SYCL Unittests build fail in SYCL Nightly

[uditagarwal97]

Describe the bug

Run: https://github.com/intel/llvm/actions/runs/9026632746/job/24804245927

tools/sycl/unittests/assert/CMakeFiles/AssertTests.dir/assert.cpp.o.d -o tools/sycl/unittests/assert/CMakeFiles/AssertTests.dir/assert.cpp.o -c /__w/llvm/llvm/src/sycl/unittests/assert/assert.cpp
In file included from /__w/llvm/llvm/src/sycl/unittests/assert/assert.cpp:31:
In member function 'void sycl::_V1::unittest::PiProperty::updateNativeType()',
    inlined from 'sycl::_V1::unittest::PiProperty::PiProperty(const std::string&, std::vector<char>, uint32_t)' at /__w/llvm/llvm/src/sycl/unittests/helpers/PiImage.hpp:33:21,
    inlined from 'void sycl::_V1::unittest::setKernelUsesAssert(const std::vector<std::__cxx11::basic_string<char> >&, PiPropertySet&)' at /__w/llvm/llvm/src/sycl/unittests/helpers/PiImage.hpp:395:20:
/__w/llvm/llvm/src/sycl/unittests/helpers/PiImage.hpp:57:28: error: array subscript 'uint32_t {aka unsigned int}[0]' is partly outside array bounds of 'char [2]' [-Werror=array-bounds]
   57 |                            *((uint32_t *)MData.data())};
      |                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/12/bits/c++allocator.h:33,
                 from /usr/include/c++/12/bits/allocator.h:46,
                 from /usr/include/c++/12/string:41,
                 from /usr/include/c++/12/bits/locale_classes.h:40,
                 from /usr/include/c++/12/bits/ios_base.h:41,
                 from /usr/include/c++/12/ios:42,
                 from /usr/include/c++/12/ostream:38,
                 from /__w/llvm/llvm/build/include/sycl/backend_types.hpp:13,
                 from /__w/llvm/llvm/build/include/sycl/backend/opencl.hpp:11,
                 from /__w/llvm/llvm/src/sycl/unittests/assert/assert.cpp:24:
In member function '_Tp* std::__new_allocator<_Tp>::allocate(size_type, const void*) [with _Tp = char]',
    inlined from 'static _Tp* std::allocator_traits<std::allocator<_CharT> >::allocate(allocator_type&, size_type) [with _Tp = char]' at /usr/include/c++/12/bits/alloc_traits.h:464:28,
    inlined from 'std::_Vector_base<_Tp, _Alloc>::pointer std::_Vector_base<_Tp, _Alloc>::_M_allocate(std::size_t) [with _Tp = char; _Alloc = std::allocator<char>]' at /usr/include/c++/12/bits/stl_vector.h:378:33,
    inlined from 'void std::vector<_Tp, _Alloc>::_M_range_initialize(_ForwardIterator, _ForwardIterator, std::forward_iterator_tag) [with _ForwardIterator = const char*; _Tp = char; _Alloc = std::allocator<char>]' at /usr/include/c++/12/bits/stl_vector.h:1687:25,
    inlined from 'std::vector<_Tp, _Alloc>::vector(std::initializer_list<_Tp>, const allocator_type&) [with _Tp = char; _Alloc = std::allocator<char>]' at /usr/include/c++/12/bits/stl_vector.h:677:21,
    inlined from 'void sycl::_V1::unittest::setKernelUsesAssert(const std::vector<std::__cxx11::basic_string<char> >&, PiPropertySet&)' at /__w/llvm/llvm/src/sycl/unittests/helpers/PiImage.hpp:395:20:
/usr/include/c++/12/bits/new_allocator.h:137:55: note: object of size 2 allocated by 'operator new'
  137 |         return static_cast<_Tp*>(_GLIBCXX_OPERATOR_NEW(__n * sizeof(_Tp)));

To reproduce

DPC++ commit: 1a60087

Environment

No response

Additional context

No response

[uditagarwal97]

@aelovikov-intel For some reason, we see this failure only in SYCL Nightly, not in post or pre commit. Do we have any special configuration for Nightly builds?

[JackAKirk]

From the timing of this failing today, I think it is likely due to #13619
I'm not absolutely 100% though. AMD build/test passes. Probably the uplift to gcc12 is breaking other builds.

[JackAKirk]

From the timing of this failing today, I think it is likely due to #13619 I'm not absolutely 100% though. AMD build/test passes. Probably the uplift to gcc12 is breaking other builds.

Sounds like it is at least partially explained by gcc12 catching bugs that earlier versions didn't: #13738
I'll read more into the failures.