OSV-2020-1456 Segv on unknown address in clang::SourceManager::getFileIDLoaded

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19205 Crash type: Segv on unknown address Crash state: clang::SourceManager::getFileIDLoaded clang::SourceManager::isAtEndOfImmediateMacroExpansion clang::Lexer::isAtEndOfMacroExpansion...

llvm:clang-fuzzer: Segv on unknown address in clang::SourceManager::getFileIDLoaded

Detailed Report: https://oss-fuzz.com/testcase?key=5697366384705536 Project: llvm Fuzzing Engine: libFuzzer Fuzz Target: clang-fuzzer Job Type: libfuzzermsanllvm Platform Id: linux Crash Type: Segv on unknown address Crash Address: Crash State: clang::SourceManager::getFileIDLoaded...