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authorvan Hauser <vh@thc.org>2020-02-24 03:03:53 +0100
committervan Hauser <vh@thc.org>2020-02-24 03:03:53 +0100
commit28b43ab1379c9be9ea80abda160d1582a4cdb348 (patch)
tree0e70f876aa06112735cae5d58aceb0326b1b2044
parentf807d7cefbc3c0e71cac6aad5cc28006f6a253be (diff)
downloadafl++-28b43ab1379c9be9ea80abda160d1582a4cdb348.tar.gz
important InsTrim bugfix!
-rw-r--r--llvm_mode/LLVMInsTrim.so.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm_mode/LLVMInsTrim.so.cc b/llvm_mode/LLVMInsTrim.so.cc
index afe89ec7..390e0697 100644
--- a/llvm_mode/LLVMInsTrim.so.cc
+++ b/llvm_mode/LLVMInsTrim.so.cc
@@ -169,6 +169,7 @@ struct InsTrim : public ModulePass {
 
     ConstantInt *Zero = ConstantInt::get(Int8Ty, 0);
     ConstantInt *One = ConstantInt::get(Int8Ty, 1);
+    ConstantInt *One32 = ConstantInt::get(Int32Ty, 1);
 
     u64 total_rs = 0;
     u64 total_hs = 0;
@@ -512,7 +513,7 @@ struct InsTrim : public ModulePass {
             ->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None));
 
         // Bugfix #3: save the actually location ID to OldPrev
-        Value *Shr = IRB.CreateLShr(L, One);
+        Value *Shr = IRB.CreateLShr(L, One32);
         IRB.CreateStore(Shr, OldPrev)
             ->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None));