, bool want_value) { - tree t, to, to_ptr; + tree t, from, to, to_ptr; + /* Assert our assumptions, to abort instead of producing wrong code + silently if they are not met. Beware that the RHS CONSTRUCTOR might + not be immediately exposed. */ + from = GENERIC_TREE_OPERAND (*expr_p, 1); + if (TREE_CODE (from) == WITH_SIZE_EXPR) + from = TREE_OPERAND (from, 0); + + gcc_assert (TREE_CODE (from) == CONSTRUCTOR + && VEC_empty (constructor_elt, CONSTRUCTOR_ELTS (from))); + + /* Now proceed. */ to = GENERIC_TREE_OPERAND (*expr_p, 0); to_ptr = build_fold_addr_expr (to); |