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-rw-r--r--test/libsolidity/SolidityEndToEndTest.cpp15
1 files changed, 15 insertions, 0 deletions
diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp
index 7f865aa1..8d17e56f 100644
--- a/test/libsolidity/SolidityEndToEndTest.cpp
+++ b/test/libsolidity/SolidityEndToEndTest.cpp
@@ -14028,6 +14028,21 @@ BOOST_AUTO_TEST_CASE(test_underscore_in_hex)
ABI_CHECK(callContractFunction("f(bool)", false), encodeArgs(u256(0x1234abcd1234)));
}
+BOOST_AUTO_TEST_CASE(flipping_sign_tests)
+{
+ char const* sourceCode = R"(
+ contract test {
+ function f() public returns (bool){
+ int x = -2**255;
+ assert(-x == x);
+ return true;
+ }
+ }
+ )";
+ compileAndRun(sourceCode);
+ ABI_CHECK(callContractFunction("f()"), encodeArgs(true));
+}
+
BOOST_AUTO_TEST_SUITE_END()
}