Replace assert in addModule with more useful error message

diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 1faf376e7fd67fc1c3822c4afcdd5924b96dd3c8..40079ffc5f88f23a44febdf21767284da08ce618 100644 (file)
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -613,7 +613,8 @@ void RTLIL::Design::add(RTLIL::Module *module)
 
 RTLIL::Module *RTLIL::Design::addModule(RTLIL::IdString name)
 {
-       log_assert(modules_.count(name) == 0);
+       if (modules_.count(name) != 0)
+               log_error("Attempted to add new module named '%s', but a module by that name already exists\n", name.c_str());
        log_assert(refcount_modules_ == 0);
 
        RTLIL::Module *module = new RTLIL::Module;