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-rw-r--r--instrumentation/afl-llvm-lto-instrumentation.so.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/instrumentation/afl-llvm-lto-instrumentation.so.cc b/instrumentation/afl-llvm-lto-instrumentation.so.cc
index fe43fbe5..91f0e7e6 100644
--- a/instrumentation/afl-llvm-lto-instrumentation.so.cc
+++ b/instrumentation/afl-llvm-lto-instrumentation.so.cc
@@ -845,6 +845,9 @@ bool AFLLTOPass::runOnModule(Module &M) {
           if (use_threadsafe_counters) {
 
             IRB.CreateAtomicRMW(llvm::AtomicRMWInst::BinOp::Add, MapPtrIdx, One,
+#if LLVM_VERSION_MAJOR >= 13
+                                llvm_MaybeAlign(1),
+#endif
                                 llvm::AtomicOrdering::Monotonic);
 
           } else {