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-rw-r--r--src/lib/netlist/plib/pfunction.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/lib/netlist/plib/pfunction.cpp b/src/lib/netlist/plib/pfunction.cpp
index 0cf4fc4cdc2..d592a90d670 100644
--- a/src/lib/netlist/plib/pfunction.cpp
+++ b/src/lib/netlist/plib/pfunction.cpp
@@ -150,6 +150,8 @@ namespace plib {
throw pexception(plib::pfmt("pfunction: stack underflow on token <{1}> in <{2}>")(cmd)(expr));
if (stk >= narrow_cast<int>(MAX_STACK))
throw pexception(plib::pfmt("pfunction: stack overflow on token <{1}> in <{2}>")(cmd)(expr));
+ if (rc.cmd() == LP || rc.cmd() == RP)
+ throw pexception(plib::pfmt("pfunction: parenthesis inequality on token <{1}> in <{2}>")(cmd)(expr));
m_precompiled.push_back(rc);
}
if (stk != 1)