From 4d885a639e4a72665b95fa895032d2600418d390 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Thu, 23 Oct 2014 08:25:55 +0000 Subject: fold-const.c (fold_binary_loc): Preserve side-effects of X - X when simplifying to 0. 2014-10-22 Richard Biener * fold-const.c (fold_binary_loc): Preserve side-effects of X - X when simplifying to 0. * stor-layout.c (finish_bitfield_representative): Strip side-effects of evaluating the difference of two DECL_FIELD_OFFSET. From-SVN: r216575 --- gcc/stor-layout.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'gcc/stor-layout.c') diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index 237cf69..9f0064b 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -1860,6 +1860,8 @@ finish_bitfield_representative (tree repr, tree field) size = size_diffop (DECL_FIELD_OFFSET (field), DECL_FIELD_OFFSET (repr)); + while (TREE_CODE (size) == COMPOUND_EXPR) + size = TREE_OPERAND (size, 1); gcc_assert (tree_fits_uhwi_p (size)); bitsize = (tree_to_uhwi (size) * BITS_PER_UNIT + tree_to_uhwi (DECL_FIELD_BIT_OFFSET (field)) -- cgit v1.1