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-rw-r--r--frontends/verific/verific.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/frontends/verific/verific.cc b/frontends/verific/verific.cc
index 2f5e8cb9a..2c2858514 100644
--- a/frontends/verific/verific.cc
+++ b/frontends/verific/verific.cc
@@ -198,7 +198,7 @@ void VerificImporter::import_attributes(dict<RTLIL::IdString, RTLIL::Const> &att
p = nullptr;
else
for (auto q = p+2; *q != '\0'; q++)
- if (*q != '0' && *q != '1') {
+ if (*q != '0' && *q != '1' && *q != 'x' && *q != 'z') {
p = nullptr;
break;
}