Ensure Logger is initialized in SVM_ASSERT_IMPL

The assert may fire before a Logger is installed on the Compilation object. Check if the Logger exists before logging. Signed-off-by: Daryl Maier <maier@ca.ibm.com>

Author: 0xdaryl

runtime/compiler/runtime/SymbolValidationManager.hpp

@@ -57,8 +57,15 @@ class AOTCacheWellKnownClassesRecord;
  if (!(nonfatal) && ::TR::SymbolValidationManager::assertionsAreFatal()) \
  ::TR::fatal_assertion(__FILE__, __LINE__, condStr, "" format "", ##__VA_ARGS__); \
  else \
- if (::TR::comp()->log()->isEnabled_DEPRECATED()) \
- ::TR::comp()->log()->printf("" format "\n", ##__VA_ARGS__); \
+ { \
+ /* \
+ * It is possible that this assert will fire before even the default Logger is \
+ * initialized. Check if it is available before logging. \
+ */ \
+ OMR::Logger *log = ::TR::comp()->log(); \
+ if (log && log->isEnabled_DEPRECATED()) \
+ log->printf("" format "\n", ##__VA_ARGS__); \
+ } \
  \
  ::TR::comp()->failCompilation< ::J9::AOTSymbolValidationManagerFailure>( \
  SVM_ASSERT_LOCATION(__LINE__) ": " assertName " failed: " condStr); \