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Use volatile instead of benchmark::DoNotOptimize as GCC optimizes awa… #2111

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Use volatile instead of benchmark::DoNotOptimize as GCC optimizes awa…
saicharan-astrome Jul 14, 2026
c9b8604
Fix typo
SaiCharanMarrivada Jul 14, 2026
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4 changes: 2 additions & 2 deletions absl/debugging/stacktrace_benchmark.cc
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Expand Up @@ -44,8 +44,8 @@ ABSL_ATTRIBUTE_NOINLINE void func(benchmark::State& state, int x, int depth) {
// Touch a significant amount of memory so that the stack is likely to be
// not cached in the L1 cache.
state.PauseTiming();
int* arr = new int[kCacheSize];
for (int i = 0; i < kCacheSize; ++i) benchmark::DoNotOptimize(arr[i] = 100);
volatile int* arr = new int[kCacheSize];
for (int i = 0; i < kCacheSize; ++i) arr[i] = 100;
delete[] arr;
state.ResumeTiming();
benchmark::DoNotOptimize(absl::GetStackTrace(pcs, depth, 0));
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