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Merge pull request #22584 from vrabaud:msan

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Move marking memory as initialized earlier.
This commit is contained in:
Alexander Smorkalov 2022-10-03 15:48:38 +03:00 committed by GitHub
commit 572d4f4491
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1 changed files with 5 additions and 1 deletions
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6
modules/core/src/hal_internal.cpp
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@ -244,6 +244,11 @@ lapack_SVD(fptype* a, size_t a_step, fptype *w, fptype* u, size_t u_step, fptype
lwork = (int)round(work1); //optimal buffer size
fptype* buffer = new fptype[lwork + 1];
// Make sure MSAN sees the memory as having been written.
// MSAN does not think it has been written because a different language is called.
// Note: we do this here because if dgesdd is C++, MSAN errors can be reported within it.
CV_ANNOTATE_MEMORY_IS_INITIALIZED(buffer, sizeof(fptype) * (lwork + 1));
if(typeid(fptype) == typeid(float))
OCV_LAPACK_FUNC(sgesdd)(mode, &m, &n, (float*)a, &lda, (float*)w, (float*)u, &ldu, (float*)vt, &ldv, (float*)buffer, &lwork, iworkBuf, info);
else if(typeid(fptype) == typeid(double))
@ -252,7 +257,6 @@ lapack_SVD(fptype* a, size_t a_step, fptype *w, fptype* u, size_t u_step, fptype
// Make sure MSAN sees the memory as having been written.
// MSAN does not think it has been written because a different language was called.
CV_ANNOTATE_MEMORY_IS_INITIALIZED(a, a_step * n);
CV_ANNOTATE_MEMORY_IS_INITIALIZED(buffer, sizeof(fptype) * (lwork + 1));
if (u)
CV_ANNOTATE_MEMORY_IS_INITIALIZED(u, u_step * m);
if (vt)