7019165: Incorrect symbols in pstack output after SymbolTable changes

Summary: And out lsb which is set for symbols in constant pool slots to distinguish them from strings
Reviewed-by: phh, dholmes, never, dcubed

src/os/solaris/dtrace/libjvm_db.c

@@ -524,6 +524,8 @@ name_for_methodOop(jvm_agent_t* J, uint64_t methodOopPtr, char * result, size_t
   CHECK_FAIL(err);
   err = read_pointer(J, constantPool + nameIndex * POINTER_SIZE + SIZE_constantPoolOopDesc, &nameSymbol);
   CHECK_FAIL(err);
+  // The symbol is a CPSlot and has lower bit set to indicate metadata
+  nameSymbol &= (~1); // remove metadata lsb
   err = ps_pread(J->P, nameSymbol + OFFSET_Symbol_length, &nameSymbolLength, 2);
   CHECK_FAIL(err);
   nameString = (char*)calloc(nameSymbolLength + 1, 1);
@@ -535,6 +537,7 @@ name_for_methodOop(jvm_agent_t* J, uint64_t methodOopPtr, char * result, size_t
   CHECK_FAIL(err);
   err = read_pointer(J, constantPool + signatureIndex * POINTER_SIZE + SIZE_constantPoolOopDesc, &signatureSymbol);
   CHECK_FAIL(err);
+  signatureSymbol &= (~1);  // remove metadata lsb
   err = ps_pread(J->P, signatureSymbol + OFFSET_Symbol_length, &signatureSymbolLength, 2);
   CHECK_FAIL(err);
   signatureString = (char*)calloc(signatureSymbolLength + 1, 1);