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Fix -Warray-bounds build error in MLAS on clang 17+ #27499

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Merged
tianleiwu merged 3 commits into from
Mar 3, 2026
Merged

Fix -Warray-bounds build error in MLAS on clang 17+ #27499

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f971405
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Copilot Feb 28, 2026
b729453
fix: use __has_warning instead of HAS_ARRAY_BOUNDS to suppress -Warra…
Copilot Feb 28, 2026
2e038f4
fix: use #ifdef __clang__ instead of __has_warning to avoid GCC prepr…
Copilot Feb 28, 2026
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4 changes: 2 additions & 2 deletions onnxruntime/core/mlas/lib/sqnbitgemm_kernel_avx2_int8_blklen32.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1670,12 +1670,12 @@ MlasQ4Int8TileGemmKernelBlkLen32Avx2(
// .../onnxruntime/core/mlas/lib/sqnbitgemm_kernel_avx2_int8_blklen32.h:1531:13: note: array 'acc' declared here
// 1531 | __m256 acc[NCols4];
// | ^
#if defined(__clang__) && defined(HAS_ARRAY_BOUNDS)
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warray-bounds"
#endif
__m128 acc_1 = FoldAccumulators(acc[4], acc[5], acc[6], acc[7]);
#if defined(__clang__) && defined(HAS_ARRAY_BOUNDS)
#ifdef __clang__
#pragma clang diagnostic pop
#endif
if (BiasPtr != nullptr) {
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