[Script] Introduce constant for maximum CScript length

Backports bitcoin/bitcoin f8e6fb1
lateminer · Oct 8, 2019 · 4bfc161 · 4bfc161
1 parent adfcb46
commit 4bfc161
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
@@ -253,7 +253,7 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript&
     std::vector<bool> vfExec;
     std::vector<valtype> altstack;
     set_error(serror, SCRIPT_ERR_UNKNOWN_ERROR);
-    if (script.size() > 10000)
+    if (script.size() > MAX_SCRIPT_SIZE)
         return set_error(serror, SCRIPT_ERR_SCRIPT_SIZE);
     int nOpCount = 0;
     bool fRequireMinimal = (flags & SCRIPT_VERIFY_MINIMALDATA) != 0;

diff --git a/src/script/script.h b/src/script/script.h
@@ -22,6 +22,9 @@ typedef std::vector<unsigned char> valtype;
 
 static const unsigned int MAX_SCRIPT_ELEMENT_SIZE = 520; // bytes
 
+// Maximum script length in bytes
+static const int MAX_SCRIPT_SIZE = 10000;
+
 // Threshold for nLockTime: below this value it is interpreted as block number,
 // otherwise as UNIX timestamp.
 static const unsigned int LOCKTIME_THRESHOLD = 500000000; // Tue Nov  5 00:53:20 1985 UTC