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-rw-r--r--src/lib/netlist/plib/pfunction.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/netlist/plib/pfunction.cpp b/src/lib/netlist/plib/pfunction.cpp
index cf43ddc0dde..f05a92ad339 100644
--- a/src/lib/netlist/plib/pfunction.cpp
+++ b/src/lib/netlist/plib/pfunction.cpp
@@ -211,7 +211,7 @@ namespace plib {
}
else if (p == 0) // Function or variable
{
- if (sexpr[i+1] == "(")
+ if ((i+1<sexpr.size()) && sexpr[i+1] == "(")
opstk.push(s);
else
postfix.push_back(s);