Fix invalid memory access in CScript::operator+=
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ee50c9e487
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2 changed files with 18 additions and 0 deletions
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@ -420,6 +420,7 @@ public:
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CScript& operator+=(const CScript& b)
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{
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reserve(size() + b.size());
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insert(end(), b.begin(), b.end());
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return *this;
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}
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@ -1451,4 +1451,21 @@ BOOST_AUTO_TEST_CASE(script_HasValidOps)
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BOOST_CHECK(!script.HasValidOps());
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}
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BOOST_AUTO_TEST_CASE(script_can_append_self)
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{
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CScript s, d;
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s = ScriptFromHex("00");
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s += s;
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d = ScriptFromHex("0000");
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BOOST_CHECK(s == d);
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// check doubling a script that's large enough to require reallocation
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static const char hex[] = "04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f";
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s = CScript() << ParseHex(hex) << OP_CHECKSIG;
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d = CScript() << ParseHex(hex) << OP_CHECKSIG << ParseHex(hex) << OP_CHECKSIG;
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s += s;
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BOOST_CHECK(s == d);
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}
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BOOST_AUTO_TEST_SUITE_END()
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