JBR-3323 Exclude parts of VM code from sanitizer checks

Exclude VM error-reporting code that treats memory as a raw sequence of
bytes from address sanitizer checks. This is needed to only get true
reports when running tests against the --enable-asan build.

(cherry picked from commit 4c2085b)

src/hotspot/share/runtime/os.cpp

@@ -1010,6 +1010,7 @@ static void print_hex_location(outputStream* st, const_address p, int unitsize,
   }
 }
 
+ATTRIBUTE_NO_SANITIZE_ADDRESS("Memory is read raw here without any regard for objects' boundaries")
 void os::print_hex_dump(outputStream* st, const_address start, const_address end, int unitsize,
                         bool print_ascii, int bytes_per_line, const_address logical_start, const_address highlight_address) {
   constexpr int max_bytes_per_line = 64;

src/hotspot/share/utilities/compilerWarnings.hpp

@@ -141,4 +141,10 @@
 #define END_ALLOW_FORBIDDEN_FUNCTIONS           \
   PRAGMA_DIAG_POP
 
+#if defined(__clang__) || defined (__GNUC__)
+# define ATTRIBUTE_NO_SANITIZE_ADDRESS(reason_for_exclusion) __attribute__((no_sanitize_address))
+#else
+# define ATTRIBUTE_NO_SANITIZE_ADDRESS(reason_for_exclusion)
+#endif
+
 #endif // SHARE_UTILITIES_COMPILERWARNINGS_HPP

src/hotspot/share/utilities/vmError.cpp

@@ -607,6 +607,7 @@ void VMError::clear_step_start_time() {
 // could be nested report_and_die() calls on stack (see above). Only one
 // thread can report error, so large buffers are statically allocated in data
 // segment.
+ATTRIBUTE_NO_SANITIZE_ADDRESS("Memory is read raw here without any regard for objects' boundaries")
 void VMError::report(outputStream* st, bool _verbose) {
   // Used by reattempt step logic
   static int continuation = 0;