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-rw-r--r--frontends/ast/ast.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc
index b601d2e25..06e2e23a8 100644
--- a/frontends/ast/ast.cc
+++ b/frontends/ast/ast.cc
@@ -1286,6 +1286,8 @@ void AST::process(RTLIL::Design *design, AstNode *ast, bool dump_ast1, bool dump
}
else {
// must be global definition
+ if ((*it)->type == AST_PARAMETER)
+ (*it)->type = AST_LOCALPARAM; // cannot be overridden
(*it)->simplify(false, false, false, 1, -1, false, false); //process enum/other declarations
design->verilog_globals.push_back((*it)->clone());
current_scope.clear();