avoid crash in addLitExpression()

fixes github issue #205

diff --git a/src/compiler/compiler.cpp b/src/compiler/compiler.cpp
index 3382ff4217b123560fcac97489d12fab17ebbe4f..de6909e762b1c7eea2e91603b33e967d7fbb073c 100644 (file)
--- a/src/compiler/compiler.cpp
+++ b/src/compiler/compiler.cpp
@@ -402,7 +402,7 @@ void addLitExpression(NG &ng, unsigned index, const char *expression,
     }
 
     // Ensure that our pattern isn't too long (in characters).
-    if (strlen(expression) > cc.grey.limitPatternLength) {
+    if (expLength > cc.grey.limitPatternLength) {
         throw CompileError("Pattern length exceeds limit.");
     }