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-rw-r--r--kernel/rtlil.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index d9003f28c..3e27fdecd 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -597,6 +597,7 @@ void RTLIL::Design::remove(RTLIL::Module *module)
}
log_assert(modules_.at(module->name) == module);
+ log_assert(refcount_modules_ == 0);
modules_.erase(module->name);
delete module;
}