ofz#65165 Stack-buffer-overflow READ 4 test case
make VALGRIND=memcheck CppunitTest_tools_test
Conditional jump or move depends on uninitialised value(s)
at 0x13348ADA: BigInt::DivLong(BigInt const&, BigInt&, BigInt*) const (bigint.cxx:306)
by 0x13349A0A: BigInt::operator/=(BigInt const&) (bigint.cxx:635)
by 0x12A58F67: tools::BigIntTest::testLenB1() (test_bigint.cxx:103)
by 0x12A5C6A8: void std::__invoke_impl<void, void (tools::BigIntTest::*&)(), tools::BigIntTest*&>(std::__invoke_memfun_deref, void (tools::BigIntTest::*&)(), tools::BigIntTest*&) (invoke.h:74)
if ( (static_cast<sal_uInt64>(aTmpB.nNum[nLenB1 - 1]) * nQ) >
^ nLenB1 is 0
((nTmp - static_cast<sal_uInt64>(aTmpB.nNum[nLenB1]) * nQ) << 32) + aTmpA.nNum[j - 2])
Since:
commit bcbc0857bf
Date: Sun Dec 17 21:11:31 2023 +0300
Simplify BigInt
Co-authored-by: Mike Kaganski <mike.kaganski@collabora.com>
Change-Id: Id8dbff23f7b4312ba666e1443c41b7869713bfbc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160953
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
b64f23b235