Do not attempt to reduce a test case if it is an empty set.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7570 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/Miscompilation.cpp b/tools/bugpoint/Miscompilation.cpp
index b65b4a6..968a34e 100644
--- a/tools/bugpoint/Miscompilation.cpp
+++ b/tools/bugpoint/Miscompilation.cpp
@@ -114,7 +114,7 @@
virtual TestResult doTest(std::vector<Function*> &Prefix,
std::vector<Function*> &Suffix) {
- if (TestFuncs(Suffix, false))
+ if (!Suffix.empty() && TestFuncs(Suffix, false))
return KeepSuffix;
if (!Prefix.empty() && TestFuncs(Prefix, false))
return KeepPrefix;