commit 2569118621228f811d9dbaba447063e97cc3ae76
author Kostya Serebryany <kcc@google.com> Tue Aug 11 00:24:39 2015 +0000
committer Kostya Serebryany <kcc@google.com> Tue Aug 11 00:24:39 2015 +0000
tree c9752330f1bc84270c876587f657435df56b6340
parent 7742b8ba15aa923b8be8347c5a20c4e88f15c5a0

[libFuzzer] don't crash if the condition in a switch has unusual type (e.g. i72)

llvm-svn: 244544

llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp

diff --git a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
index c91b89d..b6829ae 100644
--- a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
+++ b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
@@ -375,6 +375,9 @@
       IRBuilder<> IRB(I);
       SmallVector<Constant *, 16> Initializers;
       Value *Cond = SI->getCondition();
+      if (Cond->getType()->getScalarSizeInBits() >
+          Int64Ty->getScalarSizeInBits())
+        continue;
       Initializers.push_back(ConstantInt::get(Int64Ty, SI->getNumCases()));
       Initializers.push_back(
           ConstantInt::get(Int64Ty, Cond->getType()->getScalarSizeInBits()));