[libFuzzer] make -test_single_input more reliable: make sure the input's size is...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251961 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Fuzzer/FuzzerDriver.cpp b/lib/Fuzzer/FuzzerDriver.cpp
index 821d34cccc2bf906f000118609a8786625093920..363abc482cbba6fad1e019961ee5ef29401db05b 100644 (file)
--- a/lib/Fuzzer/FuzzerDriver.cpp
+++ b/lib/Fuzzer/FuzzerDriver.cpp
@@ -184,7 +184,9 @@ static int RunInMultipleProcesses(const std::vector<std::string> &Args,
 
 int RunOneTest(Fuzzer *F, const char *InputFilePath) {
   Unit U = FileToVector(InputFilePath);
 
 int RunOneTest(Fuzzer *F, const char *InputFilePath) {
   Unit U = FileToVector(InputFilePath);

-  F->ExecuteCallback(U);
+  Unit PreciseSizedU(U);
+  assert(PreciseSizedU.size() == PreciseSizedU.capacity());
+  F->ExecuteCallback(PreciseSizedU);

   return 0;
 }
 
   return 0;
 }