From: Clifford Wolf Date: Wed, 17 May 2017 19:07:54 +0000 (+0200) Subject: Add workaround for CBMC bug to SimpleC back-end X-Git-Tag: yosys-0.8~429 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2122ae69b3c12057d3d4a4f5060bbdba70462d6a;p=yosys.git Add workaround for CBMC bug to SimpleC back-end --- diff --git a/backends/simplec/simplec.cc b/backends/simplec/simplec.cc index 5768e3499..c9656caff 100644 --- a/backends/simplec/simplec.cc +++ b/backends/simplec/simplec.cc @@ -482,7 +482,9 @@ struct SimplecWorker string a_expr = a.wire ? util_get_bit(work->prefix + cid(a.wire->name), a.wire->width, a.offset) : a.data ? "1" : "0"; string b_expr = b.wire ? util_get_bit(work->prefix + cid(b.wire->name), b.wire->width, b.offset) : b.data ? "1" : "0"; string s_expr = s.wire ? util_get_bit(work->prefix + cid(s.wire->name), s.wire->width, s.offset) : s.data ? "1" : "0"; - string expr = stringf("%s ? %s : %s", s_expr.c_str(), b_expr.c_str(), a_expr.c_str()); + + // casts to bool are a workaround for CBMC bug (https://github.com/diffblue/cbmc/issues/933) + string expr = stringf("%s ? (bool)%s : (bool)%s", s_expr.c_str(), b_expr.c_str(), a_expr.c_str()); log_assert(y.wire); funct_declarations.push_back(util_set_bit(work->prefix + cid(y.wire->name), y.wire->width, y.offset, expr) +