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Using gcov on kernels compiled with GCC 15 results in truncated 16-byte long .gcda files with no usable data. To fix this, update GCOV_COUNTERS to match the value defined by GCC 15. Tested with GCC 14.3.0 and GCC 15.2.0. Link: https://lkml.kernel.org/r/20251028115125.1319410-1-oberpar@linux.ibm.com Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Reported-by: Matthieu Baerts <matttbe@kernel.org> Closes: https://github.com/linux-test-project/lcov/issues/445 Tested-by: Matthieu Baerts <matttbe@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>