Add USE_UBSAN cmake option

cmake/ConfigureCompiler.cmake

@@ -4,6 +4,7 @@ set(USE_VALGRIND_FOR_CTEST ${USE_VALGRIND} CACHE BOOL "Use valgrind for ctest")
 set(ALLOC_INSTRUMENTATION OFF CACHE BOOL "Instrument alloc")
 set(WITH_UNDODB OFF CACHE BOOL "Use rr or undodb")
 set(USE_ASAN OFF CACHE BOOL "Compile with address sanitizer")
+set(USE_UBSAN OFF CACHE BOOL "Compile with undefined behavior sanitizer")
 set(FDB_RELEASE OFF CACHE BOOL "This is a building of a final release")
 set(USE_LD "DEFAULT" CACHE STRING "The linker to use for building: can be LD (system default, default choice), BFD, GOLD, or LLD")
 set(USE_LIBCXX OFF CACHE BOOL "Use libc++")
@@ -139,12 +140,21 @@ else()
   if(USE_ASAN)
     add_compile_options(
       -fsanitize=address
-      -DUSE_ASAN)
+      -DUSE_SANITIZER)
     set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -fsanitize=address")
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fsanitize=address")
     set(CMAKE_EXE_LINKER_FLAGS    "${CMAKE_EXE_LINKER_FLAGS}    -fsanitize=address ${CMAKE_THREAD_LIBS_INIT}")
   endif()
 
+  if(USE_UBSAN)
+    add_compile_options(
+      -fsanitize=undefined
+      -DUSE_SANITIZER)
+    set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -fsanitize=undefined")
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fsanitize=undefined")
+    set(CMAKE_EXE_LINKER_FLAGS    "${CMAKE_EXE_LINKER_FLAGS}    -fsanitize=undefined ${CMAKE_THREAD_LIBS_INIT}")
+  endif()
+
   if(PORTABLE_BINARY)
     message(STATUS "Create a more portable binary")
     set(CMAKE_MODULE_LINKER_FLAGS "-static-libstdc++ -static-libgcc ${CMAKE_MODULE_LINKER_FLAGS}")

flow/Platform.cpp

@@ -1391,7 +1391,7 @@ void getLocalTime(const time_t *timep, struct tm *result) {
 }
 
 void setMemoryQuota( size_t limit ) {
-#if defined(USE_ASAN)
+#if defined(USE_SANITIZER)
 	// ASAN doesn't work with memory quotas: https://github.com/google/sanitizers/wiki/AddressSanitizer#ulimit--v
 	return;
 #endif