GPU: Silence sanitizer warning

davidrohr · davidrohr · commit 000732b51573 · 2021-04-09T08:45:34.000+02:00
diff --git a/GPU/GPUTracking/DataCompression/GPUTPCCompressionKernels.cxx b/GPU/GPUTracking/DataCompression/GPUTPCCompressionKernels.cxx
@@ -188,7 +188,7 @@ GPUdii() void GPUTPCCompressionKernels::Thread<GPUTPCCompressionKernels::step1un
     const int iRow = iSliceRow % GPUCA_ROW_COUNT;
     const int idOffset = clusters->clusterOffset[iSlice][iRow];
     const int idOffsetOut = clusters->clusterOffset[iSlice][iRow] * compressor.mMaxClusterFactorBase1024 / 1024;
-    const int idOffsetOutMax = clusters->clusterOffset[iSlice][iRow + 1] * compressor.mMaxClusterFactorBase1024 / 1024;
+    const int idOffsetOutMax = ((const unsigned int*)clusters->clusterOffset[iSlice])[iRow + 1] * compressor.mMaxClusterFactorBase1024 / 1024; // Array out of bounds access is ok, since it goes to the correct nClustersTotal
     if (iThread == nThreads - 1) {
       smem.nCount = 0;
     }

Original file line number	Diff line number	Diff line change
`@@ -188,7 +188,7 @@ GPUdii() void GPUTPCCompressionKernels::Thread<GPUTPCCompressionKernels::step1un`
`188`	`188`	`const int iRow = iSliceRow % GPUCA_ROW_COUNT;`
`189`	`189`	`const int idOffset = clusters->clusterOffset[iSlice][iRow];`
`190`	`190`	`const int idOffsetOut = clusters->clusterOffset[iSlice][iRow] * compressor.mMaxClusterFactorBase1024 / 1024;`
`191`		`- const int idOffsetOutMax = clusters->clusterOffset[iSlice][iRow + 1] * compressor.mMaxClusterFactorBase1024 / 1024;`
	`191`	`+ const int idOffsetOutMax = ((const unsigned int)clusters->clusterOffset[iSlice])[iRow + 1] compressor.mMaxClusterFactorBase1024 / 1024; // Array out of bounds access is ok, since it goes to the correct nClustersTotal`
`192`	`192`	`if (iThread == nThreads - 1) {`
`193`	`193`	`smem.nCount = 0;`
`194`	`194`	`}`