[fuzzer] Initialize PcDescr buffer before calling __sanitizer_symbolize_pc
__sanitizer_symbolize_pc is not instrumented so msan assumes that PcDescr
was not initialized.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer@318488 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/FuzzerUtil.cpp b/FuzzerUtil.cpp
index 65f0e17..96b37d3 100644
--- a/FuzzerUtil.cpp
+++ b/FuzzerUtil.cpp
@@ -181,7 +181,7 @@
std::string DescribePC(const char *SymbolizedFMT, uintptr_t PC) {
if (!EF->__sanitizer_symbolize_pc) return "<can not symbolize>";
- char PcDescr[1024];
+ char PcDescr[1024] = {};
EF->__sanitizer_symbolize_pc(reinterpret_cast<void*>(PC),
SymbolizedFMT, PcDescr, sizeof(PcDescr));
PcDescr[sizeof(PcDescr) - 1] = 0; // Just in case.