// Open the ELF file.
// Returns 0 on success, kSystemError (guaranteed to be -1) (and sets errno)
// on IO error, kInvalidElfFile (and sets errno to EINVAL) for an invalid
- // Elf file. On error, if msg is not NULL, sets *msg to a static string
+ // Elf file. On error, if msg is not nullptr, sets *msg to a static string
// indicating what failed.
enum {
kSuccess = 0,